ASP.NET

<div id="progress" style="visibility:hidden">Please wait...</div>

<input type="button" onclick="showProgress()"/>

function showProgress()
{
 $("#progress").show();
}

buffering83 wrote:

If you know site which explain simeple way.

If Not IsPostBack Then
	'BindCombobox here
End If

Dim listA, listB, listC As New List(Of Integer)
       Dim i As Integer

       listA.Add(115)
       listA.Add(100)
       listA.Add(150)

       listB.Add(115)
       listB.Add(100)

       For i = 0 To listA.Count - 1
           If (listB.Contains(listA(i))) Then
               listC.Add(listA(i))
           End If
       Next

       For i = 0 To listC.Count - 1
           Debug.Print("The following items are common to both lists: " & CStr(listC(i)))
       Next