AerolineaFrba.Consulta_Millas.Form1.txtDni_TextChanged C# (CSharp) Method

private txtDni_TextChanged ( object sender, EventArgs e ) : void
sender	object
e	System.EventArgs
return	void

        private void txtDni_TextChanged(object sender, EventArgs e)
        {
            this.button3.Enabled = false;
        }

Form1