Displaying and updating data from two table in grid view.

Question

Dear Sir/Mam

 

 I have two table.I am retriving data from them and displaying in griview.its nice.

 

when i am going to update in gridview using rowupdating command then it give some error.

 

Please post this type of example:

 

using CountryTable and stateTable and display in gridview and update it correctly.....