protected bool IsValidForm() { string errMsg = " Please Enter "; int length = errMsg.Length; bool isErr = false; if (!util.IsValidName(txtStudentName.Text)) { if (errMsg.Length > length) { errMsg += ", " + Environment.NewLine; } errMsg += "Valid Student Name"; isErr = true; } lblError.Text = errMsg; lblError.Visible = isErr; return(!isErr); }