ICMP就是所谓的Internet控制报文协议（Internet Control Message Protocol），在网络中，一般用它来传递差错报文以及其他应注意的信息。ICMP一般被认为是和IP协议同一层的协议，IMCP报文通常被IP层或者更高层的协议（如：TCP或者UDP）使用，ICMP对于互联网以及其他基于IP协议的网络的正常运行起着非常重要的作用。有许多重要的网络程序都是基于ICMP协议上的，最为著名如Ping和Tracert等。本文就来介绍用Visual C#实现基于ICMP协议重要的网络命令Ping的方法。

-ICMP is called the Internet control message protocol (Internet Control Message Protocol), in the network, generally using it to pass error messages and other information that should be noted. ICMP and IP generally considered to be the same layer of the protocol agreement, IMCP IP layer packet or, more often high-level protocols (such as: TCP or UDP) used, ICMP for the Internet and other IP protocol based on the normal operation of the network plays a very important role. There are many important web applications are based on the ICMP protocol, the most famous such as Ping and Tracert. In this paper, to introduce the use of Visual C# ICMP protocol-based network command Ping important ways.