一个简单的读取appconfig的类

/// <summary>
    /// 接点读取类
    /// （一个简单的读取appconfig的类)
    /// </summary>
    public static class RConfig
    {
        /// <summary>
        /// 读取接点到字符串
        /// </summary>
        /// <param name="key">key</param>
        /// <returns></returns>
        public static string ReadString(string key)
        {           
           return ConfigurationManager.AppSettings[key];           
        }

        /// <summary>
        /// 读取一个整数
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static int ReadInt(string key)
        {
            string val = ReadString(key);

            if (string.IsNullOrEmpty(val))
            {
                throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));                
            }
            else
            {
                int p;

                if (int.TryParse(val, out p))
                {
                    return p;
                }
                else
                {
                    throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));            
                }
            }
        }


        /// <summary>
        /// 读取一个浮点数
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static float Readfloat(string key)
        {
            string val = ReadString(key);

            if (string.IsNullOrEmpty(val))
            {
                throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
            }
            else
            {
                float p;

                if (float.TryParse(val, out p))
                {
                    return p;
                }
                else
                {
                    throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
                }
            }
        }


        /// <summary>
        /// 读取一个长整型
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static long ReadfLong(string key)
        {
            string val = ReadString(key);

            if (string.IsNullOrEmpty(val))
            {
                throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
            }
            else
            {
                long p;

                if (long.TryParse(val, out p))
                {
                    return p;
                }
                else
                {
                    throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
                }
            }
        }


        /// <summary>
        /// 读取一个布尔值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static bool Readfbool(string key)
        {
            string val = ReadString(key);

            if (string.IsNullOrEmpty(val))
            {
                throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
            }
            else
            {
                bool p;

                if (bool.TryParse(val, out p))
                {
                    return p;
                }
                else
                {
                    throw new ConfigurationErrorsException(string.Format("节点{0}为空", key));      
                }
            }
        }

    }

配置文件：

 

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <connectionStrings>
    <add name="WebConn" connectionString="server=**;database=**;uid=*;pwd=*"/>
  </connectionStrings>
  <appSettings>
    <add key="Host" value="any"/>
    <!--IP或HOST  any表示绑定所有本地IP-->
    <add key="Port" value="11223"/>
    <!--端口-->
    <add key="MaxBufferSize" value="1024"/>
    <!--数据包最大缓冲区-->
    <add key="MaxConnectCout" value="5000"/>
    <!--最大连接数，按实际情况而设，太大内存占用太多，太小连接不够用 默认5000，最大可以设置 10万-->
    <add key="MaxBuffSize" value="4096"/>
  </appSettings>
</configuration>