How to putr validation controls in a data grid?

I have a data grid in which i am editing the value in datagrid.


how to put validation control.


I am using ASP.NETHow to putr validation controls in a data grid?
there is no specific data validation for the same. when the cell is clicked you will have to use the text box and in it u will have to implement the validation control for the same. or else while entering the value u will know which columns have to be numeric or alphabetic. depending on it you will call the specific function for the same.