看看以下这些内容:
文章:
通过Web服务使用.NET发送SMS [使用ASP.NET脚本发送SMS短信 [使用vb.net发送短信 [如何使用C#通过asp.net发送短信? [ ^ ]

Have a look at these to start of:
Articles:
Sending SMS using .NET through Web service[^]
Sending SMS text messages using ASP.NET scripts[^]

Discussion links:
sending sms using vb.net[^]
how to send sms through asp.net with c#? [^]