如何立即保存app.config
摘自 http://bbs.csdn.net/topics/320041030
public void saveValue(string Name, string Value)
{//ConfigurationManager.RefreshSection(Name);
ConfigurationManager.AppSettings.Set(Name, Value);
Configuration config = ConfigurationManager.OpenExeConfiguration(Application.ExecutablePath);
config.AppSettings.Settings[Name].Value = Value;
config.Save(ConfigurationSaveMode.Modified);
//config.fl
config = null;
}
用上面的函数总是等到程序运行结束，才将数据保存进去，哪位知道怎么立即保存？
无法立即保存,这是app.config的机制,在程序运行结束后才会更新至app.config
private static string _appconfig = null;
/// <summary>
/// 获取或设置需要配置或读取的App.Config的文件名，若赋值为空（或未曾赋值）则下次读取该属性将取得调用方的EXE的默认config，否则返回上次设置的值。
/// </summary>
public static string AppConfig
{
get
{
if (_appconfig == null)
{
Type t = typeof(System.Configuration.ConfigurationManager).Assembly.GetType("System.Configuration.ClientConfigurationHost");
object cfghst = Activator.CreateInstance(t, true);
PropertyInfo pi = t.GetProperty("ConfigPaths", BindingFlags.Instance | BindingFlags.NonPublic);
object cfgpath = pi.GetValue(cfghst, null);
Type t1 = typeof(System.Configuration.ConfigurationManager).Assembly.GetType("System.Configuration.ClientConfigPaths");
pi = t1.GetProperty("ApplicationConfigUri", BindingFlags.Instance | BindingFlags.NonPublic);
string path = (string)pi.GetValue(cfgpath, null);
if (string.IsNullOrEmpty(path))
_appconfig = string.Empty;
else
_appconfig = path.Replace(".vshost.", ".");
}
return _appconfig;
}
set
{
_appconfig = value;
}
}
/// <summary>
/// 提供直接修改AppConfig内配置值得方法
/// </summary>
/// <param name="key">键</param>
/// <param name="value">值</param>
public static void SetSettingToAppConfig(string key, string value)
{
if (string.IsNullOrEmpty(key))
{
throw new Exception("AppConfig的配置中，key不能为空");
}
else
{
key = key.Trim();
}
if (string.IsNullOrEmpty(value))
value = "";
else
value = value.Trim();
if (!File.Exists(AppConfig))
{
throw new DirectoryNotFoundException();
}
File.SetAttributes(AppConfig, FileAttributes.Normal);
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(AppConfig);
XmlNodeList xmllst = xmldoc.SelectNodes("/configuration/appSettings/add");
if (xmldoc.SelectSingleNode("/configuration/appSettings") == null)
{
XmlNode n2 = xmldoc.CreateNode("element", "appSettings", "");
n2.InnerXml = "<add key=\"" + key + "\" value=\"" + value + "\"/>";
xmldoc.SelectSingleNode("/configuration").AppendChild(n2);
xmldoc.Save(AppConfig);
}
else if (xmllst.Count == 0)
{
XmlNode n2 = xmldoc.CreateNode("element", "add", "");
XmlAttribute xa = xmldoc.CreateAttribute("key");
xa.Value = key;
n2.Attributes.Append(xa);
xa = xmldoc.CreateAttribute("value");
xa.Value = value;
n2.Attributes.Append(xa);
xmldoc.SelectSingleNode("/configuration/appSettings").AppendChild(n2);
xmldoc.Save(AppConfig);
}
else
{
bool existed = false;
foreach (XmlNode n1 in xmllst)
{
if (n1.Attributes["key"].Value.ToUpper() == key.ToUpper())
{
n1.Attributes["value"].Value = value;
xmldoc.Save(AppConfig);
existed = true;
break;
}
}
if (!existed)
{
XmlNode xmlnd = xmldoc.SelectSingleNode("/configuration/appSettings");
XmlNode n2 = xmldoc.CreateNode("element", "add", "");
XmlAttribute xa = xmldoc.CreateAttribute("key");
xa.Value = key;
n2.Attributes.Append(xa);
xa = xmldoc.CreateAttribute("value");
xa.Value = value;
n2.Attributes.Append(xa);
xmlnd.AppendChild(n2);
xmldoc.Save(AppConfig);
}
}
ConfigurationManager.RefreshSection("appSettings");
}