Yes, there is a way, you can try this approach:

<ig:RowEditingClientBinding ColumnKey="Date" ControlID="control_Date" GetValueJavaScript="$get({ClientID}).value" SetValueJavaScript="$get({ClientID}).value={value} == null ? '' : {value}" />

Let me know about the results.

The script is ignored because I was using the wrong attribute...Duh!

  If I do this:

SetValueJavascript="$get({ClientID}).value={if (value == null) {' '} else {value}}"

I get a syntax error.

Is there any way to check for a null value and then set the value to the empty string instead of a '0' displaying?

Thanks.

I have tried adding this javascript to the GetValueJavascript attribute, but it is ignored.  This is the code:

 GetValueJavaScript="var LatValue = $get({ClientID}).value;
                                                         if(LatValue == null){
                                                           $get({ClientID}).set('value', '');
                                                         }
                                                         else { $get({ClientID}).value; }"

Sorry for the confusion...

I am setting values in my RowEditing Template by binding using the ClientBindings.  Below is what I am currently doing for the latitude and longitude values:

<Behaviors>
    <ig:RowEditingTemplate CancelButton="buttonCancelEdit" OKButton="buttonOKEdit">
        <ClientBindings>
        <ig:RowEditingClientBinding ColumnKey="Lat" ControlID="txtLatEdit"
             GetValueJavaScript="$get({ClientID}).value"
             SetValueJavaScript="$get({ClientID}).value={value}" />
        <ig:RowEditingClientBinding ColumnKey="Long" ControlID="txtLongEdit"
             GetValueJavaScript="$get({ClientID}).value"
             SetValueJavaScript="$get({ClientID}).value={value}" />  
      </ClientBindings>
    <Template>
         <table id="tblEdit" style="width: 800px; border: 1px solid Black; background-color:White;">
         <tr>
           <td align="left" style="width: 15%;">
                <asp:Label ID="lblLatEdit" runat="server" Text="Latitude: " />
           </td>
           <td align="left" style="width: 35%;">
                <asp:TextBox ID="txtLatEdit" runat="server" Width="200px" />
                <asp:MaskedEditExtender ID="MaskedEditExtender1" runat="server" MaskType="Number"
                        TargetControlID="txtLatEdit" Mask="99.999999999" AcceptNegative="Left">
                </asp:MaskedEditExtender>
           </td>
           <td align="left" style="width: 15%;">
                <asp:Label ID="lblLongEdit" runat="server" Text="Longitude: " />
           </td>
           <td align="left" style="width: 35%;">
                <asp:TextBox ID="txtLongEdit" runat="server" Width="200px" />
                <asp:MaskedEditExtender ID="MaskedEditExtender2" runat="server" MaskType="Number"
                        TargetControlID="txtLongEdit" Mask="99.999999999" AcceptNegative="Left">
                </asp:MaskedEditExtender>
           </td>
        </tr>
        </table>
    </Template>
</ig:RowEditingTemplate>
</Behaviors>   

This works fine if there are values in the Lat and Long elements.  However, if the values from the database are NULL, they are shown as '0'.  I want NULL values to display as an empty string, not 0.

Can I add a conditional statement in the attribute, GetValueJavaScript to set the TextBox for Lat and Long to the empty string if the values are NULL?

Thanks.

Sorry for the confusion...

I am setting values in my RowEditing Template by binding using the ClientBindings.  Below is what I am currently doing for the latitude and longitude values:

<Behaviors>
    <ig:RowEditingTemplate CancelButton="buttonCancelEdit" OKButton="buttonOKEdit">
        <ClientBindings>
        <ig:RowEditingClientBinding ColumnKey="Lat" ControlID="txtLatEdit"
             GetValueJavaScript="$get({ClientID}).value"
             SetValueJavaScript="$get({ClientID}).value={value}" />
        <ig:RowEditingClientBinding ColumnKey="Long" ControlID="txtLongEdit"
             GetValueJavaScript="$get({ClientID}).value"
             SetValueJavaScript="$get({ClientID}).value={value}" />  
      </ClientBindings>
    <Template>
         <table id="tblEdit" style="width: 800px; border: 1px solid Black; background-color:White;">
         <tr>
           <td align="left" style="width: 15%;">
                <asp:Label ID="lblLatEdit" runat="server" Text="Latitude: " />
           </td>
           <td align="left" style="width: 35%;">
                <asp:TextBox ID="txtLatEdit" runat="server" Width="200px" />
                <asp:MaskedEditExtender ID="MaskedEditExtender1" runat="server" MaskType="Number"
                        TargetControlID="txtLatEdit" Mask="99.999999999" AcceptNegative="Left">
                </asp:MaskedEditExtender>
           </td>
           <td align="left" style="width: 15%;">
                <asp:Label ID="lblLongEdit" runat="server" Text="Longitude: " />
           </td>
           <td align="left" style="width: 35%;">
                <asp:TextBox ID="txtLongEdit" runat="server" Width="200px" />
                <asp:MaskedEditExtender ID="MaskedEditExtender2" runat="server" MaskType="Number"
                        TargetControlID="txtLongEdit" Mask="99.999999999" AcceptNegative="Left">
                </asp:MaskedEditExtender>
           </td>
        </tr>
        </table>
    </Template>
</ig:RowEditingTemplate>
</Behaviors>   

This works fine if there are values in the Lat and Long elements.  However, if the values from the database are NULL, they are shown as '0'.  I want NULL values to display as an empty string, not 0.

Can I add a conditional statement in the attribute, GetValueJavaScript to set the TextBox for Lat and Long to the empty string if the values are NULL?

Thanks.