c#中配置文件(app.config)的使用

//open app.config

Configuration cfnData = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

        

//add app settings

cfnData.AppSettings.Settings.Add("1","0");

//remove settings

cfnData.AppSettings.Settings.Remove("1");

//save app settings

cfnData.Save(ConfigurationSaveMode.Modified);

//check whether app.config is null

string [] strName =ConfigurationManager.AppSettings.AllKeys;

            if (strName.Length !=0)

            {

            }