Violation of PRIMARY KEY constraint 'PK_Ads'. Cannot insert duplicate key in object 'dbo.Ads'. The duplicate key value is (0).
The statement has been terminated.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

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Exception Details: System.Data.SqlClient.SqlException: Violation of PRIMARY KEY constraint 'PK_Ads'. Cannot insert duplicate key in object 'dbo.Ads'. The duplicate key value is (0).
The statement has been terminated.