Connection between Class Library and WPF Application

Hi Vinod Kumar You can add reference of the class library (dll) into your project by right clicking on the project node and selecting ‘add reference’ option. If your class library has any dependent dll which is not in your project references then you may also want to add the dependent dlls. i.e Add the dll you require and its dependent dlls to the references of your project. Also make sure the dlls are of same or earlier versions of dot net than the dot net version you are using for building your WPF application.