Question

I am currently translating a windows form application, written in VB6, to a webpage written in Visual Studio 2010.

In VB6 it is easy to find out which control has focus on the form using ‘.getFocus()’. I have come to the conclusion it is not that easy, if at all possible, in vb2008.

Is this possible to do?

Answer 1

In WinForms you can create a foreach loop like this and check if a specific control has focus:

foreach (Control item in this.Controls)
{
 if (item.Focused)
  //codes to handle the condition
}  

Or like spacemonkeyes said, use this.ActiveControl or VB’s version Me.ActiveControl

However for a webpage I think you have to use JavaScript. The document object has a property named ActiveElement which as far as I know, only IE supports this property:
document.ActiveElement
It returns a reference to the focused control.
To use it on the server side, you have to have a form which is submitted to the server or you could use Ajax to submit that particular control. Pretty complex codings are required.