單 - XDocument.Load失敗LoadOptions.PreserveWhitespace

Question

使用單聲道版本2.10.5，下面的代碼無法在任何XML文檔：

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.IO; 
using System.Xml.Linq; 

namespace TestXDocument 
{ 
    class MainClass 
    { 
     public static void Main (string[] args) 
     { 
      Stream s = File.Open("Settings.xml", FileMode.Open); 
      XDocument d = XDocument.Load(s, LoadOptions.PreserveWhitespace); 
      s.Close(); 
      d.Save("Settings.xml"); 
     } 
    } 
} 

如果XDocument.Load使用LoadOptions.PreserveWhitespace這只是發生。有關如何解決此問題或解決問題的任何想法？

在Linux Mint 12和Ubuntu 11.10上測試。

這裏的例外：

Unhandled Exception: System.InvalidOperationException: This XmlWriter does not accept Text at this state Prolog. 
    at System.Xml.XmlTextWriter.ShiftStateContent (System.String occured, Boolean allowAttribute) [0x00000] in <filename unknown>:0 
    at System.Xml.XmlTextWriter.WriteString (System.String text) [0x00000] in <filename unknown>:0 
    at System.Xml.DefaultXmlWriter.WriteString (System.String text) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XText.WriteTo (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.WriteTo (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.String filename, SaveOptions options) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.String filename) [0x00000] in <filename unknown>:0 
    at TestXDocument.MainClass.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: This XmlWriter does not accept Text at this state Prolog. 
    at System.Xml.XmlTextWriter.ShiftStateContent (System.String occured, Boolean allowAttribute) [0x00000] in <filename unknown>:0 
    at System.Xml.XmlTextWriter.WriteString (System.String text) [0x00000] in <filename unknown>:0 
    at System.Xml.DefaultXmlWriter.WriteString (System.String text) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XText.WriteTo (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.WriteTo (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.Xml.XmlWriter w) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.String filename, SaveOptions options) [0x00000] in <filename unknown>:0 
    at System.Xml.Linq.XDocument.Save (System.String filename) [0x00000] in <filename unknown>:0 
    at TestXDocument.MainClass.Main (System.String[] args) [0x00000] in <filename unknown>:0 

Answer 1

我能複製同樣的問題，在這兩個代碼示例在Ubuntu 11.10。正如你所說，在Windows平臺上沒有問題。看來，Mono運行時在XDocument的Save方法中存在某些錯誤，從而導致意外錯誤。我想將此問題報告給Mono運行團隊以獲取軟件補丁。

然而，可能的解決方法我把我在這裏，

d.Root.Save("Settings1.xml"); 

看來，在的XElement保存方法沒有任何問題，因爲我們的XDocument遇到。