Cancel Update Gridview

Question

User1028962535 posted

Hello  I trying to prevent my gridview from updating, when a textbox outside of the gridview is empty but it's not working. See code below, any ideas what I am doing wrong?

Sub CustomersGridView_RowCommand(ByVal sender As Object, ByVal e As GridViewCommandEventArgs)

Select Case e.CommandName

Case "Edit"

Case "Cancel"

Case "Update"
If TextBox1.Text = "" Then
CustomersGridView.UpdateRow(CustomersGridView.EditIndex, False)
Response.Write("<script type=""text/javascript"">alert(""Empty textbox cannot save"");</script")
Else
Response.Write("<script type=""text/javascript"">alert(""Data saved ."");</script")
CustomersGridView.UpdateRow(CustomersGridView.EditIndex, True)
End If

End Select

thanks

Dan

Answer 1

User475983607 posted

The code explicitly updates the record then alerts the user.  Remove the update logic.

Case "Update"
	If TextBox1.Text = "" Then
		Response.Write("<script type=""text/javascript"">alert(""Empty textbox cannot save"");</script")
	Else
		Response.Write("<script type=""text/javascript"">alert(""Data saved ."");</script")
		CustomersGridView.UpdateRow(CustomersGridView.EditIndex, True)
	End If

Keep in mind the code shown above runs on the server first, then the client alert fires.

Answer 2

User1028962535 posted

Thanks for the reply, removed the logic but it still updates, tried placing the code here instead and its seems to work now

Protected Sub CustomersGridView_RowUpdating(sender As Object, e As GridViewUpdateEventArgs)

If TextBox1.Text = "" Then

e.Cancel = True
Response.Write("<script type=""text/javascript"">alert(""Empty textbox cannot save"");</script")
Else
e.Cancel = False
Response.Write("<script type=""text/javascript"">alert(""Data saved ."");</script")

End If

End Sub