How to detect if collection contain instance of specific type?

Posted by KentZhou on Stack Overflow See other posts from Stack Overflow or by KentZhou
Published on 2010-03-22T19:48:19Z Indexed on 2010/03/22 19:51 UTC
Read the original article Hit count: 265

Filed under:

c#

|

collections

Suppose I create collection like

Collection<IMyType> coll;

Then I have many implelentations of IMyTypem like, T1, T2, T3...

Then I want know if the collection coll contains a instance of type T1. So I want to write a method like

public bool ContainType( <T>){...}

here the param should be class type, not class instance. How to write code for this kind of issue?

© Stack Overflow or respective owner

Related posts about c#

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
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:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
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… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
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… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
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… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
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… >>> More

Related posts about collections

Creating a custom collections class using System.Collections.CollectionBase

as seen on C# Corner - Search for 'C# Corner'
This article will show you how you can create a class that can behave just like a collection class. >>> More
C#/.NET Little Wonders: The Concurrent Collections (1 of 3)

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Once again we consider some of the lesser known classes and keywords of C#. In the next few weeks, we will discuss the concurrent collections and how they have changed the face of concurrent programming. This week’s post will begin with a general introduction and discuss the ConcurrentStack<T>… >>> More
C#/.NET Fundamentals: Choosing the Right Collection Class

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
The .NET Base Class Library (BCL) has a wide array of collection classes at your disposal which make it easy to manage collections of objects. While it's great to have so many classes available, it can be daunting to choose the right collection to use for any given situation. As hard as it may be… >>> More
Using Tree(Map,Set) in Collections

as seen on Internet.com - Search for 'Internet.com'
To add objects to a Tree(Map, Set), implement the Comparable.compareTo method. >>> More
Using Tree(Map,Set) in Collections

as seen on Internet.com - Search for 'Internet.com'
To add objects to a Tree(Map, Set), implement the Comparable.compareTo method. >>> More