C# 配置文件操作类

注意添加引用：System.Configuration；

 using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;  

namespace DotNet.Utilities.配置文件操作类
{
    public class ConfigHelper_sufei
    {
        /// <summary>
        /// 根据Key取Value值
        /// </summary>
        /// <param name="key"></param>
        public static string GetValue(string key)
        {
            return ConfigurationManager.AppSettings[key].ToString().Trim();
        }  

        /// <summary>
        /// 根据Key修改Value
        /// </summary>
        /// <param name="key">要修改的Key</param>
        /// <param name="value">要修改为的值</param>
        public static void SetValue(string key, string value)
        {
            ConfigurationManager.AppSettings.Set(key, value);
        }  

        /// <summary>
        /// 添加新的Key ，Value键值对
        /// </summary>
        /// <param name="key">Key</param>
        /// <param name="value">Value</param>
        public static void Add(string key, string value)
        {
            ConfigurationManager.AppSettings.Add(key, value);
        }  

        /// <summary>
        /// 根据Key删除项
        /// </summary>
        /// <param name="key">Key</param>
        public static void Remove(string key)
        {
            ConfigurationManager.AppSettings.Remove(key);
        }
    }
}  

ConfigHelper