You're stuck with targeting .NET 2.0 in Visual Studio 2008, but you'd like to use all the latest goodness from .NET 3.x features, like: LINQ Extension Methods Lambdas What can one do to enable this awesomeness? EDIT: I had not originally found the post: http://stackoverflow.com/questions/173080/c-net-3-0-3-5-features-in-2-0-using-v...
I am having a hard time solving this problem, need code for creating a dynamic linq query in C#, asp.net. I have 5 dropdown list that searches different column in same database table and return item filtered value to a single listbox. The problem is there is no sequence that which or all or any wil be selected in DDLs but the combined...
I have a Dictionary<int, string> which I want to take the Key collection into a CSV string. I planned to do: String.Join(",", myDic.Keys.ToArray().Cast<string[]>()); The cast is failing though. Thanks ...
Main problem: how do i group elements by their Date, only if continuous and only if they match some properties? Details: Given this type of object: public class MyObj { public DateTime Date { get; set; } public string ConditionalValue1 { get; set; } public int ConditionalValue2 { get; set; } public int OtherValue { g...
Given the following XML example we could imagine a schema defining Root as containing a sequence of unbound number of choices between Type1 and Type2. <Root> <Type1 /> <Type2 /> <Type2 /> <Type1 /> </Root> I am testing out migrating from the XSD.exe tool which although adds type-safety has a lot of little annoyances. ...
I have somewhere around 20 tables that I am working with. I can update the User table just fine, however, when I try to update my Adress table, nothing happens. I dont receive an exeption and the method looks like it executes ok but when i check my data, the values are still the same. Im thinking that it has to do with the fact that i m...
I'm using the query below: public IEnumerable<QUESTIONARIO_BASE> ListQuestionario() { var query = (from c in _entities.QUESTIONARIO_BASESet .Include("QUESTAO_BASE") .Include("QUESTAO_BASE.DIMENSAO") .Include("QUESTAO_BASE.RESPOSTA_BASE") ...
I have this method, that will be called against from a WCF Client, but for my testing, I'm uisng a local "add project reference." I'm getting the error that I cannot call the DataContext after it's disposed. public IEnumerable<Server> GetServers() { // initialze to null ServersDataContext sdc = null; try...
I've been looking around and I was wondering if this is available in VS10 beta2. So far all I've seen is the Linq to XSD alpha 0.2 preview that works for VS 2008 ...
I am trying to use LINQ to XML in an with the XDocument object. How do you query the result element in the example below? <serv:header> <serv:response> <serv:result>SUCCESS</serv:result> <serv:gsbStatus>PRIMARY</serv:gsbStatus> </serv:response> </serv:header> When I use a statement like this, I get the exception 'Ad...
I have these two classes public class Person { } public class Company { public List<Person> Persons {get;set;} } Challenge: Given a list of Company (i.e., List<Company> Companies). Create a dictionary with the key Person, and a list of Company he belongs to as the values. Note that one Person can belong to multiple Companies. I am o...
I have two tables with the following layout and relationships: Tasks: TaskID StartTime EndTime TaskTypeID ProductionID ------------------------------------------------------------ 1 12:30 14:30 1 1 2 14:30 15:30 2 1 3 11:10 13:40 2 ...
How do I go about passing two sets of Data to a view in ASP.NET MVC? I've tried a couple of things and neither have worked so I've come to the simple conclusion: I'm doing it wrong. I have 2 queries: callRepository.FindOpenCalls() and callRepository.FindAllMyCalls(user) and I want to out put both sets of data to one view via 2 partia...
Hello, Is there a way to get the code below to return null if no objects are found? var news = (from c in childs where c.Name.ToLower().Contains("folder") select c).First(); ...
I have the following xml <?xml version="1.0" encoding="UTF-8"?> <feed xmlns="http://www.w3.org/2005/Atom" xmlns:media="http://search.yahoo.com/mrss/"> <entry><id><![CDATA[text]]></id>< author><name><![CDATA[film24]]></name></author><title><![CDATA[text]]></title> <updated>2009-10-30T15:55:13+00:00</updated><published>2009-10-30T0...
I am getting error msg on the word Records - Type or namespace could not be found. Please help debugging it, what is missing? if (ProjDDL1.SelectedItem.Value != "--") results = CustomSearch<Records>(results, s => s.Business == ProjDDL1.SelectedItem.Value); Method CustomSearch: private DataTable CustomSearch<TKEY>(DataTable dt, Fun...
I have zero knowledge, but I can't find a hello world program for using linq to read a database table, can anybody write a hello world and working program for me? Thank you! ...
Ok I now have this public IEnumerable<roomvu_User> GetLocationUsers( long LocationID, DateTime StartDate, DateTime EndDate, int StartRows, int MaximumRows) { using ( DataClasses_RoomViewDataContext context = Context ) { IEnumerable<roomvu_LocationMapping> Mappings = ( from m in context.ro...
I have two collections of my own reference-type objects that I wrote my own IEquatable.Equals method for, and I want to be able to use LINQ methods on them. So, List<CandyType> candy = dataSource.GetListOfCandy(); List<CandyType> lollyPops = dataSource.GetListOfLollyPops(); var candyOtherThanLollyPops = candy.Except( lollyPops ); Acc...
Hi there, I have the following expression in linq (its a join) and i am selecting into "J" because i need to use J later (currently i just selecting J but once i have this fixed i plan on use J within another subquery after) But it won't let me supply a where using the "V" side hence v.IdOFfice is invalid. I have tried swapping around ...