Question

I am trying to serialize an object to a sql compact database. I am using VCS Express 2008. Every time I run a test to see if my data is sent to the database, nothing is in the database. My code:

string inputForDB = null;                 QuizCategoryTableAdapter quizCategoryAdapter = new QuizCategoryTableAdapter();                 QuizApp._QuizApp_DataSet.QuizCategoryDataTable quizCategoryTable = new QuizApp._QuizApp_DataSet.QuizCategoryDataTable();                 quizCategoryAdapter.Fill(quizCategoryTable);                 //Check to see if quizCategory exists                 if (quizCategoryTable.Rows.Contains(quizCategory._categoryID)) {                     //overwrite (update)                     //Serialize the object and put in db                     MemoryStream MemStream = new MemoryStream();                     IFormatter formatter = new BinaryFormatter();                     formatter.Serialize(MemStream, quizCategory);                     inputForDB = Convert.ToBase64String(MemStream.ToArray());                     quizCategoryAdapter.Insert(quizCategory._categoryName, quizCategory._categoryDescription, inputForDB);                     //send update to database                     MemStream.Close();                 } else {                     //append (insert)                     MemoryStream MemStream2 = new MemoryStream();                     IFormatter formatter2 = new BinaryFormatter();                     formatter2.Serialize(MemStream2, quizCategory);                     inputForDB = Convert.ToBase64String(MemStream2.ToArray());                     quizCategoryAdapter.Insert(quizCategory._categoryName, quizCategory._categoryDescription, inputForDB);                     MemStream2.Close();                 } 

It compiles fine, but for some reason does not work.

Answer 1

You have to call the Adapter Update method as well as AcceptChanges on the DataSet