c# winform app.config xml 配置文件 读写操作

/// <summary> /// 设置配置文件 对指定项设置指定值 /// </summary> /// <param name="AppKey"></param> /// <param name="AppValue"></param> public static void SetValue(string AppKey, string AppValue) { System.Xml.XmlDocument xDoc = new System.Xml.XmlDocument(); xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config"); System.Xml.XmlNode xNode; System.Xml.XmlElement xElem1; System.Xml.XmlElement xElem2; xNode = xDoc.SelectSingleNode("//appSettings"); xElem1 = (System.Xml.XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']"); if (xElem1 != null) xElem1.SetAttribute("value", AppValue); else { xElem2 = xDoc.CreateElement("add"); xElem2.SetAttribute("key", AppKey); xElem2.SetAttribute("value", AppValue); xNode.AppendChild(xElem2); } xDoc.Save(System.Windows.Forms.Application.ExecutablePath + ".config"); }//加载配置信息string url = System.Configuration.ConfigurationSettings.AppSettings["url"].ToString();