Specified cast is not valid

Question

I\'m trying to get the Score_Waarde value from my database using the following code :

critid = critid_arr[teller2].ToString();

int scorehulp =          


        

Answer 1

I was originally getting this error (my C# code

someobject.TotalItemCount = (Int32)dbManager.GetParameterValue("TotalRows"))

where TotalItemCount was of int type, even though the SP was fine & was giving proper result. I got rid of this just by fixing the SP by adding the following code

Set @TotalRows =  @@rowcount.  

Answer 2

Your SQL is probably giving back a different numeric type, such as long or decimal, or, apparently, string.

Call Convert.ToInt32, which doesn't have the limitations of an unboxing cast.