这是一个用C#编写的通过串口控制GSM MODEM的控件。用户可通过控件完成：发送AT指令到GSM MODEM、发送短信、接收短信、读取短信、删除短信等功能。可以同时构造多个实例，通过多个串口控制多个GSM MODEM设备。当GSM MODEM收到新短信后，控件以事件方式通知容器程序。运行环境为.NET 1.1

-This is a used C# Prepared GSM MODEM control through serial control. Users can control the completion of: sending AT commands to the GSM MODEM, send message, receive message, read the message, delete the message and other functions. At the same time, multiple instances can be constructed through a number of serial control of a number of GSM MODEM equipment. When a new message Receive GSM MODEM, the control event procedures to notify the container. Runtime environment for. NET 1.1