textboxes

Use the controls collection for the form; for example, with five textboxes, this will set all of the text properties to "Ziglofrock", then will find the textbox named textBox3 and set its text property to "Bagette", and then it will find the textbox named textBox4 and disable it.

foreach (Control c in this.Controls)

{

if (c.GetType().ToString() == "System.Windows.Forms.TextBox")

      {

            ((System.Windows.Forms.TextBox)(c)).Text = "Ziglofrock";

 

           if(((System.Windows.Forms.TextBox)(c)).Name == "textBox3")

             ((System.Windows.Forms.TextBox)(c)).Text = "Bagette";

 

           if (((System.Windows.Forms.TextBox)(c)).Name == "textBox4")

              ((System.Windows.Forms.TextBox)(c)).Enabled = false;

      }

}