C# winform授权：获取cpu和硬盘的序列号，得到机器码，传给服务器端，从而生成注册码，使软件注册使用。问

用webservice吧。
客户端得到参数。然后用webservice传递过去参数。得到就是注册码。

首先在添加引用中选中System.Management
再在开始部门：
using System.Management;
using System.Management.Instrumentation;

private void GetInfo()
{
string cpuInfo = "";//cpu序列号
ManagementClass cimobject = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach(ManagementObject mo in moc)
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
Response.Write ("cpu序列号："+cpuInfo.ToString ());
}

//获取硬盘ID
String HDid;
ManagementClass cimobject1 = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc1 = cimobject1.GetInstances();
foreach(ManagementObject mo in moc1)
{
HDid = (string)mo.Properties["Model"].Value;
Response.Write ("硬盘序列号："+HDid.ToString ());
}

//获取网卡硬件地址

ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc2 = mc.GetInstances();
foreach(ManagementObject mo in moc2)
{
if((bool)mo["IPEnabled"] == true)
Response.Write("MAC address\t{0}"+mo["MacAddress"].ToString());
mo.Dispose();
}
}

在添加引用中选中System.Management
再在开始部门：
using System.Management;
using System.Management.Instrumentation;

private void GetInfo()
{
string cpuInfo = "";//cpu序列号
ManagementClass cimobject = new ManagementClass("Win32_Processor");
ManagementObjectCollection moc = cimobject.GetInstances();
foreach(ManagementObject mo in moc)
{
cpuInfo = mo.Properties["ProcessorId"].Value.ToString();
Response.Write ("cpu序列号："+cpuInfo.ToString ());
}

//获取硬盘ID
String HDid;
ManagementClass cimobject1 = new ManagementClass("Win32_DiskDrive");
ManagementObjectCollection moc1 = cimobject1.GetInstances();
foreach(ManagementObject mo in moc1)
{
HDid = (string)mo.Properties["Model"].Value;
Response.Write ("硬盘序列号："+HDid.ToString ());
}

//获取网卡硬件地址

ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc2 = mc.GetInstances();
foreach(ManagementObject mo in moc2)
{
if((bool)mo["IPEnabled"] == true)
Response.Write("MAC address\t{0}"+mo["MacAddress"].ToString());
mo.Dispose();
}
}

有原始数据，生成注册码的部分，按算法处理一下就行，好象这种方法挻流行。