..http://support.smartbear.com/pdf/11_Best_Practices_for_Peer_Code_Review.p...
Thursday, November 6, 2014
The cast to value type 'Double' failed because the materialized value is null. Either the result type's generic parameter or the query must use a nullable type
The cast to value type 'Double' failed because the materialized value is null. Either the result type's generic parameter or the query must use a nullable type
OR
The cast to value type 'Int32' failed because the materialized value is null. Either the result type's generic parameter or the query must use a nullable type
Solution:
Put conversion on values before putting it in functions like Avg, Sum etc
like:
In below code...
DbArithmeticExpression arguments must have a numeric common type
DbArithmeticExpression arguments must have a numeric common type
Solution:
we can't put datediff directly in linq / lambda.. instead of that we should use like : EntityFunctions.DiffMinutes
Eg:
dgvProfiles.DataSource = (from profile in dbModel.ProfileMasters
select new
{
ProfileID...
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