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• LINQ to Entities pulling back entire table

  - by Focus

  In my application I'm pulling back a user's "feed". This contains all of that user's activities, events, friend requests from other users, etc. When I pull back the feed I'm calling various functions to filter the request along the way. var userFeed = GetFeed(db); // Query to pull back all data userFeed = FilterByUser(userFeed,…

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• How can I do this with LINQ?

  - by Liam

  All I'm after doing is this: SELECT CallTypeID, Count(CallTypeID) as NumberOfCalls FROM [Helpdesk_HR].[dbo].[CallHeader] WHERE CallHeader.DateOpened <= GETDATE()-7 GROUP BY CallTypeID in LINQ. But I can't work out a way of doing it and getting it to work. I would use Linqer, but my company won't pay for it at present. Any help is greatly…

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• LINQ Query Help!

  - by rk1962

  Can someone hep me converting the following SQL query into LINQ? select convert(varchar(10),date,110) as 'Date', max(users) as 'Maximum Number of Users', max(transactions) as 'Maximum Number of Transactions' from stats where datepart(Year, Date) = '2010' group by convert(varchar(10),date,110) order by…

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• Method 'SingleOrDefault' not supported by Linq to Entities

  - by user300992

  I read other posts on similar problem on using SingleOfDefault on Linq-To-Entity, some suggested using "First()" and some others suggested using "Extension" method to implement the Single(). This code throws exception: Movie movie = (from a in movies where a.MovieID == '12345' …

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• Use Any() and Count() in Dynamic Linq

  - by ArpanDesai

  I am trying to write dynamic Linq Library query to fetch record on condition, Customers who has order count is greater than 3 and ShipVia field equal 2. Below is my syntax what i have tried. object[] objArr = new object[10]; objArr[0] = 1; IQueryable<Customer> test =…

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• return from a linq where statement

  - by Vaccano

  I have the following link function MyLinqToSQLTable.Where(x => x.objectID == paramObjectID).ToList(); I most of the time you can change a linq call to be several lines by adding curly brackets around the method body. Like this: MyLinqToSQLTable.Where(x => { …

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• C# 4.0: Dynamic Programming

  - by Paulo Morgado

  The major feature of C# 4.0 is dynamic programming. Not just dynamic typing, but dynamic in broader sense, which means talking to anything that is not statically typed to be a .NET object. Dynamic Language Runtime The Dynamic Language Runtime (DLR) is piece of technology…

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• Parse XML tree with no id using LINQ to XML

  - by Danny

  Requirement I want to read a XML tree, fill my objects with encountered attributes and after every run a method (insert it into my db). The amount of parents is not specified, also the order is not specified, it could be, address-death-death-address-address for example …

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• Why I am getting Null from this statement. Query Syntax in C#

  - by Shantanu Gupta

  This is not working. Returns Null to dept_list. var dept_list = ((from map in DtMapGuestDepartment.AsEnumerable() where map.Field<Nullable<long>>("Guest_Id") == 174 select…

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• How to update single object in sql to linq

  - by ebattulga

  For example a = datacontext.customers.FirstOrDefaul(); b = datacontext.customers.Skip(1).FirstOrDefaul(); a.name="name1"; b.Name="name2"; When i call datacontext.SubmitChanges(), Two object updated. I don't want this. I need only…

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• How to differentiate between to similer fields in Linq Join tables

  - by Azhar

  How to differentiate between to select new fields e.g. Description c.Description and lt.Description DataTable lDt = new DataTable(); try { lDt.Columns.Add(new DataColumn("AreaTypeID", typeof(Int32))); …

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• How to differentiate between two similar fields in Linq Join tables

  - by Azhar

  How to differentiate between two select new fields e.g. Description c.Description and lt.Description DataTable lDt = new DataTable(); try { lDt.Columns.Add(new DataColumn("AreaTypeID", typeof(Int32))); …

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• Replacing NHibernate with LINQ to SQL or LINQ to EF

  - by masoud ramezani

  We have a great project that use NHibernate as ORM. We want to migrate to L2S or L2EF. Can we do everything that we do by NHibernate? Do you propose us that doing this work? What is the advantages and disadvantages of this work?

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• Getting a linq table to be dynamically sent to a method

  - by Damian Spaulding

  I have a procedure: var Edit = (from R in Linq.Products where R.ID == RecordID select R).Single(); That I would like to make "Linq.Products" Dynamic. Something like: protected void Page_Load(object…

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• Dynamic Data Associate Related Table Value?

  - by davemackey

  I have create a LINQ-to-SQL project in Visual Studio 2010 using Dynamic Data. In this project I have two tables. One is called phones_extension and the other phones_ten. The list of columns in phones_extension looks like this: id,…

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• how to get cartesian products between database and local sequences in linq?

  - by JD

  I saw this similar question here but can't figure out how to use Contains in Cartesian product desired result situation: …

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• Subsonic 3 LINQ vs LINQ to SQL

  - by Jamil

  Hi, I am using SQL Server 2005 in a project. I have to decide about datalayer. I would like to use LINQ in my project. I…

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• SQL Server and Hyper-V Dynamic Memory Part 2

  - by SQLOS Team

  Part 1 of this series was an introduction and overview of Hyper-V Dynamic Memory. This part looks at SQL Server memory…

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• Dynamic Linq help, different errors depending on object passed as parameter?

  - by sah302

  I have an entityDao that is inherbited by everyone of my objectDaos. I am using Dynamic Linq and trying to get some…

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• LINQ to SQL and missing Many to Many EntityRefs

  - by Rick Strahl

  Ran into an odd behavior today with a many to many mapping of one of my tables in LINQ to SQL. Many to many…

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• How to create breadcrumbs using Dynamic Data/LINQTOSQL framework?

  - by Chicago

  Hello, I need some EXAMPLES or IDEAS on how to created dynamic breadcrumb control which will dynamically…

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• LINQ to SQL or Entities, at this point?

  - by orlon

  I'm a bit late to the game and have decided to spend some spare time learning LINQ. As an exercise, I'm…

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• Mixing Silverlight-Specific System.Xml.Linq dll with Non-Silverlight System.Xml.Linq dll

  - by programatique

  I have a Logic layer that references Silverlight's System.Xml.Linq dll and a GUI that is in WPF (hence…

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• LINQ Generic Query with inherited base class?

  - by sah302

  I am trying to write some generic LINQ queries for my entities, but am having issue doing the more…

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• All the posts in LINQ series

  - by vik20000in

  In Last few weeks I have done a few LINQ series Post. Here is a list of all the posts…

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