private void Button2_Click(object sender, EventArgs e)
{
    string text = this.p.Text;
    string v = ConfigurationSettings.AppSettings["ConnectionString"];
    switch (v)
    {
        case null:
        case string.Empty:
            throw new ApplicationException("web.config中应该包含  <appSettings><add key=\"ConnectionString_da\" value=\"数据连接串\" /></appSettings> ");
    }
    int index = v.IndexOf("password=");
    int num2 = v.IndexOf(";", index);
    string str3 = v.Substring(index + 9, (num2 - index) - 9);
    text = "NMGrskssok3";
    v = v.Replace("password=" + str3, "password=" + cStr.Encrypting(text, this.PublicKey));
    this.SaveWeb("ConnectionString", v);
    this.SaveWeb("ConnectionString_da", v);
    base.Response.Write("<script>alert('密码修改成功!')</script>");
}

 

 this.PublicKey = "@(1Qz1)#";