[Sarita Tejapu]

CompanyDetail companyDetail= dc().CompanyDetail.First(c => c.companyName == updatedCompanyDetail.companyName);
			companyDetail=updatedCompanyDetail;
			dc().SubmitChanges();

I am updating a record of table called companyDetails,where my primary key is companyname. Changes are not submitting.

Please help me as i m just a begginer in C# LINQ.