I use EditItemTemplate and RadNumericTextBox.
How set default value to 100 into the RadNumericTextBox if the user does not fill in the value?
<telerik:GridTemplateColumn UniqueName="sortid" SortExpression="sortid" HeaderText="Sortering" EditFormHeaderTextFormat="" HeaderStyle-Width="100px"> <ItemTemplate> <asp:Label ID="lblSortid" Text='<%# Eval("sortid") %>' runat="server" /> </ItemTemplate> <EditItemTemplate> <telerik:RadNumericTextBox ID="tbSortid" Width="100px" MaxLength="3" Text='<%# Bind("sortid") %>' EmptyMessage="Sortering (100)" ToolTip="Sortering" runat="server"> <NumberFormat DecimalDigits="0" GroupSeparator="" /> </telerik:RadNumericTextBox> <asp:RequiredFieldValidator ID="rfvSortid" ControlToValidate="tbSortid" Display="Dynamic" ErrorMessage="Sortering (100)?" ForeColor="#FF0000" SetFocusOnError="true" runat="server" /> </EditItemTemplate></telerik:GridTemplateColumn>