[Solved] Grid_ HeaderContexMenu hide "Columns" element from the list cause error

[archimede]

Hi,
I'd like to show only Group and Ungroup  options on the headercontext menu of a RadGrid so i've done in this way

void HeaderContextMenu_ItemCreated(object sender, RadMenuEventArgs e)
       {
           switch (e.Item.Text)
           {
               case "Columns": e.Item.Visible = false;break;
               case "Sort Ascending": e.Item.Visible = false; break;
               case "Sort Descending": e.Item.Visible = false; break;
               case "Clear Descending": e.Item.Visible = false; break;
               case "Clear Sorting": e.Item.Visible = false; break;
                      }
       }

If i leave the "element "Columns visible" it works fine, but if i putcase "Columns": e.Item.Visible = false;break;  i get this error:
Microsoft JScript runtime error: 'findItemByValue(...)' is null or not an object

What is the problem of  hiding the item "Columns" of the context mennu ?

Thank You !!

[Shinu]

Hello Archimede,

Try the following code snippet to show only Group and Ungroup options on the HeaderContext menu.
C#:

protected void Page_Load(object sender, EventArgs e)
{
 RadGrid1.HeaderContextMenu.ItemCreated += new RadMenuEventHandler(HeaderContextMenu_ItemCreated);
}
void HeaderContextMenu_ItemCreated(object sender, RadMenuEventArgs e)
{
    if (e.Item.Text == "Columns")
    {
        e.Item.Style.Add("display", "none");
        (sender as RadContextMenu).Items[e.Item.Index - 1].Remove();
    }
    if (e.Item.Text == "Filter")
    {
        e.Item.Style.Add("display", "none");
        (sender as RadContextMenu).Items[e.Item.Index - 1].Remove();
    }
}

Thanks,
Shinu.

[archimede]

Hi,
Thanks for your answer, It works !!
I just made a little modified, i only use e.Item.Style.Add("display", "none");, because with .."remove" .. when i click on Group by, the element Ungroup disapear.

Thanks again !!.

[Iana Tsolova]

Hello Archimede,

Please find the attached sample and see if it works for your case.

All the best,
Iana Tsolova
the Telerik team