Custom tool error when adding service refrence

Custom tool error when adding service refrence

Hi First of all sorry if this is a duplicated question but I read nearly
all articles in stackoverflow and msdn about this problem and still no
luck. I'm developing an application in c# (WinForm) and I want to use a
web service to retrieve some information. They gave me a WSDL file and I
tried to add a service reference to my project but I got this warnings and
an error: (I also unchecked "reuse types in referenced assemblies")
Warning 3 Custom tool warning: Cannot import wsdl:portType Detail: An
exception was thrown while running a WSDL import extension:
System.ServiceModel.Description.XmlSerializerMessageContractImporter
Error: The datatype 'urn:tvtowsdl:gavahiRow' is missing.
Warning 5 Custom tool warning: Cannot import wsdl:port Detail: There was
an error importing a wsdl:binding that the wsdl:port is dependent on.
XPath to wsdl:binding
Warning 4 Custom tool warning: Cannot import wsdl:binding Detail: There
was an error importing a wsdl:portType that the wsdl:binding is dependent
on. XPath to wsdl:portType
Error 6 Custom tool error: Failed to generate code for the service
reference 'ServiceReference1'
I assumed I might going the wrong direction then I tried to add Web
reference and I got these two errors:
Error 1 Custom tool error: Unable to import WebService/Schema. Unable to
import binding 'tvtowsdlBinding' from namespace 'urn:tvtowsdl'. Unable to
import operation 'getGavahi'. The datatype 'urn:tvtowsdl:gavahiRow' is
missing. Error 2 Custom tool error: Unable to import WebService/Schema.
Unable to import binding 'tvtowsdlBinding' from namespace 'urn:tvtowsdl'.
Unable to import operation 'getGavahi'. The datatype
'urn:tvtowsdl:gavahiRow' is missing.
Am I missing something ?I'm using Visual Studio 2012. Please help me.This
is the wsdl file