APP.Config：

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Xml;

namespace WindowsFormsApplication1
{
    /// <summary>
    /// C#中动态读写App.config配置文件
    /// </summary>
    public class AppConfig
    {
        public AppConfig()
        {
            ///
            /// TODO: 在此处添加构造函数逻辑
            ///
        }
        /// <summary>
        /// 写操作
        /// </summary>
        /// <param name="strExecutablePath"></param>
        /// <param name="AppKey"></param>
        /// <param name="AppValue"></param>
        public static void ConfigSetValue(string strExecutablePath, string AppKey, string AppValue)
        {
            XmlDocument xDoc = new XmlDocument();
            //获取可执行文件的路径和名称
            xDoc.Load(strExecutablePath);

            XmlNode xNode;
            XmlElement xElem1;
            XmlElement xElem2;
            xNode = xDoc.SelectSingleNode("//appSettings");
            // xDoc.Load(System.Windows.Forms.Application.ExecutablePath + ".config");
            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(strExecutablePath);
        }

        /// <summary>
        /// 读操作
        /// </summary>
        /// <param name="strExecutablePath"></param>
        /// <param name="appKey"></param>
        /// <returns></returns>
        public static string ConfigGetValue(string strExecutablePath, string appKey)
        {
            XmlDocument xDoc = new XmlDocument();
            try
            {
                xDoc.Load(strExecutablePath);

                XmlNode xNode;
                XmlElement xElem;
                xNode = xDoc.SelectSingleNode("//appSettings");
                xElem = (XmlElement)xNode.SelectSingleNode("//add[@key='" + appKey + "']");
                if (xElem != null)
                    return xElem.GetAttribute("value");
                else
                    return "";
            }
            catch (Exception)
            {
                return "";
            }
        }
    }
}

下载app.config

调用方法：

System.IO.FileInfo FileInfo = new System.IO.FileInfo(Application.StartupPath + @"\WindowsFormsApplication1.exe.config");
            if (!FileInfo.Exists) //不存在web.config文件
            {
                label5.Text="没有找到文统配置文件！";
            }
            AppConfig.ConfigSetValue(FileInfo.FullName, "server", ServerName);
            AppConfig.ConfigSetValue(FileInfo.FullName, "database", DbName);
            AppConfig.ConfigSetValue(FileInfo.FullName, "uid", UserName);
            AppConfig.ConfigSetValue(FileInfo.FullName, "pwd", PassWord);
            label5.Text = "配置成功！";

• 本文标题： C# 动态增删改App.Config，动态配置app.config
• 文章分类：【WinForm/WPF】
• 非特殊说明，本文版权归【胡同里的砖头】个人博客 所有，转载请注明出处.

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