Public Sub DisableActiveFormControls()
    ' Create an instance of a form and assign it the currently active form.
    Dim currentForm As Form = Form.ActiveForm

    ' Loop through all the controls on the active form.
    Dim i As Integer
    For i = 0 To currentForm.Controls.Count - 1
        ' Disable each control in the active form's control collection.
        currentForm.Controls(i).Enabled = False
    Next i
End Sub 'DisableActiveFormControls

public void DisableActiveFormControls()
 {
    // Create an instance of a form and assign it the currently active form.
    Form currentForm = Form.ActiveForm;

    // Loop through all the controls on the active form.
    for (int i = 0; i < currentForm.Controls.Count; i++)
    {
       // Disable each control in the active form's control collection.
       currentForm.Controls[i].Enabled = false;
    }
 }
    

   void DisableActiveFormControls()
   {

      // Create an instance of a form and assign it the currently active form.
      Form^ currentForm = Form::ActiveForm;

      // Loop through all the controls on the active form.
      for ( int i = 0; i < currentForm->Controls->Count; i++ )
      {

         // Disable each control in the active form's control collection.
         currentForm->Controls[ i ]->Enabled = false;

      }
   }