Get remote machie details using c#

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C#

ASP.NET

WMI

Hi , i am retrieving machine details using c# and wmi . i using following code to retrieve information:

ManagementScope scope =new ManagementScope(@"\\"+strIPAddress+@"\root\cimv2");
SelectQuery query = new SelectQuery();
query.QueryString = "select  * from Win32_OperatingSystem";
ManagementObjectSearcher searcher =new ManagementObjectSearcher(scope, query);
ManagementObjectCollection queryCollection = searcher.Get();
foreach (ManagementObject m in queryCollection)
{
 //////////////////////////////////
}

it is working fine for windows operating system. but it does not works for linux , Citrix server,

i have also tried this code :

string strURL="http://www.google.com"; 

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strURL);
        try
        {
            HttpWebResponse response =(HttpWebResponse) request.GetResponse();
            string strServer= response.Server;           
        }
        catch (WebException wex)
        {
        // Safe cast to HttpWebResponse using 'as', will return null if unsuccessful
            var httpWebResponse = wex.Response as HttpWebResponse;
            if (httpWebResponse != null)
            {
                var httpStatusCode = httpWebResponse.StatusCode;
                // HttpStatusCode is an enum, cast it to int for its actual value
                var httpStatusCodeInt = (int)httpWebResponse.StatusCode;
            }
        }

but it does not gives me the remote server os name rather it gives me IIS name.

when i searched over internet, i found the following site:
http://uptime.netcraft.com/[^]


where anyone can retrieve information. can anyone tell how is it works or how we can fetch these details using c#.

Thanks,

Arshad