修改WPF中connectionString[通俗易懂]

public void EditConfig(string connstr)
{
    XmlDocument xml = new XmlDocument();
    string strFileName = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile; 
    xml.Load(strFileName); 
    XmlNode xmlNode= xml.SelectSingleNode("configuration"); 
    XmlNode node = xmlNode.SelectSingleNode("connectionStrings/add[@name=’EFDbConnection’]"); 
    XmlElement xe = node as XmlElement; 
    xe.SetAttribute("connectionString", connstr); 
    xml.Save("strFileName");
    System.Configuration.ConfigurationManager.RefreshSection("connectionStrings");
}

此代码由Java架构师必看网-架构君整理
SqlConnectionStringBuilder scb= new SqlConnectionStringBuilder(ConfigurationManager.ConnectionStrings["EFDbContext"].connectionString);
string serverIP = scb.Server;
string serverPort = scb.Port.ToString();