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About Syed Rizwan Muhammad Rizvi
Expertise
I can answers questions regarding web based and desktop based programming in VB.Net. Which can include SOAP, XML, Custom Controls, COM Interoperability etc.

Experience
Have been working in this specific area for last 2 years previously I was a VB 6 Developer with experties in other languages as well. Total 10 years of programming experience.

 
   

You are here:  Experts > Computing/Technology > Basic > VB.NET > VB.Net question

Topic: VB.NET



Expert: Syed Rizwan Muhammad Rizvi
Date: 8/19/2006
Subject: VB.Net question

Question
Hi Syed Rizwan Muhammad Rizvi,

Thanks for your response. I didn't have the option of asking a follow up question so I senting a new one.  Went went I entered your code below:

       Dim cntl As Control

       For Each cntl In Me.Controls
           If TypeOf cntl Is TextBox Then
               cntl.Text = ""
           ElseIf TypeOf cntl Is ListBox Then
               cntl.items.clear()
               elseif()
           End If
       Next

I got the following error 'items' is not a member of 'System.Windows.Forms.Control' on this line of code:  cntl.items.clear()

Answer
that was the pseudo code, you were supposed to modify it to fit your needs, from the else if section you were to add more types of controls.

moreover, you need to create temp object variables for each Control type so it works.

e.g.

   Dim cntl As Control
   Dim txtBox as TextBox, lstBox as ListBox
      For Each cntl In Me.Controls
          If TypeOf cntl Is TextBox Then
              txtBox = cntl
              txtBox.Text = ""
          ElseIf TypeOf cntl Is ListBox Then
              lstBox= cntl
              lstBox.items.clear()
          'elseif ....
          End If
      Next  

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