sp_executesql - Procedure or function expects parameter which was not supplied

Question

I am working with Entity Framework in C# and am having an issue which I have tracked down to the SQL statement being generated.

The stored procedure takes in a table

Answer 1

You're using sp_executesql to run the SQL text dbo.SaveResults. This T-SQL runs the procedure dbo.SaveResults with no parameters. Now you understand where that message comes from. What to do about it? Use EXEC:

EXEC dbo.SaveResults @resultID = 1234, @positiveResults = @p3

Or, nest the call:

exec sp_executesql N'

    EXEC dbo.SaveResults @resultID = @resultID, @positiveResults = @positiveResults

',N'@resultID int, @positiveResults [PositiveTypes] READONLY',@resultID=1,@positiveResults=@p3

I have indented to make it more clear. The 2nd variant is not useful as far as I can tell. Use the first one.