Have event fire whenever any changes made to textboxes, comboboxs, etc. inside form

Question

I\'m working with a C# WinForm. It has more than a dozen text boxes, combo boxes, and check boxes. The winform displays information that is retrieved from a database. There

Answer 1

You have to go through through the controls and attach change event to every control. This article discuss the similar situation.

private void AssignHandlersForControlCollection(
       Control.ControlCollection coll)
  {
      foreach (Control c in coll)
      {
          if (c is TextBox)
              (c as TextBox).TextChanged 
                += new EventHandler(SimpleDirtyTracker_TextChanged);

          if (c is CheckBox)
              (c as CheckBox).CheckedChanged 
                += new EventHandler(SimpleDirtyTracker_CheckedChanged);

          // ... apply for other desired input types similarly ...

          // recurively apply to inner collections
          if (c.HasChildren)
              AssignHandlersForControlCollection(c.Controls);
      }
  }