Update Label With Key Value From Grid Row Selection

[Daniel]

I'm trying to make a label control update to display the key value for the users row selection in a Radgrid.  For some reason I can't get this to work.  Data is populated by way of some Linq to Entities code in a separate class.  Can someone show me what I'm doing wrong?

Below is the relevant code from my aspx page and code behind.  

<form id="form1" runat="server">
    <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
        <Scripts>
            <%--Needed for JavaScript IntelliSense in VS2010--%>
            <%--For VS2008 replace RadScriptManager with ScriptManager--%>
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />
            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />
        </Scripts>
    </telerik:RadScriptManager>
    <script type="text/javascript">
        //Put your JavaScript code here.
    </script>
    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
    </telerik:RadAjaxManager>
    <div>

        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
        <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" Height="654px"
            width="654px">
            <telerik:RadTabStrip ID="RadTabStrip1" runat="server"
            ontabclick="RadTabStrip1_TabClick" SelectedIndex="0" AutoPostBack="True"
            Skin="Vista">
                <Tabs>
                    <telerik:RadTab runat="server" Text="Pending" Selected="True">
                    </telerik:RadTab>
                    <telerik:RadTab runat="server" Text="In Storage">
                    </telerik:RadTab>
                    <telerik:RadTab runat="server" Text="Returned">
                    </telerik:RadTab>
                </Tabs>
            </telerik:RadTabStrip>
            <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
            <telerik:RadGrid ID="RadGrid1" runat="server" CellSpacing="0" GridLines="None"
                Height="300px" Width="654px" OnItemCommand="RadGrid1_ItemCommand"
                AutoGenerateColumns="False">
                <ClientSettings EnablePostBackOnRowClick="True">
                    <Selecting AllowRowSelect="True" />
                    <Scrolling AllowScroll="True" />
                    <Resizing AllowColumnResize="True" />
                </ClientSettings>
                <MasterTableView Width="100%" DataKeyNames="Tag">
                    <CommandItemSettings ExportToPdfText="Export to PDF" />
                    <RowIndicatorColumn FilterControlAltText="Filter RowIndicator column">
                        <HeaderStyle Width="20px" />
                    </RowIndicatorColumn>
                    <ExpandCollapseColumn FilterControlAltText="Filter ExpandColumn column">
                        <HeaderStyle Width="20px" />
                    </ExpandCollapseColumn>
                    <Columns>
                        <telerik:GridBoundColumn DataField="Tag"
                            FilterControlAltText="Filter column column" HeaderText="Tag"
                            UniqueName="column">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="Name"
                            FilterControlAltText="Filter column1 column" HeaderText="Name"
                            UniqueName="column1">
                        </telerik:GridBoundColumn>
                        <telerik:GridDateTimeColumn DataField="Received"
                            FilterControlAltText="Filter column2 column" HeaderText="Received"
                            UniqueName="column2">
                        </telerik:GridDateTimeColumn>
                        <telerik:GridDateTimeColumn DataField="Shipped"
                            FilterControlAltText="Filter column3 column" HeaderText="Shipped"
                            UniqueName="column3">
                        </telerik:GridDateTimeColumn>
                    </Columns>
                    <EditFormSettings>
                        <EditColumn FilterControlAltText="Filter EditCommandColumn column">
                        </EditColumn>
                    </EditFormSettings>
                </MasterTableView>
                <FilterMenu EnableImageSprites="False">
                </FilterMenu>
                <HeaderContextMenu CssClass="GridContextMenu GridContextMenu_Default">
                </HeaderContextMenu>
            </telerik:RadGrid>
            <asp:Label ID="Label3" runat="server" Text="Label"></asp:Label>
        </telerik:RadAjaxPanel>

public partial class Inventory : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {

        string CurrentUserEmail = Membership.GetUser().Email;

        int CurrentUserId = Sample.Data_Access.UserViewModel.GetUserIdByEmail(CurrentUserEmail);

        Label1.Text = CurrentUserEmail;

        int StatusID;

        StatusID = RadTabStrip1.SelectedIndex;

        RadGrid1.DataSource = Sample.Data_Access.PackageViewModel.GetUserBoxesByStatus(CurrentUserId, StatusID);
        RadGrid1.DataBind();


    }

        protected void RadTabStrip1_TabClick(object sender, RadTabStripEventArgs e)
        {

        string CurrentUserEmail = Membership.GetUser().Email;

        int CurrentUserId = Sample.Data_Access.UserViewModel.GetUserIdByEmail(CurrentUserEmail);

        Label1.Text = CurrentUserEmail;

        int StatusID;

        StatusID = RadTabStrip1.SelectedIndex;

        RadGrid1.DataSource = Sample.Data_Access.PackageViewModel.GetUserBoxesByStatus(CurrentUserId, StatusID);
        RadGrid1.DataBind();

        }

        protected void RadGrid1_ItemCommand(object source, Telerik.Web.UI.GridCommandEventArgs e)
        {
            Label3.Text = RadGrid1.SelectedItems[0].OwnerTableView.DataKeyValues[RadGrid1.SelectedItems[0].ItemIndex]["column"].ToString();
            //Label2.Text = RadGrid1.SelectedItems[0].OwnerTableView.DataKeyValues[RadGrid1.SelectedItems[0].ItemIndex]["tag"].ToString();
            //e.ToString() = Label3.Text;
        }



    //TextBox1.Text = grdCategory.SelectedItems[0].OwnerTableView.DataKeyValues[grdCategory.SelectedItems[0].ItemIndex]["category_id"].ToString();



}

[Princy]

Hello,

You can try the following code snippet in ItemCommand event to get the DataKeyValue of selected row in Label control.

C#:

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)
   {
       if (e.CommandName == "RowClick")
       {
              GridDataItem selectedRow=(GridDataItem)RadGrid1.SelectedItems[0];
               Label3.Text = selectedRow.GetDataKeyValue("Tag").ToString();
       }
   }

Thanks,
Princy.

[Daniel]

Thanks Princy.  I tried what you suggested but it is still not working as expected.  The specific exception it is throwing is the following:

"Error: Sys.WebForms.PageRequestManagerServerErrorException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index"

Any ideas?

[Princy]

Hello,

You can also try the same code in 'onselectedindexchanged' event of RadGrid like below.

ASPX:

<telerik:RadGrid runat="server" ID="RadGrid1"  onselectedindexchanged="RadGrid1_SelectedIndexChanged">

C#:

protected void RadGrid1_SelectedIndexChanged(object sender, EventArgs e)
   {
       GridDataItem selectedRow = (GridDataItem)RadGrid1.SelectedItems[0];
       Label1.Text = selectedRow.GetDataKeyValue("EmpId").ToString();
   }

Note:Ensure that EnablePostBackOnRowClick is true to fire this event..

Thanks,
Princy

[Daniel]

I tried as you suggested but still receive the same "index was out of range" exception as described in my previous reply.  EnablePostBackOnRowClick is indeed set to True.