how to call SOAP web services with SOAP client?

i made a .asmx SOAP web service and with help of this Article i made a Client .cs File and attach it to Unity Project .

to Get it Working i Added the following dll files to the Plugins Folder:I18N.dll , I18N.west.dll , Moni.web.dll , system.Configuration.dll , system.drawing.dll , system.enterpriseServices.dll , system.security , system.web , system.web.services. all from Mono .net 2 folder.

so i made the web service, and can call it Inside the Editor,everything perfectly works. and successfully build without any errors to Windows Standalone.

the game start normally without any errors , but at the point where i make instance from my SOAP client an exception thrown, i dont know what it is and how can i make this working.

the Log file attached but here is exception summery:

 (Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)
 
 Platform assembly: C:\_MrjmFiles\Proj Unity3D\TakhteNard\_Build\A_Data\Managed\System.Xml.dll (this message is harmless)
 TypeLoadException: A type load exception has occurred.
   at System.Web.Services.Protocols.SoapExtension.GetTypeExtensions (System.Type serviceType) [0x00000] in <filename unknown>:0 

the main goal is get it work with android , the windows standalone is just a playground for testing purpose.

i have been googled this , not found a real solution, it seems a little tricky , any help and guide will be appreciated

logFilet