Linq select format datetime. Modified 7 years, 4 months ago.

Linq select format datetime OrderBy(a => a. Linq query between dates. how can i do that? Problem with Linq query and date format. Where(r => r. They a lazy executed so at the time the lamda's are used, linq figures out its provider, notices its EF and then asks the EF query provider to translate all the statements into SQL. DateTime is indexed via duplicated field and Convert datetime to a formatted string inside a LINQ-to-entities query. DateTime is basically a number. ToList(); var memberl = from d in data where but for my case, I need to generate a full dynamic query for get the result, and I don't want to convert to list at first, because I have a lot of data in the table, if it to list first then will get all data and the performance will be bad, that why I need to use IQueryable . I've tried the basics of DefaultView and LINQ to LINQ Group By on DateTime [duplicate] Ask Question Asked 7 years, 4 months ago. By the way, I suspect your second Calling ToString("d") on the DateTime will return the date formatted as d/M/yyyy (as would NickLarsen's answer). ProjectID select new {dt. The modification was found here by Paul sql server datetime format: YYYY-MM-DD hh:mm:ss[. Now. Date property is not supported in Linq to Entities (though it may be supported in other implementations of Linq). {:o(c#. NET Core 2. Contacts select new { c. You can do the conversion in memory, but since you're filtering on the parsed value, then you're pulling in ALL records. ParseExact() method from Text property of textboxes (which is string property) and use CompareTo() to compare between them:. Query<Data>(). Date. zyz . Let me break down your single line of code into 2 lines. Date Format in C# Linq. PurchaseOrders. For example, storing a DateTime in a database in a specific TimeZone is terrible idea because it's not the correct time for anyone outside that timezone. SELECT * FROM dbo. ToShortDateString() ie: ((DateTime)detail. It was doing a DateTime. dim db = new databcontext dim user = from u in db. ToShortDateString());. DateTimeValue &gt;= But upper query check date + time value. Convert string to DateTime format issues C#. I'm assuming item. This was asked many times on stackoverflow on how to format the date time in a linq to sql expression, and the solution was always to force a compilation of the linq first using ToList() and then process the datetime using the luxury of the . UNIT_NAME, PACK = objData. net; Share. visit_date, FirstName = m. Looks like you created it manually (or are mapping to existing database), then it's normal to Context. member_Id equals m. LINQ - Group by Year and Month. StartDate < DateTime. You cannot compare a DateTime variable with a String variable. id` . ToDateTime(filter[0]); DateTime dtFechaEnd = Convert. i have n no. Simply create a new date with an empty millisecond component. – The . Date; var duplicate = from a in _db. UpdateDateTime into g select g. I am using:. When i have to filter by date (only year), i use the prperty on the DateTime object like this: var myQuery = from p in logEntryList where p. Follow linq select where between dates. what is concrete did not work? it sample output datetime in format for selected culture, in this case sv-SE, which format you want for datetime output? – Grundy. Extend the partial class by creating CreateDate is declared as a DateTime or DateTime2 in the database; The CreateDate property in your Linqed class is declared as a . LinqToExcel C# Automatically casting CSV values to DATETIME. String was not recognized as a valid Formatting columns should not be solved by a sql statement. I've used ParseExact because we need to make sure that we are parsing to the exact format that MySQL stores the date in, which is yyyy-MM-dd hh:mm. When you create the date for the URL you will need to either use an invariant culture or else set the format to a specific culture. NET code. ToList() returns data in local format. Linq. But when working on non-. AsEnumerable() // Convert Datetimes don’t have a format. ToDateTime(filter[0]). If I insert 01-01-18 15:30 into database and execute command . ToString("dd/MM/yyyy") it returns me a runtime error. ToList(); //Linq-to-entities query to get the fullname, categoryname, and date var query = from c in db. First(); from table in db. EMAIL, USER_NAME = I would avoid turning anything into a string at the database. Status == 1). [TestTable] WHERE CON Skip to main content. Not the view model. Day); What you are really interested in is how to display the DateTime in some UI. SingleOrDefault(); // myDate => ((DateTime?)null) That is probably not what you want, you want some value when it is null, then you should use either the coalesce operator of C# 3. Collections. 119 Linq to EntityFramework DateTime. id") // shorthand for `x => x. AsEnumerable() where DateTime. Value. CPULoad > 90 && X. Entity Framework doesn't know how to execute . Month, MonthName = c. ReportDueDateTime, Create a UDF in SQL Server and then import to your linq to sql project and use in the comparison-- ===== -- Author: -- Create date: -- Description: Convert varchar to date -- SELECT dbo. GetAll() . Select(String. I have a class that wraps a DateTime with a value: (1, 0, 0) into g select new { timestamp = g. Now <= p. 2; SQL Server 2019 (v15) The date column is of type datetime2; However for one of my queries I need the date to be of format yyyy-mm-dd when querying through EF Core. DateCreated }; //Linq-to-objects query (. Instead of. Format("col >= '{0}'", new DateTime(2008, 12 How can I change the LINQ query in the code below to sort by date in descending order (latest first, earliest last)? using System; using System. class Data { public DateTime Date { get; set; } } Query: session. LINQ to Entities does not recognize the method 'System. String ToString In this article, you will learn how to convert DateTime to string (yyyy/mm/dd) format in ViewModel/Whatever class with IQueryable. With the invariant culture the default date format is American, so they do not compare lexicographically with any useful sense. Select(x => string. ITEM_NAME, UNIT_NAME=objData. ReqDate == DateTime. Here's the list of DateTime functions available in LINQ. Format(m. Month. Commented Jan 13, C# Linq with DateTime field. Select(tb => tb. Modified 7 years, 4 months ago. About; How to get Month Name from datetime column in Linq to SQL? 3. myDate }) // Select only the column(s) you'll need . Where(x => I have query below, but when I try to format the field Data_nascimento and Data_exclusao with . table select t. max date in a group by LINQ and VB. 3. but when I get I am getting EffectiveDate with time. Generic; namespace You can add a new date to the criterion, just adding 86399 seconds: DateTime dtFechaIni = Convert. Key, Date = g. Improve this answer. DateTaken. Where(c => c. . you select all the record between this value, but if you need to select only the records that between these two dates correspond to a specific time range, you’ll need Use a standard ISO format datetime like this (for 3rd Nov): "CreatedOn >='2009-11-03 00:00:00' AND CreatedOn <='2009-11-03 23:59:00'" In fact, if you want all records created on 3rd Nov, you should really do this as you also want records created in that last minute e. AddDays(p. Since you are working on string representations, you need to take care of several issues that would otherwise be handled transparently by DateTime, including:. field. EndDate translates into It's the view's job to format the date. CategoryName, c. ToList() //Execute database query . SymNumber == symNumber select a; if a. designer. Count(); There definitely records that Linq - Select Date from DateTime. MaxValue in order to rule them out of the Min consideration (assuming at least one has a specified DOB). Not the model. See more linked questions. select datetimeColumn from mytable I get back 2018-01-01 15:30:00. Select(d => d There is another seldom used format, which is a bit weird but works for all versions: select { d '2013-10-01' } will return the first of october 2013. The applications that access data should format it as needed. ProjectID. CDATE_IUD is a string representation of a date. was to modify the DynamicLINQ library to allow the query to be written as a string and passed to the where clause for Date/Time datatypes. Count())) Share. The key is to create a partial class which extends the generated class, and then implement the OnLoaded partial method. datacontext where u. I want to select Date part from a DateTime value using Linq to Sql or sql lambda. ToString("hh:mm") formatting options. toArray(); @JohnM. I wrote following Linq query to search by type, category, country, subsidary and date . Where(x => x. This is just about getting the data, so it should just stay as it is, without any formatting. ToDateTime(string str) is not working as passed DateTime format is different from your System's format. Logdate. I have a query like this var dates = timetableEvents. My colleague reviewed my code, and corrected my linq-statement to @DainiusKreivys select new { Diff = (DateTime. signUpTime = 5/5/2009 select u. Setting Date format in dropdown list. AdminCalendar where ac. So I tried this code: IQueryable<Alert> alerts = GetAlerts(); IQueryable<Alert> latestAlerts = from a in alerts group a by a. ToDateTime(row["StartOn"]. KTABTOM <= DateTime. var query = (from o in db. Group by r. Field<int>("customerID") == I am trying to get a formatted date string directly from a LINQ-to-Entities query expression. WriteLine(dt. (table. Stack Overflow. You might be able to use a string comparison instead: string today = DateTime. ToString("yyyy-MM-dd")) Use the linq select to map the row to a class of you own definition. At first I thought that sub second precision was not supported by Select but according to Dmitry's answer it is. ColumnAttribute is defined properly on your CreateDate property in your Linqed up class. So When you try to order them by Date by adding a OrderBy(x => x. dtCustomer. But on line 2, you are implicitly converting your string to a DateTime I used the above methodology as you described. Model. CourseCode == course. ModifyDate ?? As John has commented, your LINQ should be throwing an exception, because you first select strings, and then try to filter them as though they are objects. 0; You need to first materialize the query (i. The trick to doing date comparison is to create a DateTime instance that has its time component set to the default value. tblForumAuthors. Select(x => new SelectListItem { Text = The generated LinqToSql code provides extensibility points, so you can set values when the objects are loaded. To use Single to retrieve the only result of the inner LINQ query, try the following code:. linq select where between dates. hasvalue, table. 26. StartDtm < @ToTime AND EndDtm >= @FromTime Share. You need to format the date after execution, LINQ cannot convert ParseExact to SQL because there is no equivalent function – DGibbs. Date >= compareDate); essentially the problem here is entity framework does not know how to convert DateTime. linq; datetime-format. Follow Linq-to-Entities: Format Date in select query expression. but in a final join i am doing an innerjoin on a table that has a log, the log returns more than 50 records, i just want the latest record. In other words, return the date itself and convert it to a string after it executes on SQL side: Where I needed to get date into a string format out of a Nullable<DateTime> in LINQ, so as it was Nullable<DateTime> I did (DateTime)detail. Year == year && c. 2. Name Hi friend, That was just an example. Compare(DateTime. But bear in mind your current locale as that datetime format could means different things based on that. AddMinutes(-5); return _context. DateTime date1 = DateTime. I tried to change it into another format so far I couldn't manage it. ParseExact(o. Blogs. Database technologies are designed to store and retrieve data. var items = listObject. Identifier). ToString(); row["StartOn"] = s; In line 1, you are converting a DateTime object to a string object. i got problem with my LINQ to format date. Date-time var chartData = (from r in _db. IsRunning == true select I've got as far as this: DateTime yesterday = DateTime. string s = Convert. Field<int>("customerID") == You can use DateTime. nnn] Share. MaxValue)); Null DateOfBirth values are set to DateTime. It works without the IEnumerable date filter. Is this problem just something to do with SQL 2005 using different date formats than from SQL 2008? Here's more of the Linq: I am trying to get a formatted date string directly from a LINQ-to-Entities query expression. 000. If you want to avoid this anonymous type here is the simple trick. As you don't show the actual binding code, it is hard to specifically address your situation but lets look at what happens in your query:. Now) . value. In fact, there will be several formats throughout the code. So you need to create a DateTime first: String str1 = "20110101000000"; String str2 = "20110131000000"; String format = "yyyyMMddhhmmss"; DateTime d1 = DateTime. ProductionCycles where p. Item2 }). Article . You can't ever get a null reference exception on a DateTime. CourseCode && a. Where(c=> c. Linq - Select Date from DateTime. dbContext. ToString("yyyy-mm-dd") : "") into a string (outside of a Linq statement) and had no problems at all, so it only causes an in issue inside my Linq. NET conventions public IEnumerable<Content> GetContents(int year, int month) { return db. SelectMany(item => item). 2 DateTime in entity Framework && DateTime in sql format Besides wrapping your dates with #, if date1 is a DateTime and not a string, you need to use the ToString(your date format) to get the correct sql statement. DateTime }). Commented Feb 6, 2017 at 23:18. ID == ID) . Max(t=>t. ToString(format); to the context class and replacing the m. CompanyTaxCode == taxnumber group r by new { r. ClaimDate), Amount = debt. Parse here . Linq query using only year part of datetime. Parse(x, CultureInfo. Select(x => new { x. I'm using the dynamic LINQ library by Scott Guthrie together with Entity Framework and C#. I have a SQL query like this: SELECT date FROM cases WHERE date BETWEEN '11/01/2015' AND '11/15/2015' I want to do the same thing in MVC Controller using Linq. 5 Well, there are three options I can immediately think of: Pull the whole DateTime back, and then extract the month and format it client-side; Use DateTime. Commented Oct 14, 2016 at 15:51. 4. ToString("dd/mm/yyyy") method. manufactured_date Then to extract just the date as a string out of Converted DateTime Value I applied Value. Contents // Or wherever you're getting data from . value }; This is fundamentally flawed, as it groups the TimeSpan itself. DateCreated to a datetime format of ddMMyyyy? tAccounts = tAccounts. PACK, RECIEVED_QTY I I'm new to C# coming from VB and im trying to get this sql-linq query to work. DateTaken contains Time also, then refer these links to modify your date. Key, value = g. [dbo]. Related. Select(f => new List<int>() { f. I don't know enough LINQ to do the conditional filter that way either. GetValueOrDefault(DateTime. FullName, c. I think the value of the based date is 5/5/2009 12:00:00 and that's why I couldn't query it. Format("{0}/{1} (Count: {2})", x. Follow Problems is this, in the database the date format is 5/5/2009 4:30:12 but I want to compare with 5/5/2009. using ToString() in linq expression to convert DateTime value. net; ado. or use the "d" format when calling ToString() more DateTime formats ("d"); Writing a Linq query could look like this: someCollection var q = from n in table group n by n. But if I retrieve all records of the table which contains the column with datetime type like var compareDate = DateTime. Day >= fromDate) . Title; to get all entries after 2013-12-31. select("$. now i want to select records between two dates in the example below between valid dates. member_FirstName, LastName = m. Month, x. C# - DataTable. var DateQuery = db. Easiest would be to first project to an anonymous type within the query and then cast to an IEnumerable by using AsEnumerable() - after that you can use ToString() because you are now using Linq to Objects Linq Select DateTime returns local time. Is it possible to do inside the code? 2- So you need to prepare your datetime variables in the proper format first: Example 1. Date, Subject = Linq-to-Entities: Format Date in select query expression. var xyx = db. HasValue ? p. Nope, you don't have to apply a formatter. You can use either Single, First, or Last to choose a value from this set of values generated by the inner query. Viewed 17k times Date Format in C# Linq. FirstOrDefault() Selecting single element from each group that cointains maximum DateTime value. Month == month); } The problem is that you have to pass the date/time you're looking for to your filter. CashFlowHistory where r. ParseExact(str1, format,null); DateTime d2 = DateTime. EF DateTime formatting. Average(s => s. Stack Overflow You may need to fiddle with the DateTime format, I've assumed "dd/MM/yy HH:mm:ss". datatable select method for datetime on date filter. manufactured_date). The problem is that the LINQ provider is trying to convert DateTime. DateEntity. Parse go in the linq statement, replacing the Due = new DateTime ? – Craig. ordered descending. DateTaken == dt && a. How to get data from yesterday. Month && timeEntry. I've recently run into this problem, LINQ queries can get pretty nasty real quick because of the large amount of You can't use Max, because that will just return the highest datetime (and throw away the rest of the info) similar to how SELECT MAX(datetime) FROM t WHERE UnitId = 123 would. "The field's format is" - No, it's not. In particular, different cultures have different preferred ways of representing times, so you should probably respect that. No. DateFiled >= dateValue && DateFiled <= dateValue. ToString("dd/M/yyyy");. For various reasons, the column must be left as a string data type. Custom date format from Linq to SQL query. ReviewedByEmployee. Created > baselineDate) // pull into memory here, since we won't be making the result set any smaller and // we want to use DateTime. The 'System. This question already has answers here: LINQ: Group by month and year within a datetime field (5 answers) Groupby multiple date properties by month and year in If you want a LINQ like interface in javascript, you could use a library such as linq. net Core. ToString("dd. AsEnumerable() // Do the rest of the processing locally . AddMinutes(-5) to SQL, so you need to get the value and then pass that to entity framework. ToShortDateString, string. members on v. Here is code var resultCustomer = from row in formDg. from(selectedFruits) . Key. Interactions where z. I have a list of date strings in the following format Apr-2016 Aug-2015 Nov-2015 Oct-2015 Sep-2015 July 2016 Code: var sortedMonths = monthList . 0 or one of the overloads of the GetValueOrDefault method from 2- So you need to prepare your datetime variables in the proper format first: Example 1. The OUT parameter here is a DateTime (not nullable). Nullable<DateTime> works the same way. EF string to DateTime conversion. I used the following to get a list of items between two dates: var result = _context. DateCreated to a datetime format of ddMMyyyy? tAccounts = Hi, how do I convert this variable x. g. 0. SomeDateTime. I'm guess this is working because it can do the inital select and order by on the database, and is doing the . ActivityDate <= StartDateTo && z. It's like: bool myBool = Datetime. Where( x=> x. Not the controller/presenter. Parse() which isn't supported in LINQ to Entities. AccountId into g select new {AccountId = g. I have to display date in MMM dd,YYYY format. Now select new { Problem is, when I run the statement above I get: The conversion of a nvarchar data type to a datetime data type resulted in an out-of-range value. First I tried the usual DateTime formatting as toString("newFOrmat") but I got Linq errors mostly because toString() is not recognized in SQL Server. ToString()). ToDateTime(myValue) < DateTime. MM. Parse), it only knows how to translate them to SQL. But all that does for me is to set firstBornDate to a DateTime value. BTW,. format("NULL")) In this case, if the selected field (table. objAdvList = objAdvList . In traditional mssql, I could write query like below. See the documentation on date format strings. Convert DateTime? to string in dd-MM-yyyy. You would need to perform the formatting at the time of the binding. Here is my scenario. ReportDueDateTime), OrderReportID= In your case Convert. ToString("yyyy-mm-dd"); // or I have an ASP. Today; var userQuery = from timeEntry in TimeEntries where timeEntry. VarCharAsDate('11 May 2016 09:00') -- ===== CREATE FUNCTION VarCharAsDate ( -- Add the parameters for the function here @DateAsVarchar NVarchar(100) i got problem with my LINQ to format date. Select Looks like you should be able to do: // Type and property names changed to match . Month to pull just the month back from the database, then format it client-side; Try to get the formatting (conversion to text) to work on the database CreateDate is declared as a DateTime or DateTime2 in the database; The CreateDate property in your Linqed class is declared as a . tb_FileManagement_RegistrosArchivo where var months = bookings . Then I came across this question format date in linq query result and tried the method there as this DateTime dt =course. Another approach is to use Linq to DataSet which allows you to avoid serializing the date/time:. Formatting DateTime I must to retry a nullable Datetime from an Entity Framework and convert it in a Masked string of this type: ToString("dd-MM-yyyy") I retry all the value with this code(now i show the only DataLead) You need to first materialize the query (i. 14 big issue in converting string to datetime using linq-to-entities Convert datetime to a formatted string inside a LINQ-to-entities query. AsEnumerable() where row. What you're looking for is the LINQ equivalent of SELECT TOP 1 * FROM t WHERE UnitID = 123 ORDER BY DateTime DESC . nonBusinessDays = (from ac in db. Given an instance of a DateTime object, you can get a formatted string in that way like this: DateTime date = new DateTime(2011, 2, 19); string formatted = date. DateTime comparison with formatting in LINQ. ToString("MMM dd"). Departments where d. new {res. Formatting DateTime string inside of Linq to SQL: how to query a time range in a DateTime field. Return the query results as a DateTime then convert to a string later not within the LINQ query. Compare just write ktab. I can't understand In Linq to sql, I need to order by a datetime field descending then order by the time part of the same datetime filed ascending, make sense? Here's an example of the result needed: [Serial] [Date (mm-dd-yyyy:hh-MM-ss)] Hi, i try to convert the date format using Linq. var data = (from objData in receiptData select new { ITEM_NAME=objData. ToDateTime into valid sql. Scroll down the documentation to the section "How standard format strings work" to see how it is done. Parse(). DateTime. Tryparse like almost all TryParse returns a Boolean value. Ex: in that field values are saved like 2015-08-27 13:28:50. visits join m in abc. ActivityDate. ToString(), which I have Database table and it has a field call CreatedDate which is DateTime Format. Aggregate then steps through the flattened sequence, comparing each element to the max (so far). NET DateTime; The System. Parse(o. ParseExact(str2, format, null); and the LINQ query: Try like this. Ask Question Asked 15 years, 1 month ago. EDIT: for EF, we have to pull everything into memory before doing any string logic: var orders = _uow. DateEntity (Replicating my comment to paste some sample code) If the date is in string format, couldn’t you apply a ToString on your DateTime (presumably x) and then do a string comparison?. I want to convert a datetime into a string with format "dd/mm/yyyy" inside an entity framework linq query. 1; EF Core 2. The form used in the answer is a shorthand, where member name in the initialization expression is used as a field name of anonymous type. tbl_Project_Status_MSTR where dt. If the current element is greater than the max then that becomes the new max. Linq to EF and Linq to SQL do not support string to date conversions. I realize that you only want to compare the dates, but there is no real problem with comparing the datetimes if the dbas var firstBornDate = People. But this approach is backwards anyway. At that point you could use CompareTo - but it's horrible :(If the format is dd-MMM-yyyy (as it sounds) you could try performing the parse in the LINQ query, still passing in a DateTime but parsing each value in the database: Your inner query results in a set of results. Compare(DropMilliseconds(date1), DropMilliseconds(date2)) For further analysis I copied (p. When the query runs, the startDate is just a date without a time. You only have a IEnumerable with all Grp-Entrys from your csvList. member_LastName }). To find matches you need to pick one of these approaches: 1) Remove the time information from the database values before comparing them to your target 2) Convert your target into a range, then find database values in that range. convert a string to datetime in LinqToEntities (inside the query) 1. StatusDate}) . Month, ordering by year then month then name, select the year and the month separately (along with the count), and then if you need to do the projection to a string format back in the client code. member_id, VisiteDate = v. ToList(). CreatedDate, } into g I' using EF 4, I have a property DateTimeStart in my entities with datein this format 16/08/2012 08:14:40, I would like query with EF and find all the entities within the date 16/08/2012 only. This will normally give the short format of the DateTime. So when the local DateTime of 11 PM on 2017-11-15 is stored, it is stored as 04:00 2017-11-16 due to the Offset between local time, and GMT. ToDate == objAdvList The problem is that the generated filter needed to be altered a little for it to work with LINQ to Entities as opposed to LINQ to Objects. LINQ only select data after current time for today. DateTime is a value type, which means it resides on the stack. Entity Framework Map String to datetime column. cs. TryParse(myString, out myDateTimeNotNullable); You can also use it If you absolutely have to keep it as a string, you should at least use a sortable format, such as yyyy-MM-dd. For this to work you'll also need to understand multi-column grouping. Select(d => d. Item1 Item2 = mdoel. DateTimeColumn2, "dd. AsEnumerable() . Us Try converting the results to a List<> first, and filter the results from the list:. Text, "yyyy/MM/dd hh:mm:ss", CultureInfo. AddSeconds(86399); var getInfo = from gI in infEnt. AsEnumerable(). ToDate and that will safely unpack the value back to a datetime. I tried to use SqlFunctions. ToString("MMMM") }). ToList() returns data with DateTime in UTC format. Field<int>("customerID") == //a list of Nullable<DateTime> with exactly 1 item var listOfDates = new DateTime?[] { null }; var myDate = listOfDates. In my SQL 2008 R2, I have this table: I have create the LINQ syntax to select all hours that greater than computer hour: public IList&lt;LS_CLIENTHORRAIRE&gt; Get_All_Obj(string CLIENT_ID) I use EF and LINQ in my MVC 3 web app. EMAIL, res. I assume you're having a problem because date1 contains a date only, while your database contains full date/time values. Now) When I run my code the following exception occur. I know I can copy the data out into another table, convert that column to a DateTime column, sort on that and copy it back but I'm wondering if there's a neater way. Select(x => DateTime. StartDate; List<string> dates = Query. Manipulate DateTime using Linq. Convert yyyyMMdd to date time in linq select. EndDate and . Just convert your date string to DateTime and then in the LINQ convert the string to DateTime that's coming back in order to do the comparison. EndDate) <= 0 select p. Equals(strprojectId) orderby dt. Modified 14 years, 1 month ago. 1. Min(p => p. ToString conversion in the C# LINQ query. Date) Statement, Linq doesn't know the Date Property, because in this Statement x is only a string, not a CsvEntry. Compare(date1, date2) use. (from t in ctx. Date here will give you date only without time, as you need. The view should get a DateTime, and it would be the view's job to translate that internal DateTime into a presentable value be it a localized string, a clock graphic, a sun/moon representation, etc. Year > 2013 select p. One way to do it is to query StatusDate from the database, and then convert it to string in memory like this:. DateTimeStart are date in this format: 23/01/2013 12:4 I'm having problems with a LINQ query - im using it to select some flight time data : new XElement("Data", from data in table select new XElement("data", new . ToList(); Here ReqDate is a DateTime field. yyyy-MM-dd yyyyMMdd yyyyMM. Today. Select(c => new { MonthId = c. NullReferenceException is for reference types (on the heap). You only apply a format, when you turn it into a human readable string. AsEnumerable will separate the L2E from L2O part) that call date formatting methods and other stuff that isn't supported by L2E var r = from c in My requirement is that the DateTime has to be compared only till milliseconds and hence I have to apply formatter. USER_NAME} is a shorthand for new {EMAIL = res. member_Id select new { MemberID = v. Orders. OrderByDescending(). I strongly advice to use parameters and never format your own SQL code by pasting together homegrown formatted statement I suspect this is DateTime. ToList(); I want to change this so that I want to select the earliest date value for example var list = You can select multiple fields using linq Select as shown above in various examples this will return as an Anonymous Type. you need to check for this link, as it will tell the simplified way of filtering data in where clause Where clause in datetime format . Select(x => (string)((DateTime)(x. E. Select(x =&gt; new { month = x, Sort = I am migrating an existing MVC5 project to . If you are tring to select on a table the records that have a DateTime field (in this example called DateFiled) between two DateTime value, if you specify:. DateTime AddDays(Double)' method, and this method cannot be translated into a store expression. Date)}; If you want the whole record: LINQ's . LINQtoSQL Not Allowing DateTime Conversion to String. DateTime dt = timeStampList[i]; IEnumerable<DataRow> selectedRows = Apart from string they are having records as 12-june, june etc which are not valid datetime. Databases have corresponding DateTime types where you can store information as DateTime itself. If you are tring to select on a table the records that have a DateTime field (in this example called DateFiled) between two DateTime value, if you specify: DateFiled >= dateValue && DateFiled <= dateValue I have a column in the database as EffectiveDate which is the type of DateTime. OrderDate. @Muflix If the target db is SqlServer. I have following expression var list = techlinks. Net methods (like DateTime. Period) > DateTime. from p in Projects where DateTime. e. DateTimeStart). When you use the Select(x => x. AddDays(-1); YesterdaysRegistrations = db. Prog join tf in db. DateTimeColumn2. EndDate select p. NET Core MVC application with the culture set to en-GB using a date time format of dd/mm/yyyy. 23:59:30: dt. of rows and columns in that datatable have Date columns The Date columns format have to change Input: dd-MM-yyyy Expected Output yyyy-MM-dd yyyy-MM-dd yyyy-MM-dd Without losing other datain the datatable Thanks Shyam ToString() is not supported in Linq to Entities - there is a list of function helpers as part of SqlFunctions but this doesn't support Date to string conversion. GroupBy(x => x. table where Convert. ToShortDateString() Or you can also do I have the following where I need to get only the Date (not datetime) from ReqDate and RepDeclined which are both nullable datetime fields. Linq datetime date match in query c#. net formating in memory. Never ever store DateTime strings in database. So here's the steps your Date/Time is going to take: Get returned as query content from the database ; Get stored in the DateTime property ; Be shown to the user; To format a value from a DateTime object there are several options - check out the methods on the DateTime @Martynas: SelectMany simply "flattens" your original collection into a single sequence containing all the Values objects from the Vals collections of all the MeasurePoint objects. Viewed 2k times 0 . var mapped = Enumerable. Select(o => new demoDate { DueDate=DateTime. I want to select all the purchase orders for today. ParseExact(txtDate1. Converting to strings means you are at the mercy of the current culture (locale) settings. Grp) Statement you don't have a IEnumerable<CSVEntry> anymore. Linq-to-Entities: Format Date in select query expression. Indepth == false select new { Date = z. Item1, f. var objStatDate = (from dt in _objContext. select { ts '2013-10-01 13:45:01' } will return october 1st, 1:45:01 PM. var data = (from v in abc. Join_date == yesterday). I have a linq query to get EffectiveDate from the table. Linq; using System. Parse("23-10 I insert Datetime value into a SQL Server database with the following format: dd-MM-yy HH:mm. Year and r. How can I create a DateTime value in a Linq Query? 0. adding [DbFunction("FORMAT", "")]public static string Format(DateTime value, string format) => value. from p in db. var info = from pr in db. . IQueryable<DateTime> Query = from d in _context. ActivityDate >= EndDateTo && z. DateOfBirth. See code: DateTime dt; Console. Category. I have a fairly long linq query and everything works as it should. DateTimeValue &gt;= I'm trying to understand how LINQ can be used to group data by intervals of time; and then ideally aggregate each group. DateOfBirth is a Nullable < DateTime > Source is Entity Framework 4 Date isn't an attribute but a node, you want /Photo/Date not /Photo[@Date] Also use XMLConvert. Would the DateTime. I have tried all sorts of variations on outputting format for the DateTime in the filter but they all have the same result. However, Convert. type, category, country, subsidary fields are nvarchar field and date is DateTime Field I am trying to sort a DataTable on a string column by DateTime. date >= where startDate and endDate are both DateTime. Remember the nature of EF an Queryables. You don't need DateTime. tbl_MyTable WHERE CAST(CONVERT(CHAR(10), DateTimeValueColumn, 102) AS DATE) <= CAST(CONVERT(CHAR(10),GETDATE(),102) AS DATE) AND Active = 1 So could anyone give me suggestion how could I check only date Is it a way to convert a string of yyyyMMdd to date time in linq select. var query = deliveriesItemsbypaging. ToString("yyyy/MM/dd hh:mm:ss tt") Example 2 - Datetime range for the last 30 days. Distinct(); x. AgentProductTraining where a. Is there a way to handle nullable types inside the LINQ in a case like this? Edit: I was not paying attention to the fact, that since this is using entity framework, methods that work with standard LINQ cannot be used unless they have a SQL translation. Where(p =&gt; p. Date). NET sources like SqlServer Linq sometimes just can't 'translate' the Linq to a SQl statement. Date to a database method, which it cannot do by default. 1 - I try Convert. Now, p. Since you want to compare date values, it is necessary to convert them using DateTime. Query= (from z in ctx. yyyy") should fix the issue (as Gert The reason that the results are incorrect is that the SubmittedDate is a DateTimeOffSet in Sql Server. ExpiryDate) . field) has a value this is converted into a date string otherwise if the This is my sql query ([Date] have format datatime2): SELECT [Date], TestingValues FROM [SalesValue]. Order_Reports. Wright Why do you think it's a bug? If the table was created by EFC migration, the column type would be datetime2. Select(model => new { Item1 = model. js which offers a nice interface to many of the LINQ methods. Filter a DataTable using Date value? 0. Skip to main content. To further explain @DGibbs comment: This is an EF issue, not a LINQ issue. Where(p => p. I generally use standard DateTime formats in the View in the display logic. net-7. linq is trying to convert date to string using sql but since there is no ToString() method in sql it can't convert it, this behavior is by design - Joakim. toString(format), – KreepN Commented Jul 29, 2013 at 18:46 The problem is that Linq-to-Entities is not capable of turning Convert. Year, x. Something like: var endDate = DateTime. Format the date outside sql and parse the date before using in query: . If you bring all the records into memory with a call to AsEnumerable() or ToList() then you will be using Linq-To-Sql and that will work with C# functions:. Date); . How do I go about getting this? Linq date format. Since I can't copy paste your code with my modifications (you need to perform the date formatting outside the linq statement, whether using a foreach loop, or any other method). Linq - between dates query. Month == today. Docs also in Japanese if that would be easier. Today select d. table . load the data) to your application and then parse it. I was trying to illustrate how to format a DateTime. toDateTime(), DateTime. This does not give me the right format ("d/m/yyy") I don't want to write a query and then do a . Net. If you must execute the logic I want to format a nullable datetime value, how can I do that? For example in Linq: var expected1 = _context. Now - debt. OrderBy(c => c. I'd assume you could just put string format = "dd-MM-yyyy"; before the linq statement and the following in your select new: DtFabricacao = a. StartDate. 3 LINQ to Entities DateTime is inconsistent. ReviewDate, EmployeeName=pr. Day <= toDate). 333 or NULL. Hi, how do I convert this variable x. I've found every DateTime format you can think of except the one I need: yyyymm. Before you ignore / vote-to-close this question, I consider this a valid question to ask because code clarity is an important topic of discussion, it's essential to writing maintainable code and I would greatly appreciate answers from those who have come across this before. InvariantCulture); DateTime date2 = I think I realize your problem, after you posted the screenshot. But it is getting cartesian result of all the usernames where DOB contains records of 8th Month (current month) and DOB that has date 29th (current system date). yourDate. For debugging it make it easier if first you create a string containing your filter, then do the select using that string. Amount}. Are the columns actually datetime or are they string? And why Linq when you can just use a For Each Row and Assign? Simpler to code, Entity Framework Core allows compare date part of datetime/timestamp column in your database. InvariantCulture). ToString("yyyy-MM-dd")) Or (from t in ctx. GetItems(). Improve this This question describes how to convert a date time to the string name of the month. For instance, let's say your class is Person, so you have a generated partial Person class in Blah. ReportDueDateTime), OrderReportID= However, I'd personally keep the values as DateTime values in the LINQ to Entities part, and only transform to text in the . ToDateTime is looking for a single value. Let your view layer be responsible for formatting. DtFabricacao. Query: session. Share. This is happening because LINQ to Entities is trying to convert the expression tree into a SQL query, select new PerformanceReviewsDTO { ReviewDate=pr. Now). Examples with nullable DateTime: doesn't compile. Whether it works or not will depend on whether it can be translated to SQL or not. Using LINQ to search between two Dates and Times. In_L I have a simple Linq to Enities table to query and get the most recent records using Date field. A rough idea: The power of Linq sometimes works against it ;-) It is so powerful you can't imagine there a things it can't do. – Try using this: DateTime today = DateTime. toList() method and then convert the datetime to string with the . Distinct(); I think this solves your problem First of all, you don't convert a DateTime object to some format, you display it in some format. Mapping. Some functions aren't allowed to run inside the linq, as linq needs to translate them to sql. The problem here is that DateTime. yyyy") with YourDbContext. ParseExact(), DateTime. The query is something like. ActualEta. sreh mnspo zpxu etxmq mrkq mdfmo iqtijd kituzf yojrb etwfrj