Search Results

Search found 11138 results on 446 pages for 'dynamic linq'.

Page 45/446 | < Previous Page | 41 42 43 44 45 46 47 48 49 50 51 52  | Next Page >

• LINQ: How to skip one then take the rest of a sequence

  - by Marcel

  Hi All, i would like to iterate over the items of a List<T>, except the first, preserving the order. Is there an elegant way to do it with LINQ using a statement like: foreach (var item in list.Skip(1).TakeTheRest()) {.... I played around with TakeWhile , but was not successful. Probably there is also another, simple way of doing it?

  Read the article

• Converting SQL Query to LINQ 2 SQL expression

  - by Shyju

  How can i rewrite the below SQL query to its equivalent LINQ 2 SQL expression (both in C# and VB.NET) SELECT t1.itemnmbr, t1.locncode,t1.bin,t2.Total FROM IV00200 t1 (NOLOCK) INNER JOIN IV00112 t2 (NOLOCK) ON t1.itemnmbr = t2.itemnmbr AND t1.bin = t2.bin AND t1.bin = 'MU7I336A80'

  Read the article

• how to Update the XMl value and write back using LINQ

  - by NewDev

  Hi all, i am having query for update the node value using Linq, For example i am have to update <Student> <studentdetail> <studentname>test</studentname> <libraryid>hem001</libraryid> </studentdetail> </Student> in above xml i want to change the value of Student name "test" ti something else like "Undertest" regards NewDev

  Read the article

• Updating value in Linq to SQL IEnumerable

  - by Learner

  Using Linq to SQL: if(!parentlist.childlist.Contains(row1)) parentlist.childlist.Add(row1); else How do I update the required childlist row with row1? Each row of the child list has a unique id. parentlist implements IEnumerable and childlist is IList.

  Read the article

• Sharing LINQ-to-SQL classes/models between multiple projects in a solution

  - by Maxim Z.

  I have multiple C# projects in a Visual Studio solution right now that will all use the same SQL Server database. What is the proper way to share LINQ-to-SQL classes between projects? I'm considering just copying the dmbl files into each project, but I think that may be too redundant. Is there a better way to approach this?

  Read the article

• Supported Linq for WCF Data Services

  - by jfar

  I'm looking for the full list of supported linq extension methods that are compatible with WCF Data Services. By trial and error I've found First() and Single() aren't supported, any others? This gives me a pretty good idea of whats supported, I just don't know whats actually translated via the IQueryProvider.

  Read the article

• How do I cache query results using LINQ?

  - by Vince

  Hi, Is there any way to cache LINQ to SQL queries by looking at the parameters that were previously passed and bypass the database all together? I know L2S caches some database calls, but I'm looking for a permanant solution as in, even if the applciation restarts, that cache reloads and never asks the database again. Are there any frameworks for C#?

  Read the article

• LINQ to SQL table naming

  - by Ivo

  I am using VS2010 and C# When I map/select my database tables with LINQ to SQL I have to option to change the "member" propery, but when i delete the table (because I changed something in the schema for example) and add it again the member value gets "reset". Is it possible to set/override this member programmaticly, so that I dont have to change it by hand everytime I mean the member option of '<'Table Name="dbo.table1" Member="table1"

  Read the article

• Linq equivalent of foreach for IEnumerable

  - by tags2k

  I'd like to do the equivalent of the following in LINQ, but I can't figure out how: IEnumerable<Item> items = GetItems(); items.ForEach(i => i.DoStuff()); What is the real syntax?

  Read the article

• How can I join conditionally in LINQ queries?

  - by Steve Crane

  If I have two tables; Drivers keyed by DriverId and Trips with foreign keys DriverId and CoDriverId, and I want to find all trips where a driver was either the driver or co-driver I could code this in Transact-SQL as select d.DriverId, t.TripId from Trips t inner join Drivers d on t.DriverId = d.DriverId or t.CoDriverId = d.DriverId How could this be coded as a LINQ query?

  Read the article

• how to pass a parameter safely into linq to sql

  - by Blankman

  If I want to get a user that has the email address of '[email protected]', how do I pass that as a parameter in linq? ie.: var a = from u in Users where u.Email = @email Select u; So this would be used in my method: public static GetuserByEmail(string email) Do I just pass in the variable or?

  Read the article

• Trying to get all elements after first match using linq

  - by MatteS

  How do I retrieve all elements after the first one starting with a "-" using linq? var arr = new[] {"-s1", "-s2", "va", "-s3", "va2", "va3"}; var allElementsAfterVA = from a in arr where ???? select a; I want allElementsAfterVA to be "-s3", "va2", "va3"

  Read the article

• Left outer join in LINQ is showing exception

  - by stackuser3

  The folloqing is the excpetion I am getting The null value cannot be assigned to a member with type System.Int32 which is a non-nullable value type. below is my LINQ Statement where QuestionId is the primary key in my table var questionViewsData = from questionViews in objDc.SC_QuestionsViews join questions in objDc.SC_Questions on questionViews.QuestionId equals questions.QuestionId into qs from questions in qs.DefaultIfEmpty() where questionViews.CreatedDate.Date == new DateTime(2010, 4,27) select new { Selected =(questions == null ?-1:questions.QuestionId), QuestioinTitle = questions.Title, VotesCount = questions.VotesCount }; Let me know how to resolve this

  Read the article

• Use of metadatatype in linq-to-sql

  - by jess

  Hi, I had asked this question http://stackoverflow.com/questions/2442149/adding-more-attributes-to-linq-to-sql-entity Now, when I add Browsable attribute to generated entity in designer,it works.But,when I use the MetaDataType approach,and add Browsable attribute in partial class,it does not work "I added a MetaDataType class, and added browsable attribute to property,but seems to have no effect"

  Read the article

• Convert this SQL statement to LINQ-to-SQL

  - by goforebroke

  I have struggled converting this SQL statement to LINQ to SQL VB.Net 9.0. I have used Linqer but no success. Any help would be appreciated select t.TeeId, t.DescriptionId, t.[Description], t.Rating, t.Slope, case when d.TotalHoles <> h.TotalHoles then 0 else 1 end [Status] from dbo.CourseDescription d inner join dbo.CourseTees t on t.DescriptionId = d.DescriptionId inner join (select TeeId, count(*) as TotalHoles from dbo.CourseHoles group by TeeId) h on h.TeeId = t.TeeId where d.CourseId = 1

  Read the article

• Convert this SQL Query into LINQ (OVER (PARTITION BY Date))

  - by user1106649

  Here's the query i'm trying to convert into Linq: SELECT R.Code, R.FlightNumber, S.[Date], S.Station, R.Liters, SUM(R.Liters) OVER (PARTITION BY Year([Date]), Month([Date]), Day([Date])) AS Total_Liters FROM S INNER JOIN R ON S.ID = R.SID WHERE (R.Code = 'AC') AND FlightNumber = '124' GROUP BY Station, Code, FlightNumber, [Date], Liter ORDER BY R.FlightNumber, [Date] Thanks for any help.

  Read the article

• Cannot use ternary operator in LINQ query

  - by Nissan Fan

  I can't figure out why I get a Object reference not set to an instance of an object. error if I use a ternary operator in my LINQ query. var courses = from d in somesource orderby d.SourceName, d.SourceType select new { ID = d.InternalCode, Name = string.Format("{0} - {1}{2}", d.InternalCode, d.SourceName, (d.SourceType.Length > 0 ? ", " + d.SourceType : string.Empty)) }; Any thoughts?

  Read the article

• LINQ Option Missing in Data Source for Grid View

  - by stringo0

  Hi, I don't see a LINQ option when picking a data source for a grid view - any ideas? I just upgraded to Visual Web Developer 2010. I see the other options like SQL etc. Thanks!

  Read the article

• Persisting and applying Linq Query to collection

  - by MattiasK

  I have a scenario where I would want a plugin to construct a LINQ (to objects) query, send it across an appdomain and then apply and run it against a collection of my choosing Is it possible, how? If not, perhaps I could send a whole method (interface) across the appdomain and run it against the data on the appside? The main thing is that I want the data to reside in the CurrentDomain and the logic for operating on it in the plugin so I don't have to send the data across the boundary...

  Read the article

• error with linq join

  - by Luca Romagnoli

  I have this linq query: var segreterie = from s in db.USR_Utenti join h in db.USR_Accounts on new {s.ID, settings.GruppoSegreteria} equals new {h.USR_UtentiReference,h.ID_Gruppo} select s; that has this problem: The type of one of the expressions in the join clause is incorrect. Type inference failed in the call to 'Join'. how can i do to solve it?

  Read the article

• LINQ-to-SQL eagerly load entire object graph

  - by Paddy

  I have a need to load an entire LINQ-to-SQL object graph from a certain point downwards, loading all child collections and the objects within them etc. This is going to be used to dump out the object structure and data to XML. Is there a way to do this without generating a large hard coded set of DataLoadOptions to 'shape' my data?

  Read the article

• Linq List contains specific values.

  - by Raffaeu

  I need to know if the List I am working with contains only some specific values. var list = new List<string> { "First", "Second", "Third" }; If I want to know if the List contain at least one item with the value "First" I use the Any keyword: var result = list.Any(l => l == "First"); But how I can write a Linq expression that will return true/false only if the List contains "First" and "Second" values?

  Read the article

• linq subquery child collection to string

  - by bill

  Hi All, i am trying to figure out how to write a linq query that will return a child collections "name" property as a string. I have a BO that has a "options" property where the options are the "name" property of each option in an "order" object. I would like the result to look something like order.id = 12312 order.date = 12/03/10 order.options = "Option 1 Name, Option 2 Name, Option 3 Name" I hope this makes sense. thanks for any and all help!

  Read the article

• OrderBy on children in a LINQ Query

  - by eka808

  Hello everybody I have a user entity who contains a one to many relationship with a role entity So with this linq expression : from user in USER_TABLE.Include("USERROLE_TABLE") order by user.Name select user I can get users with related roles as a child. My problem is that i want to get roles of each user ordered alphabetically. How can i do that ? I googled a lot and don't find anything Thank's by advance !

  Read the article

• get data using junction table with linq-sql confused :$

  - by raklos

  Im using linq-sql .I have 3 tables. e.g Project, People and a ProjectsPeople(fk's ProjectID and PeopleID) (junction) Table. given a set of peopleIDArray (an array of ints as people ID's) how can i get only Projects that have atleast one of the peopleId's associated with them? i.e there will be atleast one (may be more) record in the ProjectsPeople table that will have a ProjectId and an id from the peopleIDArray ) thanks

  Read the article

< Previous Page | 41 42 43 44 45 46 47 48 49 50 51 52  | Next Page >