XmlWriter OutOfMemoryException

Question

当我将非常大的字符串数据(100 Mb)保存到Xml时，内存异常非常奇怪。有人对发生什么事有什么想法吗？我只使用2.0框架。

Exception Stack:

System.OutOfMemoryException was unhandled
Message=Exception of type 'System.OutOfMemoryException' was thrown.
Source=mscorlib
StackTrace:

at System.IO.MemoryStream.set_Capacity(Int32 value)
at System.IO.MemoryStream.EnsureCapacity(Int32 value)
at System.IO.MemoryStream.Write(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.StreamWriter.Flush(Boolean flushStream, Boolean flushEncoder)
at System.IO.StreamWriter.Write(Char value)
at System.Xml.XmlTextWriter.InternalWriteEndElement(Boolean longFormat)
at System.Xml.XmlTextWriter.WriteEndElement()
at System.Xml.XmlWriter.WriteElementString(String localName, String ns, String 

SampleCode:

StreamWriter streamWriter = new StreamWriter( stream );
XmlTextWriter textWriter = new XmlTextWriter(streamWriter);
XmlWriter writer = textWriter;
writer.WriteStartDocument( true );

Answer 1

虽然您的代码没有显示这一点，但您可能不会使用“使用”正确地打开和关闭XMLWriter流。如果您真的想写入内存，请传入一个StringBuilder。试试这个：-

using System;
using System.Text;
using System.Xml;
public class Test {
    static void Main()
    { 
        XmlWriterSettings settings = new XmlWriterSettings();
        StringBuilder builder = new StringBuilder();
        using (XmlWriter writer = XmlWriter.Create(builder, settings))
        {
            writer.WriteStartDocument();
            writer.WriteStartElement("root");
            writer.WriteStartElement("element");
            writer.WriteString("content");
            writer.WriteEndElement();
            writer.WriteEndElement();
            writer.WriteEndDocument();
            writer.Flush();
        }
        Console.WriteLine(builder);
}

}