Hi to all,
I have set a require field validator from code behind as above, the validation is working but I don't see the red color 

TextBox txt = (TextBox)gv.FooterRow.FindControl("txt"); RequiredFieldValidator rfv = new RequiredFieldValidator(); rfv.ControlToValidate = txt.ID; rfv.ID = "rfv" + txt.ID; rfv.ValidationGroup = "Add"; rfv.ForeColor = System.Drawing.Color.Red; txt.Controls.Add(rfv); rfv.SetFocusOnError = true; Button btn = (Button)gv.FooterRow.FindControl("btnAdd"); btn .ValidationGroup = "Add"; rfv.Validate(); if (Page.IsValid) { // save to database }

Go to the complete details ...