给定一个IP地址开头和结尾，返回在此范围内的所有IP地址列表，VB.Net实现，可以很容易的转换成C#代码

    'start and end ip address ，code from www.sharejs.com
    Dim startiprange As Net.IPAddress = Net.IPAddress.Parse("192.168.0.0")
    Dim endiprange As Net.IPAddress = Net.IPAddress.Parse("192.168.255.255")

    'reverse address bytes for conversion to integer
    Dim strtip() As Byte = startiprange.GetAddressBytes
    Array.Reverse(strtip)
    Dim endip() As Byte = endiprange.GetAddressBytes
    Array.Reverse(endip)

    'convert
    Dim ips As UInt32 = BitConverter.ToUInt32(strtip,0)
    Dim ipe As UInt32 = BitConverter.ToUInt32(endip,0)

    'then loop from start to end
    For anip As UInt32 = ips To ipe
        'convert to bytes
        Dim ipbyt() As Byte = BitConverter.GetBytes(anip)
        'reverse and create ip address
        Array.Reverse(ipbyt)
        Dim ipaddr As New Net.IPAddress(ipbyt)
        Debug.WriteLine(ipaddr.ToString)
    Next
//该代码片段来自于: http://www.sharejs.com/codes/asp/8680