Button in Combobox

[amine]

Hi,
I have a combobox with a treeview ( checkbox activated). My problem is when a user selects multiple items he has to click somewhere on the page to exit the combobox, which is not very practical.
can I have two buttons "OK" "Cancel" in the combox? Something like that :
http://www.hostingpics.net/viewer.php?id=326557ButtoninCombo.png  

Thank you very much. 

[Princy]

Hi amine,

Try adding buttons inside the FooterTemplate of RadComboBox. Please take a look into the following sample.

ASPX:

<telerik:RadComboBox ID="RadComboBox1" runat="server" >
 <ItemTemplate>
  <telerik:RadTreeView runat="server" ID="RadTreeView1" CheckBoxes="true" >
   <Nodes>
    ..................
   </Nodes>
  </telerik:RadTreeView>
 </ItemTemplate>
 <FooterTemplate>
  <asp:Button ID="OK" runat="server" Text="OK" onclick="OK_Click" />
  <asp:Button ID="CANCEL" runat="server" Text="CANCEL" onclick="CANCEL_Click" />
 </FooterTemplate>
</telerik:RadComboBox>

C#:

protected void OK_Click(object sender, EventArgs e)
  {
    RadTreeView rtv = RadComboBox1.Items[0].FindControl("RadTreeView1") as RadTreeView;
    string s = "";
    for (int i = 0; i < rtv.CheckedNodes.Count; i++)
      {
        if(i==0)
          {
            s=s+rtv.CheckedNodes[0].Text ;
          }
        else
          {
            s = s + "," + rtv.CheckedNodes[i].Text;
          }
      }
    RadComboBox1.EmptyMessage = s;
  }
protected void CANCEL_Click(object sender, EventArgs e)
  {
    RadTreeView rtv = RadComboBox1.Items[0].FindControl("RadTreeView1") as RadTreeView;
    rtv.UncheckAllNodes();
    RadComboBox1.EmptyMessage = "";
  }

Hope this helps.

Thanks,
Princy.