Keep password textbox value during postback asp.net

In this article, I will explain how to keep password & Retype password textbox value during postback in asp.net

 protected void Page_Load(object sender, EventArgs e)
    {
       if (!(String.IsNullOrEmpty(txtPassword.Text.Trim())))
        {
            txtPassword.Attributes["value"] = txtPassword.Text;
        }
        if (!(String.IsNullOrEmpty(txtRePassword.Text.Trim())))
        {
            txtRePassword.Attributes["value"] = txtRePassword.Text;
        }
   }

Hope freshers will find it helpful :)