关于app.config不能即时保存读取的解决方案

public void saveValue( string Name, string Value)
{
     ConfigurationManager.AppSettings.Set(Name, Value);
     Configuration config = ConfigurationManager.OpenExeConfiguration(Application.ExecutablePath);
     config.AppSettings.Settings[Name].Value = Value;
     config.Save(ConfigurationSaveMode.Modified);
     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。

所以我们换了一种方式,以xml的方式进行保存及读取。直接上代码。

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public static void SetAppConfig( string appKey, string appValue)
{
     XmlDocument xDoc = new XmlDocument();
     xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config" );
 
     var xNode = xDoc.SelectSingleNode( "//appSettings" );
 
     var xElem = (XmlElement)xNode.SelectSingleNode( "//add[@key='" + appKey + "']" );
     if (xElem != null ) xElem.SetAttribute( "value" , appValue);
     else
     {
         var xNewElem = xDoc.CreateElement( "add" );
         xNewElem.SetAttribute( "key" , appKey);
         xNewElem.SetAttribute( "value" , appValue);
         xNode.AppendChild(xNewElem);
     }
     xDoc.Save(System.Windows.Forms.Application.ExecutablePath + ".config" );
}
 
public static string GetAppConfig( string appKey)
{
     XmlDocument xDoc = new XmlDocument();
     xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config" );
 
     var xNode = xDoc.SelectSingleNode( "//appSettings" );
 
     var xElem = (XmlElement)xNode.SelectSingleNode( "//add[@key='" + appKey + "']" );
 
     if (xElem != null )
     {
         return xElem.Attributes[ "value" ].Value;
     }
     return string .Empty;
}

使用方式

设置

SetAppConfig("SourceDBIP", txtSourceAddress.Text.Trim());

读取

Setting.GetAppConfig("SourceDBIP")

转载自https://www.cnblogs.com/homezzm/p/3580079.html

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