C#配置文件操作类分享

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);   }  } }