Displaying current page stats for RadGrid

Question

So, I'm trying to display something like "Displaying 1-20 of 100" using a RadGrid control. I put the following code in the RadGrid1_PageIndexChanged event:

int showingRowsFrom = ((e.NewPageIndex + 1) * rgResults.PageSize) - rgResults.PageSize + 1;
int showingRowsTo;

if ((e.NewPageIndex + 1) == rgResults.PageCount)
{
    showingRowsTo = GridSource.Tables[0].Rows.Count;
}
else
{
    showingRowsTo = (e.NewPageIndex + 1) * rgResults.PageSize;
}

string rowCount = string.Format("Displaying {0}-{1} of {2}", showingRowsFrom, showingRowsTo, GridSource.Tables[0].Rows.Count);
lblResultsCountBottom.Text = lblResultsCountTop.Text = rowCount;

Unfortunately, it looks like this doesn't do a full postback and the label doesn't end up getting updated. How can I go about doing this? I tried doing it client side and had problems with this, too. It says $find is undefined.

$(document).ready(function () {
    var grid = $find("<%=rgResults.ClientID%>");
    var mtv = grid.get_masterTableView();
    var pageIndex = mtv.get_currentPageIndex();
    alert(pageIndex);
});

Here's the radgrid code:

<radG:RadGrid ID="rgResults" runat="server" AllowMultiRowSelection="True" AllowPaging="True"
        AllowSorting="True" EnableAJAX="False" GridLines="None" OnItemCommand="rgResults_ItemCommand" OnItemDataBound="rgResults_ItemDataBound"
        PageSize="20"
        Skin="Default" Width="100%" OnPageIndexChanged="rgResults_PageIndexChanged" OnSortCommand="rgResults_SortCommand" OnInit="rgResults_Init" OnPreRender="rgResults_PreRender">
    <ClientSettings ApplyStylesOnClient="True">
    </ClientSettings>
    <ItemStyle CssClass="griditemtext" />
    <HeaderStyle CssClass="gridheadertext" />
    <FooterStyle CssClass="gridfootertext" />
    <AlternatingItemStyle CssClass="gridalternetitemtext" />
    <PagerStyle CssClass="gridpagertext" Mode="NumericPages" />
    <CommandItemStyle CssClass="gridcommandtext" />
    <SelectedItemStyle CssClass="gridselecteditemtext" />
    <MasterTableView AutoGenerateColumns="False"
        DataKeyNames="Article Number" Font-Bold="False" Font-Italic="False" CommandItemDisplay="None" Font-Overline="False"
        Font-Strikeout="False" Font-Underline="False" GridLines="Both">
        <ExpandCollapseColumn Visible="False">
            <HeaderStyle Width="19px" />
        </ExpandCollapseColumn>
        <RowIndicatorColumn Visible="False">
            <HeaderStyle Width="20px" />
        </RowIndicatorColumn>
        <PagerStyle Mode="NumericPages" />
        <Columns>
        </Columns>
    </MasterTableView>
</radG:RadGrid>

I won't post the code for all of the columns, because they're all done the same way, but here's the gist :-p

var hyperLinkColumn = new GridHyperLinkColumn
{
    DataNavigateUrlFields = new[] { "TransactionID" },
    Target = "_blank",
    DataNavigateUrlFormatString = @"~/w1/SearchResultDetail.aspx?id={0}",
    DataTextField = "Article Number",
    HeaderText = "Article Number",
    SortExpression = "Article Number",
    UniqueName = "ArticleNumber"
};
rgResults.Columns.Add(hyperLinkColumn);

Answer 1

Well it seems I have found an answer to my question. I've tried tons of different things, but it looks like the one that did it was maybe referencing the wrong version.

I was using:

Telerik.WebControls.GridBoundColumn

instead of

Telerik.Web.UI.GridBoundColumn

for example.

Once I changed this around, the $find, and other ajax stuff started working. Maybe I was using the non-AJAX RadGrid before, which would explain it, I suppose...

But anyways, thanks to @rdmptn for all of your help!