AjaxWebService返回错误信息

Ajax通过序列化是可以返回DataTable的,此处没有进行任何处理,所以会导致报错.

WebService:

    [WebMethod]
    public DataTable GetDataTable(string tableName)
    {
        // 设定DataTable的名称
        DataTable table = new DataTable(tableName);

        // 为该DataTable添加两列
        table.Columns.Add(new DataColumn("Id", typeof(int)));
        table.Columns.Add(new DataColumn("Name", typeof(string)));

        // 添加5行
        for (int i = 0; i < 5; ++i)
        {
            DataRow newRow = table.NewRow();
            newRow["Id"] = i;
            newRow["Name"] = string.Format("name {0}", i);

            table.Rows.Add(newRow);
        }

        return table;
    }

ScriptManager:

    <asp:ScriptManager ID="sm" runat="server">
    <Services>
        <asp:ServiceReference Path="~/WebService2.asmx" InlineScript="true" />
    </Services>
    </asp:ScriptManager>

页面控件:

    <input type="button" value="Click Me!" onclick="btn_click()" id="btn" />
    <div id="result">
    
    </div>

Js:

    <script type="text/javascript">
        function btn_click(){
            WebService2.GetDataTable("1",onSuccessed,onFailed);
        }
        
        function onSuccessed(result){
        }
        
        function onFailed(error){
            $get("result").innerHTML="Error:"+error.get_message()+"<br/>ExceptionType:"+
                                     error.get_exceptionType()+"<br/>StatusCode:"+
                                     error.get_statusCode()+"<br/>StackTrace:"+
                                     error.get_stackTrace()+"<br/>TimedOut:"+
                                     error.get_timedOut();
        }
        
    </script>

结果:

debugger:

System.Net.WebServiceError成员:

注意:

访问这些属性时,前面需要加get