creating virtual directory in other system iis.

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.NET

.NET4

i am able to create the virtual directory in loacal and remoting system with the below code

public void createvirtualdir()
        {
            string strSchema = "IIsWebVirtualDir";
            string strRootSubPath = "IIS://" + strdest + "/W3SVC/1/Root";
            string strphysicalpath=@"c:\\inetpub\wwwroot\";
            DirectoryEntry deRoot = new DirectoryEntry(strRootSubPath);
            try
            {
                if(CheckIfExists(strRootSubPath,"TestVirDir1"))
                {
                    strphysicalpath=strphysicalpath + "\\" +"TestVirDir1";
                    Delete(strRootSubPath, "TestVirDir1", strphysicalpath);
                    
                }
                
               
               deRoot.Username = some username              deRoot.Password = some password
               
                 DirectoryEntry deNewVDir = deRoot.Children.Add("TestVirDir1", strSchema);                
                deNewVDir.Properties["Path"].Insert(0, "C:\\TestWebApp\\TestWebApp"); // Just for example.
                //deNewVDir.Properties["physicalPath"].Insert(0, strphysicalpath);
               // deNewVDir.Properties["AppFriendlyName"].Value = "TestWebApp";
                //deNewVDir.InvokeSet("AppFriendlyName","TestWebApp");
                //deNewVDir.Properties["DefaultDoc"].Value = "Default.aspx";
               
                  
                // Create a Application
                if (strSchema == "IIsWebVirtualDir")
                    deNewVDir.Invoke("AppCreate", 1);
                
                deNewVDir.CommitChanges();
                deRoot.CommitChanges();
                PropertyValueCollection scriptMapVals = deNewVDir.Properties["ScriptMaps"];
                ArrayList objScriptMaps = new ArrayList();
                string frameworkVersion = "4.0.30128";   //ConfigurationManager.AppSettings["frameworkVersion"];
                Regex versionRegex = new Regex(@"(?<=\\v)\d{1}\.\d{1}\.\d{1,5}(?=\\)");
                //Assuming the version will always be something like n.n.nnnnn
                foreach (string scriptMapVal in scriptMapVals)
                {
                    if (scriptMapVal.Contains("Framework"))
                    {
                        objScriptMaps.Add(versionRegex.Replace(scriptMapVal, frameworkVersion));
                    }
                    else
                    {
                        objScriptMaps.Add(scriptMapVal);
                    }
                }
                deNewVDir.Properties["ScriptMaps"].Value = objScriptMaps.ToArray();
                
               
                // Save Changes
                deNewVDir.CommitChanges();
                deRoot.CommitChanges();
                deNewVDir.Close();
                deRoot.Close();
                //Console.WriteLine("Virtual Directory TestVirDir has been created");
                MessageBox.Show("Virtual Directory TestVirDir has been created");
            }
            catch (Exception ex)
            {
                //Console.WriteLine("Error: " + ex.Message);
                MessageBox.Show("Error: " + ex.Message);
            }
        }

but not able to invoke the virtual directory in remoting server with

deNewVDir.Invoke("AppCreate", 1) line, but in local its working fine.i am getting error like Unknown name. (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME))