Contains performance

Question

Hi,

 

I have following code

 

int [] selectedPocilies = {1,2,3,...................10000};

var PolicyData = commonDAL.GetPolicyData(); // policy records

//Below statement took time

var FilteredPolicyData = PolicyData.Where(p => SelectedPolicies.Contains(p.PolicyId)).ToList();

 

Is there anyway to reframe above code line.

Thanks in advance