Bind table schema to gridview dynamically

Hello,

 

      I have 3 tables.  I need to bind only table schema dynamically.

 

 If I select table 1, schema of table 1 will bind to gridview,   If I select table 2, schema of table 2 will bind to gridview and so on. Remeber I need only schema, not data.

 

 Thanks in Advance.