tömma rader

hej!

hur gör man för att tömma nedan fält efter man lagt in dem i databsen, alltså rensa så de blir tomma efter inmatning.

<table width="800" border="1" cellspacing="0">
                <tr valign="top">
                    
                    <th>Datum</th>
                    <th>Arena</th>
                </tr>
                    
                    
                    <asp:Repeater ID="RepeaterRow" runat="server" OnItemDataBound="RepeaterRow_ItemDataBound" OnItemCommand="RepeaterRow_ItemCommand">
                    <ItemTemplate>
                        <tr>
                           <%--<td><asp:DropDownList ID="DropDownListArena" runat="server" AutoPostBack="True"  DataTextField="arenaName"  DataValueField="arenaId" OnSelectedIndexChanged="DropDownListArena_SelectedIndexChanged" /></td>--%>
                            
                            <td><asp:TextBox ID="TextBoxDatum" runat="server" Text='<%# (((DataRowView)Container.DataItem).Row)["Datum"].ToString() %>' Width="60px" /><asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBoxDatum">*</asp:RequiredFieldValidator></td>
                            
                            <td><asp:DropDownList ID="DropDownListCity" runat="server" AutoPostBack="false" DataTextField="arenaName" DataValueField="arenaId" OnSelectedIndexChanged="DropDownListCity_SelectedIndexChanged"  /></td>
                           
                            <td><asp:ImageButton ID="ImageButtonDeleteRow" runat="server" ImageUrl="../image/delete.gif" CommandName="Delete" ToolTip="Ta bort rad" /></td>
                        </tr>
                    </ItemTemplate>
                </asp:Repeater>

           
                    </table>