从 webmethod 返回 XML

发布于 2024-11-27 06:13:31 字数 881 浏览 1 评论 0原文

我正在使用 ajax PageMethod 来调用 asp.net webmethod。从那里我尝试将大量 XML 传递回回调 javascript 函数。

目前，我只是将 XML 转换为字符串并以该格式传递。但似乎如果字符串太长就会导致错误。

这是 VB：

<System.Web.Services.WebMethod()> _
Public Shared Function getXML() As String
   Dim strXML
   strXML=getLoadsOfXML().InnerXml;
   Return strXML
End Function

这是 javascript：

function loadGrid(){
    PageMethods.getXML(myCallback);
} 

//This function doesn't get called if strXML is too long
function myCallback(strXML){
    useXML(strXML);
}

这是错误：

Microsoft JScript 运行时错误：Sys.Net.WebServiceFailedException：服务器方法“getXML”失败并出现以下错误： System.InvalidOperationException--序列化期间出错或使用 JSON JavaScriptSerializer 进行反序列化。的长度字符串超出了 maxJsonLength 属性上设置的值。

所以我的问题是：是否有更好的方法将 XML 从 VB 传递到 javascript，或者允许大字符串无错误地传递？

原文

I am using an ajax PageMethod to call an asp.net webmethod. From there I'm trying to pass a lot of XML back to a callback javascript function.

Currently I just convert the XML into a string and pass it in that format. But it seems that if the string is too long it causes an error.

Here's the VB:

<System.Web.Services.WebMethod()> _
Public Shared Function getXML() As String
   Dim strXML
   strXML=getLoadsOfXML().InnerXml;
   Return strXML
End Function

Here's the javascript:

function loadGrid(){
    PageMethods.getXML(myCallback);
} 

//This function doesn't get called if strXML is too long
function myCallback(strXML){
    useXML(strXML);
}

Here's the error:

Microsoft JScript runtime error: Sys.Net.WebServiceFailedException:
The server method 'getXML' failed with the following error:
System.InvalidOperationException-- Error during serialization or
deserialization using the JSON JavaScriptSerializer. The length of the
string exceeds the value set on the maxJsonLength property.

So my question is: Is there a better way to pass the XML from VB to javascript, or a way to allow large strings to be passed without error?

分享到QQ

分享到微博