Looping through controls

[venerable bede]

How can I loop through controls on a form and find out what type they are.
I want to loop through controls on a webform and if they are visible textboxes change there value if NULL to "na".

Also

If I placed this code in a module or class how would the code know which page I was refering to.

[Memnoch1207]

just a quick sample...this is in C#.

foreach(x in base.Controls)
   if(x is Textbox) 
   {
      //do something
   }

[venerable bede]

The problem Im having is that I cant get to the text property of the control so I can change it.

[PT Exorcist]

Originally posted by Memnoch1207
just a quick sample...this is in C#.

foreach(x in base.Controls)
   if(x is Textbox) 
   {
      //do something
   }

actually ur code is wrong as the base class will not have any control in it

you have to loop thru all class controls..do it the following way:

public sub SetTextBoxes(ByRef WebPage pageRef)
for each ctrl as Control in pageRef.Controls)
'code (sorry i dont have vb.net here so i can say but try
'if (ctrl.gettype() = typeof("TextBox"))
'(CType(ctrl, TextBox)).Text = "na"
next
end function

anyways as i am no vb.net developer i might have some sintax errors

[The Phoenix]

Well, I'm not sure if this is what you need, but it might help a little.

Dim ctrl As Control
        For Each ctrl In Me.Controls
            If TypeOf ctrl Is TextBox Then
                If ctrl.visible = True Then
                   If ctrl.Text = Nothing Then
                       ctrl.text = "na"
                   End If
                End If
            End If
        Next