C#： 中文和UNICODE字符转换方法 及仿安居客地图实现。。。错误 GMap2未定义 解决办法 VB 中文转为UNICODE字符

错误 GMap2未定义 解决办法      (关键在于：charset="utf-8" )

<script src="http://maps.google.com/maps?file=api&amp;v=2&amp;sensor=false&amp;key=ABQIAAAAnzgK6D9hdvlLyVMROdMgRxRvkvyC2uHS-ibWMJG7xp28q6sn4RSCVBqVh-Kb2lwBiDjnbXc4A9U_XQ" type="text/javascript" charset="utf-8"></script>

  ''/////*************************  VB  中文转为UNICODE字符
        ''//中文转为UNICODE字符
        ''Dim str As String = "新景花园"
        ''Dim outStr As String = ""
        ''Dim i As Integer = 0
        ''For i = 1 To str.Length
        ''    outStr = outStr + "\u" + Hex(AscW(Mid(str, i, 1))).ToString()
        ''Next i

context.Response.ContentType = "application/json";
        context.Response.Charset = "utf-8";
        string txt = "{\"50697\":[\"\u65b0\u666f\u5bb6\u56ed\",392,39.8957115,116.4256382]}";
        context.Response.Write(txt);



        //Response.Write("\u65b0\u666f\u5bb6\u56ed" + "<br>");
        //Response.Charset = "utf-8";

        //string str = "动网新闻";
        //string outStr = "";
        //if (!string.IsNullOrEmpty(str))
        //{
        //    for (int i = 0; i < str.Length; i++)
        //    {
        //        //将中文字符转为10进制整数，然后转为16进制unicode字符
        //        outStr += "\\u" + ((int)str[i]).ToString("x");
        //    }
        //}
        //Response.Write(outStr);
        //Response.End();


        //////中文转为UNICODE字符
        ////string str = "中文";
        ////string outStr = "";
        ////if (!string.IsNullOrEmpty(str))
        ////{
        ////    for (int i = 0; i < str.Length; i++)
        ////    {
        ////        //将中文字符转为10进制整数，然后转为16进制unicode字符
        ////        outStr += "\\u" + ((int)str[i]).ToString("x");
        ////    }
        ////}
        //////UNICODE字符转为中文
        ////string str = "\\u4e2d\\u6587";
        ////string outStr = "";
        ////if (!string.IsNullOrEmpty(str))
        ////{
        ////    string[] strlist = str.Replace("\\", "").Split('u');
        ////    try
        ////    {
        ////        for (int i = 1; i < strlist.Length; i++)
        ////        {
        ////            //将unicode字符转为10进制整数，然后转为char中文字符
        ////            outStr += (char)int.Parse(strlist[i], System.Globalization.NumberStyles.HexNumber);
        ////        }
        ////    }
        ////    catch (FormatException ex)
        ////    {
        ////        outStr = ex.Message;
        ////    }
        ////}

 仿安居客地图

 /Files/Fooo/haozuMap.rar