Dotnet总结（4）--xml读写
类别: ASP.NET教程 
读xml,
public static string ReadXMLConfig(string strFileName, string sKey)
{
// string strFileName = \"Brand.exe.config\";
XmlDocument oXmlDocument = new XmlDocument();
string strReturn=\"\";
try
{
oXmlDocument.Load(Application.StartupPath+\"//\"+strFileName);
XmlNodeList oXmlNodeList = oXmlDocument.DocumentElement.ChildNodes;
foreach (XmlElement oXmlElement in oXmlNodeList)
{
if (oXmlElement.Name.ToLower() == \"appsettings\")
{
XmlNodeList _node = oXmlElement.ChildNodes;
if (_node.Count > 0)
{
foreach (XmlElement _el in _node)
{
if (_el.Attributes[\"key\"].InnerXml.ToLower() == sKey.ToLower())
{
strReturn = _el.Attributes[\"value\"].Value;
break;
}
}
}
}
}
}
catch (Exception exp)
{
if (sKey.ToLower() == \"dsn\")
{
strReturn = \"Connect Timeout=5;server=localhost;database=Brand;uid=sa;pwd=\";
}
XmlTextWriter oXmlTextWriter = new XmlTextWriter(strFileName, new System.Text.UTF8Encoding());
oXmlTextWriter.WriteStartDocument();
oXmlTextWriter.WriteStartElement(\"configuration\");
oXmlTextWriter.WriteStartElement(\"appSettings\");
oXmlTextWriter.WriteStartElement(\"add\");
oXmlTextWriter.WriteAttributeString(\"key\", sKey);
oXmlTextWriter.WriteAttributeString(\"value\", strReturn);
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndDocument();
oXmlTextWriter.Close();
}
return strReturn;
}
// 写
private string WriteWebConfig(string sKey, string sValue)
{
string strFileName = \"Brand.exe.config\";
XmlDocument oXmlDocument = new XmlDocument();
try
{
oXmlDocument.Load(strFileName);
XmlNodeList oXmlNodeList = oXmlDocument.DocumentElement.ChildNodes;
foreach (XmlElement oXmlElement in oXmlNodeList)
{
if (oXmlElement.Name.ToLower() == \"appsettings\")
{
XmlNodeList _node = oXmlElement.ChildNodes;
if (_node.Count > 0)
{
foreach (XmlElement _el in _node)
{
if (_el.Attributes[\"key\"].InnerXml.ToLower() == sKey)
{
_el.Attributes[\"value\"].Value = sValue;
break;
}
}
}
}
}
}
catch
{
return \"\";
}
oXmlDocument.Save(strFileName);
return sValue;
}
public static string ReadXMLConfig(string strFileName, string sKey)
{
// string strFileName = \"Brand.exe.config\";
XmlDocument oXmlDocument = new XmlDocument();
string strReturn=\"\";
try
{
oXmlDocument.Load(Application.StartupPath+\"//\"+strFileName);
XmlNodeList oXmlNodeList = oXmlDocument.DocumentElement.ChildNodes;
foreach (XmlElement oXmlElement in oXmlNodeList)
{
if (oXmlElement.Name.ToLower() == \"appsettings\")
{
XmlNodeList _node = oXmlElement.ChildNodes;
if (_node.Count > 0)
{
foreach (XmlElement _el in _node)
{
if (_el.Attributes[\"key\"].InnerXml.ToLower() == sKey.ToLower())
{
strReturn = _el.Attributes[\"value\"].Value;
break;
}
}
}
}
}
}
catch (Exception exp)
{
if (sKey.ToLower() == \"dsn\")
{
strReturn = \"Connect Timeout=5;server=localhost;database=Brand;uid=sa;pwd=\";
}
XmlTextWriter oXmlTextWriter = new XmlTextWriter(strFileName, new System.Text.UTF8Encoding());
oXmlTextWriter.WriteStartDocument();
oXmlTextWriter.WriteStartElement(\"configuration\");
oXmlTextWriter.WriteStartElement(\"appSettings\");
oXmlTextWriter.WriteStartElement(\"add\");
oXmlTextWriter.WriteAttributeString(\"key\", sKey);
oXmlTextWriter.WriteAttributeString(\"value\", strReturn);
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndElement();
oXmlTextWriter.WriteEndDocument();
oXmlTextWriter.Close();
}
return strReturn;
}
// 写
private string WriteWebConfig(string sKey, string sValue)
{
string strFileName = \"Brand.exe.config\";
XmlDocument oXmlDocument = new XmlDocument();
try
{
oXmlDocument.Load(strFileName);
XmlNodeList oXmlNodeList = oXmlDocument.DocumentElement.ChildNodes;
foreach (XmlElement oXmlElement in oXmlNodeList)
{
if (oXmlElement.Name.ToLower() == \"appsettings\")
{
XmlNodeList _node = oXmlElement.ChildNodes;
if (_node.Count > 0)
{
foreach (XmlElement _el in _node)
{
if (_el.Attributes[\"key\"].InnerXml.ToLower() == sKey)
{
_el.Attributes[\"value\"].Value = sValue;
break;
}
}
}
}
}
}
catch
{
return \"\";
}
oXmlDocument.Save(strFileName);
return sValue;
}
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