using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml;

using System.Windows.Forms;

namespace SZTMinorTool

{

    /// <summary>

    /// App.config配置类

    /// </summary>

    public class AppSettings

    {

        /// <summary>

        /// 获取配置文件路径

        /// </summary>

        /// <returns></returns>

        public static string AppConfig()

        {

            return System.IO.Path.Combine(Application.StartupPath, "App.config");//此处配置文件在程序目录下，或者设置为指定的配置文件路径

        }

        /// <summary>

        /// 获取配置节点值

        /// </summary>

        /// <param name="appKey">节点key值</param>

        /// <returns></returns>

        public static string GetValue(string appKey)

        {

            XmlDocument xDoc = new XmlDocument();

            try

            {

                xDoc.Load(AppSettings.AppConfig());

                XmlNode xNode;

                XmlElement xElem;

                xNode = xDoc.SelectSingleNode("//appSettings"); //补充，需要在你的app.config 文件中增加一下，<appSetting> </appSetting>

                xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");

                if (xElem != null)

                    return xElem.GetAttribute("value");

                else

                    return "";

            }

            catch (Exception)

            {

                return "";

            }

        }

        /// <summary>

        /// 设置配置节点值

        /// </summary>

        /// <param name="AppKey">key</param>

        /// <param name="AppValue">value</param>

        public static void SetValue(string AppKey, string AppValue)

        {

            XmlDocument xDoc = new XmlDocument();

            xDoc.Load(AppSettings.AppConfig());

            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

            {

                xElem2 = xDoc.CreateElement("add");

                xElem2.SetAttribute("key", AppKey);

                xElem2.SetAttribute("value", AppValue);

                xNode.AppendChild(xElem2);

            }

            xDoc.Save(AppSettings.AppConfig());

        }

    }

}