/// <summary>
/// write setting to app config
/// </summary>
/// <param name="cPath">path to config file</param>
/// <param name="location">app section</param>
/// <param name="name">setting</param>
/// <param name="newValue">new value</param>
public static void SetSetting(string cPath, string location, string name, string newValue)
{
//first check the cache
string lookup = location + ":" + name;
ProgramSettings ps = GetInstance();
string nodeName = string.Format(@"descendant::applicationSettings/{0}/setting[@name='{1}']/value",
location, name);
var doc = new XmlDocument();
string configPath;
if (cPath.Length > 0)
{
configPath = cPath;
}
else
{
Configuration c =
ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
configPath = c.FilePath;
}
doc.Load(configPath);
XmlNode node = doc.SelectSingleNode(nodeName);
if (node == null)
{
string parent = string.Format(@"descendant::applicationSettings/{0}", location);
XmlNode parentNode = doc.SelectSingleNode(parent);
if (parentNode != null)
{
XmlNode newNode = doc.CreateNode(XmlNodeType.Element, "setting", string.Empty);
XmlAttribute nameAttribute = doc.CreateAttribute("name");
nameAttribute.Value = name;
if (newNode.Attributes != null)
{
newNode.Attributes.Append(nameAttribute);
}
node = doc.CreateNode(XmlNodeType.Element, "value", string.Empty);
newNode.AppendChild(node);
parentNode.AppendChild(newNode);
}
}
if (node != null)
{
node.InnerText = newValue;
doc.Save(configPath);
if (ps._nvc.Get(lookup) != null)
{
ps._nvc.Remove(lookup);
}
ps._nvc.Set(lookup, newValue);
}
}
private static string GetNodeValue(ProgramSettings ps, string lookup, XmlDocument doc, string nodeName, string ret)
{
XmlNode node = doc.SelectSingleNode(nodeName);
if (node != null)
{
ret = node.InnerText;
ps._nvc.Set(lookup, ret);
}
return(ret);
}
/// <summary>
/// Get setting from custom app.config
/// </summary>
/// <param name="cPath">path to config file</param>
/// <param name="location">section name</param>
/// <param name="name">setting name</param>
/// <param name="defaultValue">default value</param>
/// <returns>setting value</returns>
public static string GetSetting(string cPath, string location, string name, string defaultValue)
{
string ret = string.Empty;
try
{
//first check the cache
string lookup = location + ":" + name;
ProgramSettings ps = GetInstance();
if (ps._nvc.Get(lookup) != null)
{
lock (LockObj)
ret = ps._nvc.Get(lookup);
}
else
{
lock (LockObj)
{
string configFile = string.Empty;
try
{
var doc = new XmlDocument();
configFile = LoadConfigFile(cPath, doc);
string nodeName =
string.Format(@"descendant::applicationSettings/{0}/setting[@name='{1}']/value",
location, name);
ret = GetNodeValue(ps, lookup, doc, nodeName, ret);
}
catch (Exception ex)
{
ExceptionHelper.HandleException(ex, string.Format("Can't find config file {0}", configFile));
throw;
}
}
}
}
catch (Exception ex)
{
ret = string.Empty;
ExceptionHelper.HandleException(ex);
if (string.IsNullOrEmpty(defaultValue))
{
throw;
}
}
if (string.IsNullOrEmpty(ret) && !string.IsNullOrEmpty(defaultValue))
{
ret = defaultValue;
}
return(ret);
}
private static ProgramSettings GetInstance()
{
try
{
lock (typeof(ProgramSettings))
{
if (_instance == null)
{
_instance = new ProgramSettings();
}
}
}
catch (Exception ex)
{
ExceptionHelper.HandleException(ex);
}
return(_instance);
}
private static ProgramSettings GetInstance()
{
try
{
lock (typeof (ProgramSettings))
{
if (_instance == null)
{
_instance = new ProgramSettings();
}
}
}
catch (Exception ex)
{
ExceptionHelper.HandleException(ex);
}
return _instance;
}
private static string GetNodeValue(ProgramSettings ps, string lookup, XmlDocument doc, string nodeName, string ret)
{
XmlNode node = doc.SelectSingleNode(nodeName);
if (node != null)
{
ret = node.InnerText;
ps._nvc.Set(lookup, ret);
}
return ret;
}
