xml问题？

Question

如果没有xml文件的话，怎么创建一个全新的xml，用流写的怎么不能用？

Answer 1

xml本来就是文本组成，你可以当它是文本，生成办法很多，不过还是建议，通过System.Xml下提供的xml操作类去生成

Answer 2

文本流怎么不能用？RSS就可以～

Answer 3

能给个例子吗，我的创建完以后老是打开出错
System.IO.FileStream xmlFileStream = new System.IO.FileStream(mXmlFileName, System.IO.FileMode.Create);//创建Writer文本流
System.Xml.XmlTextWriter xmlWriter = new System.Xml.XmlTextWriter(xmlFileStream, System.Text.Encoding.Default);//写出xml标题头
xmlWriter.WriteProcessingInstruction("xml", "version=\"1.0\" encoding=\"Gb2312\"");

Answer 4

装MSDN了吗？看看这里..ms-help://MS.MSDNQTR.v80.chs/MS.MSDN.v80/MS.VisualStudio.v80.chs/WD_XML/html/b4d369d2-590f-4255-ae1e-107f1f0d3500.htm

Answer 5

System.IO.FileStream xmlFileStream = new System.IO.FileStream(mXmlFileName, System.IO.FileMode.Create);
            ////创建Writer文本流
            System.Xml.XmlTextWriter xmlWriter = new System.Xml.XmlTextWriter(xmlFileStream, System.Text.Encoding.Default);
            //////写出xml标题头            xmlWriter.WriteStartDocument(true);
           
            xmlWriter.WriteStartAttribute("xmlns", null, "http://www.w3.org/2000/10/XMLSchema");
            xmlWriter.WriteEndAttribute();
            xmlWriter.WriteAttributeString("xmlns", "po", null, "http://contoso.com/po");
            xmlWriter.WriteEndAttribute();
            xmlWriter.WriteStartElement("DataSetProjects", "11", "http://passport.kubao.com");
            MessageBox.Show("ok");
            string fileName=mXmlFileName;
看看是哪错了？老出错报错为：处于状态 Prolog 的标记 StartAttribute 将导致无效的 XML 文档。

Answer 6

for example: FileStream xmlFileStream = new FileStream(@"C:\test.xml", FileMode.Create);
            XmlTextWriter writer = new XmlTextWriter(xmlFileStream, Encoding.Default);
            writer.Formatting = Formatting.Indented;
            writer.WriteStartDocument(true);
            writer.WriteStartElement("bookstore");
            writer.WriteStartElement("book");
            string prefix = writer.LookupPrefix("urn:samples");
            writer.WriteStartAttribute(prefix, "ISBN", "urn:samples");
            writer.WriteString("1-861003-78");
            writer.WriteEndAttribute();
            writer.WriteStartElement("title");
            writer.WriteString("The Handmaid's Tale");
            writer.WriteEndElement();
            writer.WriteElementString("price", "19.95");
            writer.WriteStartElement(prefix, "style", "urn:samples");
            writer.WriteString("hardcover");
            writer.WriteEndElement();
            writer.WriteEndElement();
            writer.WriteEndElement();
            writer.Flush();
            writer.Close();写出的xml如下:<?xml version="1.0" encoding="gb2312" standalone="yes"?>
<bookstore>
  <book d2p1:ISBN="1-861003-78" xmlns:d2p1="urn:samples">
    <title>The Handmaid's Tale</title>
    <price>19.95</price>
    <d2p1:style>hardcover</d2p1:style>
  </book>
</bookstore>

Answer 7

TO:xmlWriter.WriteStartDocument(true);
           
            xmlWriter.WriteStartAttribute("xmlns", null, "http://www.w3.org/2000/10/XMLSchema");改成类似下面的:
writer.WriteStartDocument(true);
            writer.WriteStartElement("bookstore");
            writer.WriteAttributeString("xmlns", null, "http://www.w3.org/2000/10/XMLSchema");