Accessing CommandItemTemplate

[Ryan]

I have defined a custom CommandItemTemplate which contains a LinkButton

<CommandItemTemplate>
  <div style="padding: 5px 5px;">
    <asp:LinkButton ID="linkBtnAddReport" runat="server" CommandName="InitInsert">
      <img style="border:0px;vertical-align:middle;" alt="" src="../../CSS/images/add.gif" /> Add New Report
    </asp:LinkButton>
  </div>
</CommandItemTemplate>

I need to change the Enabled property but I need to change it outside of the GridItemCommand event.

How can I find the LinkButton outside of the GridItemCommand event?

Thanks.

[Shinu]

Hello Ryan,


Use the following code snippet to access the LinkButton placed in CommandItemTemplate.

C#:

GridCommandItem cmdItem = (GridCommandItem)RadGrid1.MasterTableView.GetItems(GridItemType.CommandItem)[0];
LinkButton lnkButton = (LinkButton)cmdItem.FindControl("linkBtnAddReport");
lnkButton.Enabled = false;

-Shinu.

[Ryan]

Thanks Shinu

[Alexander]

Hi, i need something similar. I have CommandItemTemplate of such kind:

<CommandItemTemplate>
    <XXX:FilterBar runat="server" />
    <XXX:HeaderBar runat="server" />
</CommandItemTemplate>

Why I need this - because in FilterBar I might have a set of various controls for filtering grid data: textboxes, combos, etc.

HeaderBar should be filled programmatically.

I tried to access it from OnLoad event, but
MasterTableView.GetItems(GridItemType.CommandItem)
returns zero elements!

Maybe there's a better place to find HeaderBar control inside CommandItemTemplate and add controls to it?

[Iana Tsolova]

Hello Alexander,

Try accessing it in the grid PreRender event, e.g. after the grid is once bound. On initial page load the grid is still not bound and its items are not created.

Greetings,
Iana
the Telerik team

[Alexander]

Thanks. I tried, but in PreRender it's zero either. So the problem is somewhere else...

[Alexander]

In exprerimental way, discovered at last, how to make it work in ItemCreated event:

var headerBar_ = item.Controls[0].Controls.OfType<HeaderBar>().First();

Strange... Why I must access some sub controls, indexes, instead of accessing items directly via some property? What if some other time will be more than 1 controls in command item template somehow? :(
Well, all-in-all such approach seems very unreliable...

[Iana Tsolova]

Hi Alexander,

In the ItemCreated event, you should be able to access the GridCommandItem and its controls as below:

protected void RadGrid_ItemCreated(object sender, GridItemEventArgs e)
{
    if(e.Item is GridCommandItem)
    {
        GridCommandItem commandItem = e.Item as GridCommandItem;
        LinkButton lnk = commandItem.FindControl("lnk_ID") as LinkButton;
        .....
    }
}

You can refer to the below article for more information:
http://www.telerik.com/help/aspnet-ajax/grdaccessingcellsandrows.html

All the best,
Iana
the Telerik team

[Alexander]

Yeap, i've already understood the only possible way to distinct CommandItemTemplate was ItemCreated event... Ok :)

[Mike]

Hi,

 

Has anyone found a better way to do this? I need to access a CommandItemTemplate control from outside the ItemCreated() event.

 

Thanks,

Mike

[Eyup]

Hello Mike,

You can achieve this requirement using the approach demonstrated in the following section:
http://docs.telerik.com/devtools/aspnet-ajax/controls/grid/how-to/Common/using-the--getitems-getcolumn-and-getcolumnsafe-methods#items

I hope this will prove helpful.

Regards,
Eyup
Progress Telerik