Eventhandler覆盖？

void AccountChangedHandler(object sender, EventArgs e)
{
   string n = ((TextBox)sender).Name;
   string t = ((TextBox)sender).Text;
   // or instead of cast
   TextBox tb = sender as TextBox; // if sender is another type, tb is null
   if(tb != null)
   {
     string n = tb.Name;
     string t = tb.Text;
   }
}

你也可以尝试使用

foreach (Control c in this.Controls)
{
 c.TextChanged += new EventHandler(AccountChangedHandler);
}