How to call Javascript function when checkbox columns are checked

[Babu Puchakayala]

Hi,

I am using Gridclientselectcoiumn in my radgrid. I have a label in my commanditemtemplate.  When user checks checkbox i just want to show number of checkboxes selected in that label. Suppose If user selects 4 checkboxes i just want to show like Selected Records: 4.  Here is my code for that......

Grid client select column....

<telerik:GridClientSelectColumn UniqueName="ClientSelectColumn"  HeaderStyle-Width="3%"  ItemStyle-Width="3%">
 <HeaderStyle Width="3%"></HeaderStyle>
 <ItemStyle Width="3%"></ItemStyle>
</telerik:GridClientSelectColumn>

commanditemtemplate

<CommandItemTemplate>
   <td align="right" style="width: 20%">
Selected Records:<asp:Label ID="lblselTsks" Width="20px" Font-Size="10pt" Font-Bold="true" runat="server" Text="0"></asp:Label>
   </td>
</CommandItemTemplate>

codebehind and JS

protected void rg200_DataBound(object sender, EventArgs e)
    {
        foreach (GridDataItem item in rg200.MasterTableView.Items)
        {
            CheckBox chkBoxOne = (CheckBox)item.FindControl("ClientSelectColumn");
            if (chkBoxOne != null)
                chkBoxOne.Attributes.Add("onclick", "javascript:return SelectOne('" + chkBoxOne.ClientID + "')");
        }
    }


JS


function SelectOne(id) {
                var count = 0;
                count = Number(document.getElementById('ctl00_PagePlaceholder_rg200_ctl00_ctl02_ctl00_lblselTsks').innerHTML);
                if (document.getElementById(id).checked == true) {
                    if (!document.getElementById(id).disabled) {
                        count = count + 1;
                    }
                }
                else if (document.getElementById(id).checked == false) {
                    if (!document.getElementById(id).disabled) {
                        count = count - 1;
                    }
                }
                document.getElementById('ctl00_PagePlaceholder_rg200_ctl00_ctl02_ctl00_lblselTsks').innerHTML = count;
            }

The problem is when i select checkbox  like 1 or more, the selected checkboxes count is not displaying. Its always showing Selected Records: 0.( See the image). Where am i doing wrong? How to resolve this issue. Any help should be appreciated.

[Babu Puchakayala]

No Probelm, I got solution.

Thanks