Dotnet总结（4）--xml读写
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;
}
