it means your xml is invalid, show your xml
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private const string filename = "Account.xml";
XmlDocument myDocument=new XmlDocument();
byte[] pixels = new byte[numPixels];
FileStream myStream=new FileStream("c:\\"+filename,FileMode.Open);
try
{
myDocument.Load(myStream);
} catch {}
myStream.Write(pixels,1,100000);
myStream.Close();xml文件如下:Account.xml
<?xml version="1.0"?>
<Account>
<Username>qieyj</Username>
<Password>0350</Password>
<Template>PAR1</Template>
</Account>
myDocument.LoadXML(myStream);
是
LoadXml
大小写错了
string s = reader.ReadToEnd();
myDocument.LoadXML(s);
private const string filename = "Account.xml";
XmlDocument myDocument=new XmlDocument();
byte[] pixels = new byte[numPixels];
FileStream myStream=new FileStream("c:\\"+filename,FileMode.Open);
try
{
myDocument.Load(myStream);
} catch {}
myStream.Write(pixels,1,100000);
myStream.Close();xml文件如下:Account.xml
<?xml version="1.0"?>
<Account>
<Username>qieyj</Username>
<Password>0350</Password>
<Template>PAR1</Template>
</Account>
然后再如下读:
MemoryStream output = new MemoryStream(pixels,1,100000);
StreamReader reader = new StreamReader(myStream);
string s = reader.ReadToEnd();
myDocument.LoadXML(s);
myStream.Write(pixels,1,100000);
???the following works for me (assume the xml file exists) string filename = "C:\\Account.xml";
XmlDocument myDocument=new XmlDocument();
FileStream myStream=new FileStream(filename ,FileMode.Open);
try
{
myDocument.Load(myStream);
} catch(Exception e)
{
Console.WriteLine(e.Message);
}
myDocument.Save(Console.Out);
myStream.Close(); string sXml = "<root>hello</root>";
myDocument=new XmlDocument();
myDocument.LoadXml(sXml);
myDocument.Save(Console.Out); MemoryStream output = new MemoryStream(System.Text.Encoding.Default.GetBytes(sXml));
myDocument=new XmlDocument();
myDocument.Load(output);
myDocument.Save(Console.Out);
真是搞不懂,你访问一个存在的xml文件,为什么要先读成byte[]流,然后再用一个XmlDocument对象来读我想你是不是要做这个事情
你要操作一个存在的xml文件,添加一个节点pixels值
如果是这样的话
你可以这种作
string filename = "C:\\Account.xml";
XmlDocument myDocument=new XmlDocument();
myDocument.Load( filename );
然后直接操作这个myDocument对象
--修改,添加节点
最后使用Save( filename );
不就万事大吉
writer.Formatting = Formatting.Indented;
//Write the XML delcaration
writer.WriteStartDocument();
//Write the ProcessingInstruction node
// String PItext="type='text/xsl' href='book.xsl'";
// writer.WriteProcessingInstruction("xml-stylesheet", PItext);
//Write the DocumentType node
// writer.WriteDocType("Account", null , null, "<!ENTITY h 'hardcover'>");
//Write a Comment node
// writer.WriteComment("sample XML");
//Write an element (this one is the root)
writer.WriteStartElement("Account");
//Write the genre attribute
// writer.WriteAttributeString("Username", t_username.Text.Trim());
//Write the ISBN attribute
// writer.WriteAttributeString("Password", t_password.Text.Trim());
//Write the title
writer.WriteElementString("Username", t_username.Text.Trim());
writer.WriteElementString("Password", t_password.Text.Trim());
//Write the style element
// writer.WriteStartElement("Password");
// writer.WriteEntityRef("h");
// writer.WriteEndElement();
//Write the price
writer.WriteElementString("Template", t_template.Text.Trim());
//Write CDATA
// writer.WriteCData("Prices 15% off!!");
//Write the close tag for the root element
writer.WriteEndElement();
writer.WriteEndDocument();
//Write the XML to file and close the writer
writer.Flush();
writer.Close();
int imageNum;
byte[] pixels = new byte[numPixels];
for(int i=0; i<numPixels; i++)
pixels[i] = (byte) i;
FileStream fs = new FileStream("c:\\Account.xml", FileMode.Create,FileAccess.Write, FileShare.None, 8192, false);
fs.Write(pixels, 0, pixels.Length);
fs.Close();