WinForm操作config文件

往配置文件中保存配置信息

public void SetConfigValue(string AppKey, string AppValue)
        {
            XmlDocument xDoc = new XmlDocument();
            xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");
            XmlNode xNode;
            XmlElement xElem1;
            XmlElement xElem2;
            xNode = xDoc.SelectSingleNode("//appSettings");
            xElem1 = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");
            if (xElem1 != null)
                xElem1.SetAttribute("value", AppValue);
            else//如果没有该节点，则添加
            {
                xElem2 = xDoc.CreateElement("add");
                xElem2.SetAttribute("key", AppKey);
                xElem2.SetAttribute("value", AppValue);
                xNode.AppendChild(xElem2);
            }
            xDoc.Save(System.Windows.Forms.Application.ExecutablePath + ".config");
        }

根据节点名称读取配置信息

public string GetConfigValue(string AppKey)
        {
            XmlDocument xDoc = new XmlDocument();
            try
            {
                xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");
                XmlNode xNode = xDoc.SelectSingleNode("//appSettings");
                XmlElement xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + AppKey + "']");
                if (xElem != null)
                    return xElem.GetAttribute("value");
                else
                    return "";
            }
            catch (Exception ex)
            {
                return ex.ToString();
            }
        }