![]() public int DeleteEmployee(Employee aEmployee).public int SaveEmployee(Employee aEmployee).return dbConn.Query( "Select * From " ).dbConn = DependencyService.Get().GetConnection().This class will contain all the data access codes for the application. bytesRead = readStream.Read(buffer, 0, Length) Ĭopy the database file in ‘Resources’ folder of Android platform project.Ĭreate a class in PCL project named as ‘ DataAccess‘.writeStream.Write(buffer, 0, bytesRead).int bytesRead = readStream.Read(buffer, 0, Length).void ReadWriteStream(Stream readStream, Stream writeStream)./// helper method to get the database out of /raw/ and into the user filesystem.var plat = new .SQLitePlatformAndroid().FileStream writeStream = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write). ![]() ![]() var path = Path.Combine(documentsPath, sqliteFilename).string documentsPath = () // Documents folder.In such scenarios first copy the database file at following mentioned locations in platform specific project and then use following code in ‘SQLiteService’ Class.Ĭopy the database file in ‘Resources\Raw’ folder of Android platform project. In some application scenarios there may be a requirement that the database is pre-populated with some data and we are going to use the same in the application. // This is where we copy in the prepopulated database.var path = Path.Combine(libraryPath, sqliteFilename).string libraryPath = Path.Combine(documentsPath, ".", "Library" ) // Library folder.string documentsPath = Environment.GetFolderPath() // Documents folder.Step 3: Create a blank interface with one method signature like following code, So in order to solve this issue we will use dependency service to load the database file in connection object. In case of Xamarin Studio, you will have to individually add the NuGet package by right clicking on the ‘Packages’ folder and selecting ‘Add Packages’ option on each project.Įven tough the ‘ SQLite.Net-PCL‘ package will provide us the functionality of manipulating the SQLite database, it can’t automatically initialize the database connection object as the location of the database file varies on different platforms. In Visual Studio this can be done by right click on the solution and selecting ‘ Manage NuGet Packages for Solution‘ option. In order to use ‘SQLite.Net-PCL’ plugin, add the nuget package of the plugin to each project of the solution. There is no out of the box tool available in Xamarin Forms, so we will be using a third party plugin for this purpose and the most popular plugin is ‘SQLite.Net-PCL’ created by oysteinkrog. The structure of the database will be like following Diagram:Ĭreate a new project in Xamarin/Visual Studio (see this article for steps). We will be using the database to persist employee data. This article will be an step by step guide on how to use a SQLite database with a Xamarin Forms application. It is the best suited relational database for mobile applications as it has very small footprint. The most commonly used relational database with Xamarin Forms is SQLite. The type of database to use mainly depends upon the requirement of the application, but in most of MIS (Management Information Systems) based application relational databases are used for this purpose. => options.In many mobile applications it’s a requirement to store data locally and for that purpose we use databases with the applications. Protected override void OnConfiguring(DbContextOptionsBuilder options) special "local" folder for your platform. The following configures EF to create a Sqlite database file in the Var path = Environment.GetFolderPath(folder) ĭbPath = System.IO.Path.Join(path, "blogging.db") Replace the contents of the file with the following code.Enter Model.cs as the name and click Add.Right-click on the project and select Add > Class.In the project directory, create Model.cs with the following code.
0 Comments
Leave a Reply. |