asp.net编程中常用的web.config操作类

using System;
using System.Configuration;

namespace ROYcms.Common
{
 /// <summary>
 /// web.config操作类
    /// 李天平
    /// 2004.8
 /// </summary>
 public sealed class ConfigHelper
 {
  /// <summary>
  /// 得到AppSettings中的配置字符串信息
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public static string GetConfigString(string key)
  {
            string CacheKey = "AppSettings-" + key;
            object objModel = DataCache.GetCache(CacheKey);
            if (objModel == null)
            {
                try
                {
                    objModel = ConfigurationManager.AppSettings[key];
                    if (objModel != null)
                    {                       
                       DataCache.SetCache(CacheKey, objModel, DateTime.Now.AddMinutes(180), TimeSpan.Zero);
                    }
                }
                catch
                { }
            }
            return objModel.ToString();
  }

  /// <summary>
  /// 得到AppSettings中的配置Bool信息
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public static bool GetConfigBool(string key)
  {
   bool result = false;
   string cfgVal = GetConfigString(key);
   if(null != cfgVal && string.Empty != cfgVal)
   {
    try
    {
     result = bool.Parse(cfgVal);
    }
    catch(FormatException)
    {
     // Ignore format exceptions.
    }
   }
   return result;
  }
  /// <summary>
  /// 得到AppSettings中的配置Decimal信息
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public static decimal GetConfigDecimal(string key)
  {
   decimal result = 0;
   string cfgVal = GetConfigString(key);
   if(null != cfgVal && string.Empty != cfgVal)
   {
    try
    {
     result = decimal.Parse(cfgVal);
    }
    catch(FormatException)
    {
     // Ignore format exceptions.
    }
   }

   return result;
  }
  /// <summary>
  /// 得到AppSettings中的配置int信息
  /// </summary>
  /// <param name="key"></param>
  /// <returns></returns>
  public static int GetConfigInt(string key)
  {
   int result = 0;
   string cfgVal = GetConfigString(key);
   if(null != cfgVal && string.Empty != cfgVal)
   {
    try
    {
     result = int.Parse(cfgVal);
    }
    catch(FormatException)
    {
     // Ignore format exceptions.
    }
   }

   return result;
  }
 }
}