Public abstract void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)Ĭalled when database needs to be upgraded. Public abstract void onCreate(SQLiteDatabase db)Ĭalled only once when database is created for the first time. There are many methods in SQLiteOpenHelper class. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version, DatabaseErrorHandler errorHandler)Ĭreates an object for creating, opening and managing the database. SQLiteOpenHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version)Ĭreates an object for creating, opening and managing the database. There are two constructors of SQLiteOpenHelper class. For performing any database operation, you have to provide the implementation of onCreate() and onUpgrade() methods of SQLiteOpenHelper class. The class is used for database creation and version management. SQLiteOpenHelper class provides the functionality to use the SQLite database. For displaying data on the spinner or listview, move to the next page. Here, we are going to see the example of sqlite to store and fetch the data. So, there is no need to perform any database setup or administration task. used to perform database operations on android devices such as storing, manipulating or retrieving persistent data from the database. That is all! If you start the application now, you will see the data loaded in the control.SQLite is an open-source relational database i.e. In that method, we call the method of the class and pass the collection to it. Finally, we define the method, which will be called on the event of the page. This allows us to bind the attribute of the control to the property of the page. We use the constructor to initialize the collection and set the DataContext property of the page to the instance of the page. Private async void Page_Loaded(object sender, RoutedEventArgs e)Īwait DatabaseConnector.LoadRecordsAsync(Items) Var descriptionOrdinal = reader.GetOrdinal("Description") Var nameOrdinal = reader.GetOrdinal("Name") Using(var reader = await command.ExecuteReaderAsync()) SQLiteCommand command = new SQLiteCommand("SELECT * FROM Data", connection) Using(SQLiteConnection connection = new SQLiteConnection("Data Source=Assets/uwp.db Version=3")) Public static async Task LoadRecordsAsync(ObservableCollection items) Open the DatabaseConnector.cs file and replace its content with the following code: using ĭouble-click on the project name in the and select. In the right-click on the node and select. For that, however, we first need to add an SQLite package to our project. Now, we are going to create a routine for loading records from the database. Additionally, we defined a handler for the event that we will use to load the records from the database. Finally, we defined two elements and bound their attributes to the and properties of the class. That allows us proper binding to the class properties. We set the value of the attribute of the to, which is the name of the container class we have just created. We bound the attribute to property, which we will define later in the file. In the code, we added a new control with the name. Replace the content of the file with the following XAML code: In the double-click on the file to open it. Next, we are going to add a ListView control to the main page and define how the content of each item should be shown. Next, in the, double-click on the file to open it and replace the content of the file with the following code: namespace ListViewSQLiteĪs you can see, the class has two string properties and mimicking the structure of the database’s table.
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