Ajax--WebService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!" οnclick="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

转载于:https://www.cnblogs.com/oneword/archive/2009/05/05/1449687.html