获取WebConfig 配置项的值

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using System.Configuration;

 namespace DataInterface.Archives

 {

     public class Configuration

     {

         /// <summary>

         ///   索引器

         /// </summary>

         /// <param name="Configkey">配置项的key</param>

         /// <returns></returns>

         public string this[string configkey]

         {

             get { return GetFileConfigValue(configkey); }

         }

         private static Configuration _settings = new Configuration();

         /// <summary>

         /// 获取WebConfig 配置项的值。

         /// </summary>

         /// <param name="configkey">配置项的key</param>

         /// <returns></returns>

         private static string GetFileConfigValue(string configkey)

         {

             string configValue = ConfigurationManager.AppSettings[configkey];

             return configValue ?? "";

         }

     }

 }