C#中 XML 讀寫檔案的方法（xmlreader,xmlwriter）
阿新 • • 發佈：2019-02-13
class Test
{
public static void Main(string[] args)
{
string path = "d:\\books.xml";
XmlReader reader = null;
try
{
// 建立XmlReaderSettings物件
XmlReaderSettings settings = new XmlReaderSettings();
// 設定XmlReaderSettings物件的屬性
settings.ProhibitDtd = false;
// 使用XmlReaderSettings物件來建立XmlReader物件
reader = XmlReader.Create(path, settings);
ReadXml(reader);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (reader != null)
reader.Close();
}
}
private static void ReadXml(XmlReader reader)
{
try
{
// 解析檔案，並顯示每一個節點
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
if (reader.IsEmptyElement) // 空元素？
{
Console.WriteLine("<{0}/>", reader.Name);
}
else
{
Console.Write("<{0}", reader.Name);
if (reader.HasAttributes) // 屬性？
{
while (reader.MoveToNextAttribute())
{
Console.Write(" {0}=\"{1}\"", reader.Name, reader.Value);
}
}
Console.WriteLine(">", reader.Name);
}
break;
case XmlNodeType.Text:
Console.WriteLine(reader.Value);
break;
case XmlNodeType.CDATA:
Console.WriteLine("<![CDATA[{0}]]>", reader.Value);
break;
case XmlNodeType.ProcessingInstruction:
Console.WriteLine("<?{0} {1}?>", reader.Name, reader.Value);
break;
case XmlNodeType.Comment:
Console.WriteLine("<!--{0}-->", reader.Value);
break;
case XmlNodeType.XmlDeclaration:
Console.WriteLine("<?xml version='1.0'?>");
break;
case XmlNodeType.Document:
break;
case XmlNodeType.DocumentType:
Console.WriteLine("<!DOCTYPE {0} [{1}]>", reader.Name, reader.Value);
break;
case XmlNodeType.EntityReference:
Console.WriteLine(reader.Name);
break;
case XmlNodeType.EndElement:
Console.WriteLine("</{0}>", reader.Name);
break;
}
}
}
catch (XmlException ex)
{
Console.WriteLine(ex.Message);
}
}
}
{
public static void Main(string[] args)
{
string path = "d:\\books.xml";
XmlReader reader = null;
try
{
// 建立XmlReaderSettings物件
XmlReaderSettings settings = new XmlReaderSettings();
// 設定XmlReaderSettings物件的屬性
settings.ProhibitDtd = false;
// 使用XmlReaderSettings物件來建立XmlReader物件
reader = XmlReader.Create(path, settings);
ReadXml(reader);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (reader != null)
reader.Close();
}
}
private static void ReadXml(XmlReader reader)
{
try
{
// 解析檔案，並顯示每一個節點
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
if (reader.IsEmptyElement) // 空元素？
{
Console.WriteLine("<{0}/>", reader.Name);
}
else
{
Console.Write("<{0}", reader.Name);
if (reader.HasAttributes) // 屬性？
{
while (reader.MoveToNextAttribute())
{
Console.Write(" {0}=\"{1}\"", reader.Name, reader.Value);
}
}
Console.WriteLine(">", reader.Name);
}
break;
case XmlNodeType.Text:
Console.WriteLine(reader.Value);
break;
case XmlNodeType.CDATA:
Console.WriteLine("<![CDATA[{0}]]>", reader.Value);
break;
case XmlNodeType.ProcessingInstruction:
Console.WriteLine("<?{0} {1}?>", reader.Name, reader.Value);
break;
case XmlNodeType.Comment:
Console.WriteLine("<!--{0}-->", reader.Value);
break;
case XmlNodeType.XmlDeclaration:
Console.WriteLine("<?xml version='1.0'?>");
break;
case XmlNodeType.Document:
break;
case XmlNodeType.DocumentType:
Console.WriteLine("<!DOCTYPE {0} [{1}]>", reader.Name, reader.Value);
break;
case XmlNodeType.EntityReference:
Console.WriteLine(reader.Name);
break;
case XmlNodeType.EndElement:
Console.WriteLine("</{0}>", reader.Name);
break;
}
}
}
catch (XmlException ex)
{
Console.WriteLine(ex.Message);
}
}
}