c# - Class library error, calling Webservice -


i have class library, calls webservice. when try , instantiate new instance of client, being thrown following error vs:

an exception of type 'system.invalidoperationexception' occurred in system.servicemodel.dll not handled in user code

additional information: not find default endpoint element references contract 'sanctionscheckingservice.isanctionscheckingservice' in servicemodel client configuration section. might because no configuration file found application, or because no endpoint element matching contract found in client element.

my app.config file contains following, looks correct:

<?xml version="1.0" encoding="utf-8" ?> <configuration> <system.servicemodel>     <bindings>         <basichttpbinding>             <binding name="basichttpbinding_isanctionscheckingservice" />         </basichttpbinding>     </bindings>     <client>         <endpoint address="http://localhost:56200/sanctionscheckingservice"             binding="basichttpbinding" bindingconfiguration="basichttpbinding_isanctionscheckingservice"             contract="sanctionscheckingservice.isanctionscheckingservice"             name="basichttpbinding_isanctionscheckingservice" />     </client> </system.servicemodel> 

can point why happening?


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