[Solved] GridClientSelectColumn header checkbox issue

[Swapnil]

Hi,
i am using GridClientSelectColumn for header checkbox to check all records at one click but when i chek that checkbox it gets checked ,but after refresh all records wiil be unchecked
Below is my code for reference

<telerik:RadGrid ID="RadGrid1" runat="server" AllowMultiRowSelection="True" AllowPaging="True"
         PageSize="5" AllowSorting="True"
         OnNeedDataSource="RadGrid1_NeedDataSource" CellSpacing="0"
         GridLines="None" ShowGroupPanel="True" Skin="Default"
         onitemcommand="RadGrid1_ItemCommand" onprerender="RadGrid1_PreRender">
         <PagerStyle Mode="NextPrevAndNumeric" AlwaysVisible="true"></PagerStyle>
         <ClientSettings Selecting-AllowRowSelect="true" AllowDragToGroup="True" EnablePostBackOnRowClick="true" >
             <Selecting AllowRowSelect="True" UseClientSelectColumnOnly="True"></Selecting>


         </ClientSettings>
         <MasterTableView DataKeyNames="UserId">
             <Columns>

                 <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" />
             </Columns>
             <PagerStyle AlwaysVisible="True"></PagerStyle>
         </MasterTableView>
     </telerik:RadGrid>

Thanks.

[Swapnil]

and i also want the ids associated with that checkbox on external button click?
Thanks

[Angel Petrov]

Hello Swapnil,

If you rebind the grid it is expected to lose the previously selected items as the controls will recreate in this scenario. That said you should manually persist the selection if rebind is inevitable.

As for extracting the ids of the selected items you can do this in two ways:

1. Client-side by setting a ClientDataKeyNames="UserId" and extracting the values using JavaScript logic

   function Clicked() {
              var selectedItems = $find('<%=RadGrid1.ClientID%>').get_masterTableView().get_selectedItems();
              for (var i = 0; i < selectedItems.length; i++) {
                  var id = selectedItems[i].getDataKeyValue("CustomerID");
              }
          }

2. Server-side by setting a DataKeyName like you have already done and using server-side logic for achieving the same.

   protected void Some_Click1(object sender, EventArgs e)
      {
          for (int i = 0; i < RadGrid1.SelectedItems.Count; i++)
          {
              string id=(RadGrid1.SelectedItems[i] as GridDataItem).GetDataKeyValue("UserId").ToString();
          }
      }

   
   

Regards,
Angel Petrov
Telerik