use methods at a WebService in Win app..

[C# Programming]

Hello,

i'm add a web service in C# win app throw a local network, so the WebService at another PC..
the webservice is added sucssfully and i see all the methodes in it ex: 'CheckUser'..when i create an object from webservice this error is appering to me..

ERROR: 'System.Web.Services.WebService' does not contain a definition for 'CheckUser'

so any help in that ERROR...!!!

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