clearing all textboxes in a tabbed form

????!

You can do the same sort of thing with CheckBoxes, Phil, but the reason why your code doesn't work is because the Control class doesn't have a Checked property. You therefore need to cast it to a CheckBox first as follows:

      foreach (TabPage tbpage in this.tabControl1.TabPages)
      {
          foreach (Control c in tbpage.Controls)
          {
             if (c is CheckBox)
             {
                 ((CheckBox)c).Checked  =  false ;
             }
          }
      }

Before, we didn't need the cast because the Control class does have a virtual Text property which the TextBox class overrides.

thats great, thanks.

can you do they same with check boxes (unckeck them) i have tried replacing

if (c is TextBox)
                    {
                        c.Text = "";
                    }

with

if (c is CheckBox)
                    {
                        c.Checked = false;
                    }

and it doesn;t work!!

Try this:

      foreach (TabPage tbpage in this.tabControl1.TabPages)
      {
          foreach (Control c in tbpage.Controls)
          {
             if (c is TextBox)
             {
                 c.Text = "";
             }
          }
      }