Can't get selected items on server side in a Radgrid with checkbox

[PPRINC]

Hello Dears,

I am facing an issue.

After upgrading from telerik v2009  to  telerk v2012 , I can't get my selected rows values in a radgrid with checkboxes from code behind

here is the code in the markup

<telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True"
                          PageSize="5"     Width="100%"    OnPageIndexChanged="RadGrid1_PageIndexChanged"
                            GridLines="None" Skin="Vista" AllowMultiRowSelection="True"  >
                            <MasterTableView >
                            <Columns>
                                <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" ></telerik:GridClientSelectColumn>
                            </Columns>
                                <RowIndicatorColumn>
                                    <HeaderStyle Width="20px" />
                                </RowIndicatorColumn>
                                <ExpandCollapseColumn>
                                    <HeaderStyle Width="20px" />
                                </ExpandCollapseColumn>
                                <PagerStyle Mode="NextPrev" />
                            </MasterTableView>
                            <HeaderStyle Font-Bold="True" Font-Italic="False" Font-Overline="False"
                                Font-Strikeout="False" Font-Underline="False" Wrap="True" />
                            <ClientSettings EnableRowHoverStyle="true"  >
                                <Selecting AllowRowSelect="True" UseClientSelectColumnOnly = "true"   />
                            </ClientSettings>
                        </telerik:RadGrid>

and now the code behind

 protected void  Ok_Click(object sender, System.EventArgs e)
        {
foreach (GridDataItem item in RadGrid1.SelectedItems)

               {

                   CheckBox chk = (CheckBox)item["ClientSelectColumn"].Controls[0];

                   id = item["ID"].Text; // get the id with its column name

                   name = item["NAME"].Text; // get the name with its column name

                   chec = chk.Checked;

 

 

               }
}

It doesn't even enter in the loop.
What can I do to resolve it ?

Thank in advance for your assistance

[Princy]

Hi,

I guess you want the selected row on a button click.Please try the code given below.

ASPX:

<telerik:RadGrid ID="RadGrid1" runat="server" AllowMultiRowSelection="True">
   <MasterTableView DataKeyNames="OrderID">
      <Columns>
          <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn"></telerik:GridClientSelectColumn>
    </Columns>
             <RowIndicatorColumn>
                   <HeaderStyle Width="20px" />
            </RowIndicatorColumn>
            <ExpandCollapseColumn>
                  <HeaderStyle Width="20px" />
             </ExpandCollapseColumn>
            <PagerStyle Mode="NextPrev" />
  </MasterTableView>
     <HeaderStyle Font-Bold="True" Font-Italic="False" Font-Overline="False" Font-Strikeout="False"
               Font-Underline="False" Wrap="True" />
    <ClientSettings EnableRowHoverStyle="true">
          <Selecting AllowRowSelect="True" UseClientSelectColumnOnly="true" />
    </ClientSettings>
</telerik:RadGrid>
<asp:Button ID="Button1" runat="server" Text="Ok" onclick="Button1_Click" />

C#:

protected void Button1_Click(object sender, EventArgs e)
{
  foreach (GridDataItem item in RadGrid1.MasterTableView.Items)
   {
     CheckBox chk = (CheckBox)item["ClientSelectColumn"].Controls[0];
      if (chk.Checked)
       {
        string value = item["OrderID"].Text;// access the cell value using ColumnUniqueName
        Response.Write("<script language='javascript'>alert('" + value + " .');</script>");
       }
   }
}

Thanks,
Princy

[PPRINC]

Aleardy found!

As i'm using master pages, I just needed to ad add a radAjaxManager on my master page and a radAjaxManagerProxy on the content page to get it fixed. and that's done.

Thanks anyway,

Regards.

[PPRINC]

Thanks for your support Princy.

Best regards,

[Salim]

[quote]Your quote goes here[/quote]

Hi Princy, 

I tried your code but the checkbox has always property .checked = False no matter what (even if I check it)

[Konstantin Dikov]

Hi Salim,

The example will not work if you are using Simple Data-Binding and if you are calling the DataBind method on each postback. Please use the Advanced Data-Binding instead and see if the approach will work:

• http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/data-binding/understanding-data-binding/server-side-binding/advanced-data-binding-(using-needdatasource-event)

Regards,
Konstantin Dikov
Telerik

[Salim]

I'm already using the advanced data binding but it doesn't work.

[Konstantin Dikov]

Hello Salim,

Could you please open a regular support ticket and attach a sample page demonstrating the issue in question?

Meanwhile you can ensure that you are not disabling the ViewState of the controls and that you are not calling DataBind or Rebind methods, before you try to retrieve the CheckBox value.


Regards,
Konstantin Dikov
Telerik

[Dave]

Salim, did you ever get a resolution on this?  Having the same problem.

-Dave

[Dave]

Nevermind...if I place my databind in Page_PreRender instead of Page_Load it works.  I couldn't find any obvious solution to this...just trial and error.

[yook]

Hi,
I have a rad grid with paging enabled.I select all rows in multiple pages using a GridClientSelectColumn. When I click on print button it prints only the records which are displayed in first page,not all records selected in multiple pages. How to fix it. Plz help...

This is how i selected all checkboxes in multiple pages.
 var selected = {};
                function radGridWarehouseUtility_RowSelected(sender, args) {
                    var LID = args.getDataKeyValue("LID");
                    if (!selected[LID]) {
                        selected[LID] = true;
                    }
                }

                function radGridWarehouseUtility_RowDeselected(sender, args) {
                    var LID = args.getDataKeyValue("LID");
                    if (selected[LID]) {
                        selected[LID] = null;
                    }
                }

               function pageLoad() {
                   var dataItems = $find('<%=radGridWarehouseUtility.ClientID %>').get_masterTableView().get_dataItems();
                   for (var i = 0, j = dataItems.length; i < j; i++) {
                       var item = dataItems[i];
                       if (selected[item.getDataKeyValue("LID")]) {
                           item.set_selected(true);
                       }
                   }
               }

<ClientSettings EnablePostBackOnRowClick="true">
<Selecting AllowRowSelect="True"></Selecting>
<ClientEvents OnRowSelected="radGridWarehouseUtility_RowSelected"
OnRowDeselected="radGridWarehouseUtility_RowDeselected" />
</ClientSettings>

<telerik:GridClientSelectColumn UniqueName="Select" />

code behind...

Protected Sub btnPrint_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnPrint.Click
 For Each item As GridDataItem In radGridWarehouseUtility.SelectedItems
            Dim item1 As GridDataItem = item
            Dim chkBox As CheckBox
            chkBox = DirectCast(item1.Item("Select").Controls(0), CheckBox)

            If chkBox.Enabled Then
                Dim lid As String
                lid = CType(radGridWarehouseUtility.MasterTableView.DataKeyValues(item.ItemIndex)("LID"), String)
                qryParams = qryParams & lid & ","
            End If
        Next
End Sub

Thanks

[yook]

Hi,
I have a rad grid with paging enabled.I select all rows in multiple pages using a GridClientSelectColumn. When I click on print button it prints only the records which are displayed in first page,not all records selected in multiple pages. How to fix it. Plz help...

This is how i selected all checkboxes in multiple pages.
 var selected = {};
                function radGridWarehouseUtility_RowSelected(sender, args) {
                    var LID = args.getDataKeyValue("LID");
                    if (!selected[LID]) {
                        selected[LID] = true;
                    }
                }

                function radGridWarehouseUtility_RowDeselected(sender, args) {
                    var LID = args.getDataKeyValue("LID");
                    if (selected[LID]) {
                        selected[LID] = null;
                    }
                }

               function pageLoad() {
                   var dataItems = $find('<%=radGridWarehouseUtility.ClientID %>').get_masterTableView().get_dataItems();
                   for (var i = 0, j = dataItems.length; i < j; i++) {
                       var item = dataItems[i];
                       if (selected[item.getDataKeyValue("LID")]) {
                           item.set_selected(true);
                       }
                   }
               }

                        <ClientSettings EnablePostBackOnRowClick="true">
                            <Selecting AllowRowSelect="True"></Selecting>
                            <ClientEvents OnRowSelected="radGridWarehouseUtility_RowSelected"
                                OnRowDeselected="radGridWarehouseUtility_RowDeselected" />
                        </ClientSettings>

<telerik:GridClientSelectColumn UniqueName="Select" />

code behind...

Protected Sub btnPrint_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnPrint.Click
 For Each item As GridDataItem In radGridWarehouseUtility.SelectedItems
            Dim item1 As GridDataItem = item
            Dim chkBox As CheckBox
            chkBox = DirectCast(item1.Item("Select").Controls(0), CheckBox)

            If chkBox.Enabled Then
                Dim lid As String
                lid = CType(radGridWarehouseUtility.MasterTableView.DataKeyValues(item.ItemIndex)("LID"), String)
                qryParams = qryParams & lid & ","
            End If
        Next
End Sub

Thanks