Trigger Linkbutton automatically once grid is loaded

[Baal]

I have a RadGrid. It contains multiple controls inside of it. One of them is a linkbutton whose clientClick triggers window.open. After the grid is loaded, I want to trigger the linkbutton's click if and only if the grid contains only one item.

I am defining the grid as follows:

<rad:RadGrid ID="rg" runat="server">
    <ClientSettings>
        <ClientEvents OnDataBound="rg_DataBound" />
    </ClientSettings>
    <MasterTableView PageSize="50" DataSourceID="ods" DataKeyNames="Id">
            <rad:GridTemplateColumn HeaderText="Name" SortExpression="a.Name">
                <ItemTemplate>
                    <asp:LinkButton ID="lblName" runat="server" />
                </ItemTemplate>
            </rad:GridTemplateColumn>
    </MasterTableView>
</rad:RadGrid>

In my codebehind, I am definining the ClientClick at the ItemCreated method.

var lb = (LinkButton)e.Item.FindControl("lbName");
lb.OnClientClick = "window.open('NewPage.aspx?id=" + obj.Id + "'); return false;";

I implemented the client grid databound as follows:

function rg_DataBound(sender, e) {

   var masterTable = $find('<%= rg.ClientID %>').get_masterTableView;

   var dataItems = masterTable.get_dataItems();

 

   if (masterTable.get_pageCount() == 1 && dataItems.get_count() == 1) {

      var lb = dataItems[0].findControl('lbName');

      lb.click();

   }


}

But this javascript method does not even get fired. Basically I have two questions at this time:
1. Am I in the right track?
2. Why is rg_DataBound not firing?

Thanks.

[Tsvetina]

Hello Baal,

Your logic seems correct. However, I would advise you to use the client OnGridCreated event since it is fired every time the page loads, while the OnDataBound event is fired only when using client side data-binding.

Regards,
Tsvetina
the Telerik team

[Baal]

Hello Tsvetina,

OnGridCreated works. I had a few implementation issues, which I fixed. Here's what the function looks like:

function rg_GridCreated(sender, e) {
    var masterTable = sender.get_masterTableView();
    var dataItems = masterTable.get_dataItems();

    if (masterTable.get_pageCount() == 1 && dataItems.length == 1) {
        var lb = dataItems[0].findControl('lbName');
        lb.click();
    }
}

Everything works now, except for lb, which is always null. I am using Telerik.Web.UI 2010.2.173.35.

Thanks.

[Tsvetina]

Hello Baal,

In the mark up of your previous post the control was named lblName while in the current javascript you try to address it using lbName. Can you confirm that if this is the cause of the issue?

Regards,
Tsvetina
the Telerik team

[Baal]

lblName was a typo. It should have been lbName.

The problem is findControl. I changed findControl to findElement and it worked.

Thanks.