Getting a boolean from SQL in C# – GetBoolean()

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Join Stack Overflow to learn, share knowledge, and build your career. I'm playing around with SQlite and sql commands. I'm trying to make a quizz program and I have a loop, that reads sqldatareader getboolean bitcoin questions and answers from my database and adds them to a list. I also have a bool that defines if the answer picked from the database is right or wrong. My problem is that all this works fine the sqldatareader getboolean bitcoin time my loop executes the code and adds the true and false to my array of bools, but the 2'nd time my loop executes it throws the exception: The method that fails looks like this: I made a comment where the code fails:.

SQLite does not guarantee that the contents of any column will match the cast. The GetBoolean is failing. You have 3 choices. In my case, EF was throwing the same error "Specified cast not valid" because it couldnt resolve "" that SQLite was throwing at it.

By posting your answer, you agree to the privacy policy and terms of service. Email Sign Up or sign in with Google. I made a comment where the code fails: GetString 0 ; idList. Mostly likely, sqldatareader getboolean bitcoin you read DbNull from database, which cannot be cast to bool. VikciaR 2, 11 This is so helpful. Once I changed it to an integer value 0 for false sqldatareader getboolean bitcoin things started working properly.

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