Update by using Two ids in entity framework 4.1 by using WCF Service

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C#

ASP.NET

WCF

C#4.0

Hi Frds,
how can i update in single Table by using Two Id's in Wcf Service...
hear i can try this

var EmplyeeCompany = IMyEntities.EmployeeCompanies.Where(t1 => t1.CompanyId == updateProviderScheduleRequest.EmployeeCompany.CompanyId)
              .SelectMany(t1=>ICloudBizEntities.EmployeeCompanies.Where(t2 => t2.ProviderId == updateProviderScheduleRequest.EmployeeCompany.ProviderId))
              .FirstOrDefault();

but in the EmployeeCompany Table First Row is Updated...


plz help me