tooltip for header

[Saran kumar]

if (e.Item is GridHeaderItem)
                {
                    GridHeaderItem headerItem = (GridHeaderItem)e.Item;
                    headerItem["CheckboxSelectColumn"].ToolTip = "Select all or Deselect";
                    headerItem["imgHeader"].ToolTip = "Action Past Due";
                    headerItem.Attributes["onmouseover"] = "this.style.background='#dde9ff'; this.style.fontWeight='normal';this.style.cursor='pointer'";
                    headerItem.Attributes["onmouseout"] = "this.style.background=''; this.style.fontWeight='';this.style.cursor=''";
                }

 hi im using the above code to display tool tip in the header section. but its is not geting insided the if loop. i need to do the mouse over color change too in that. please help. this same thing perfectly works for a data item.

[Princy]

Hello Saran,

If you have enabled sorting for the grid, then the header cells would contain linkbuttons. If so, you would have to set the tooltip for the link buttons as shown below:
c#:

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
  {
    if (e.Item is GridHeaderItem)
     {
       GridHeaderItem headerItem = (GridHeaderItem)e.Item;
       headerItem[columnUniqueName].Controls[0] as LinkButton).ToolTip = "Custom Text";
     }
  }

Also refer to the following document on how to set styles on hovering over header:
Set style on mouse over

Thanks
Princy.