creating a UI with a button which will dynamically create .edmx file at runtime

i want to create a user interface 开发者_如何学Pythonwill should give me the option to select the database from the present ones and accordingly create its .edmx file.

The ADO.NET team released a Sample EDMX Code Generator project.

It's supposed to give you enough insight into how the ADO.NET Entity Designer generates code in Visual Studio and hopefully give you a head start with some sample source code.