ASP.NET 登陆3次之后提示秘密不对并且退出窗体

    protected void Lbtn_Click( object sender, EventArgs e )
    {
        string userName = this.TextUserName.Text;
        string userPwd = this.TextPwd.Text;
        userPwd = this.TextNPwd.Text;
        userTable = BLLuser.GetData( );

        if ( userTable != null && userTable.Rows.Count >= 1 )
        {
            if ( TextUserName.Text.Trim( ) == userTable.Rows[ 0 ][ "UserName" ].ToString( ) &&
                TextPwd.Text.Trim( ) == userTable.Rows[ 0 ][ "UserPwd" ].ToString( ) )
            {

                Response.Redirect( "Default.aspx" );
            }
            else
            {
                logFailCount++;
                if ( logFailCount >= 3 )
                {

                    Response.Write( "<script> window.opener=null;window.close(); </script>" );
                }

                else
                    Response.Write( "密码不对" );
            }
        }
    }