C＃表適配器更新不工作

Question

我想序列化一個對象到一個SQL壓縮數據庫。我正在使用VCS Express 2008.每次運行測試以查看數據是否發送到數據庫時，數據庫中都沒有任何內容。我的代碼：

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(); 
       } 

它編譯得很好，但由於某種原因不起作用。

Answer 1

您必須調用適配器更新方法以及DataSet上的AcceptChanges