I want accecpt all integer and non zero

Hi I have a textbox on page that should be numeric and non zero What can we set the ValidationExpression to validation control

Can any body write Solution for validating input textboxes in Gridview I need to validate for value shouldn't blank and must be numeric.

Hi can any one help me.. I need to disply a girdview with empty datasource . and with messege "No Items" in the position of first record. footer with textboxs to insert the record into gridview.