This extension library kit provided dll which caters to all .NET objects ranging from UI like WinForm and WPF to normal string types.
You just need to download the dll and add appropriate namespace (Best thing is you will have to add few number of namespace for e.g. If you are interested in WPF extension , you just need to add ExtensionMethodKit.WPF namespace).
ExtensionMethodKit (Click on each link to view more detail)
*PLEASE NOTE:(If you feel that there are some extension methods to be added in this library please contact me and send me the code snippet or just put it in discussion forum)