c# RichTextBox password *****

c# RichTextBox password *****

class )
using System;
using System.Windows.Forms;

class RichPassword : RichTextBox
{
    protected override CreateParams CreateParams
    {
        get
        {
            // Turn on ES_PASSWORD
            var cp = base.CreateParams;
            cp.Style |= 0x20;
            return cp;
        }
    }
}

-------------------------------------------------------------------

//this.rtPw = new System.Windows.Forms.RichTextBox();
this.rtPw = new RichPassword();

...

this.rtPw.Location = new Point(650, 178);
this.rtPw.Width = 180;
this.rtPw.Height = 31;