How can i add a video opening function in C#?

i have a C# program about videos,, the main problem is that i need a DLL or an open source thing so i can write a program that accepts and play movies


plz help

How can i add a video opening function in C#?
Go to the toolbox in Visual Studio.NET, right click ... Choose Items (or Add/Remove) ... point to the file msdxm.ocx which is located in c:\windows\system32 folder . Add an instance of the new added item to your form. Use the object to open and play movies.