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by Craig Johnston
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Published on 2010-05-16T09:24:31Z
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2010/05/16
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What are anonymous types in C#, and when should they be used?
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I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:…
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Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to…
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The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions…
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I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot…
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Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test…
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Ok everyone, I must be missing something here.
Every LINQ example I have seen for VB.NET anonymous types claims I can do something like this:
Dim Info As EnumerableRowCollection = pDataSet.Tables(0).AsEnumerable
Dim Infos = From a In Info _
…
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Using an anonymous type in VB, which is essential for technologies like LINQ, means that the compiler will generate a class for you based on context and named initializers saving you time and effort. To learn more read on.
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I have a question of how to sort an anonymous type.
Using Linq2SQL I have the following query, which returns a list of submissions:
var submissions = EventSubmissions
.Where(s => s.EventId.Equals(eventId));
Consider the following interface (somewhat simplyfied):
public interface IQuerySorter
{
…
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I'd like to implement MVC while using LINQ (specifically, LINQ-to-entities). The way I would do this is have the Controller generate (or call something which generates) the result-set using LINQ, then return that to the View to display the data. The problem is, if I do:
return (from o in myTable…
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Once again, in this series of posts I look at the parts of the .NET Framework that may seem trivial, but can help improve your code by making it easier to write and maintain. The index of all my past little wonders posts can be found here. In the .NET 3 Framework, Microsoft introduced the concept…
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