8/21/2023 0 Comments Wpf sqlite tutorial![]() ![]() Sqlite_datareader = sqlite_cmd.ExecuteReader() Sqlite_cmd.CommandText = " SELECT * FROM test" Sqlite_conn = New SQLiteConnection( " Data Source=database.sqlite Version=3 New=True ") You can use the following snippet to create a SQLite database file:ĭim sqlite_datareader As SQLiteDataReader So, here are some snippets to explain the basics: Creating a database (file) The SQLite code in the sample projects is pretty self explanatory but it might raise questions for those who are not used to working with relational database systems. The code can be found in the file (unless stated differently). The sample applications in this tutorial are simple WPF projects with textual output. So, you can use either of these tools to check-up on your database whenever you perform any of the steps described below. I am on the other hand a big fan of open source and so I am preferring for this and other reasons the SQLite Manager Plug-in for FireFox, since its available on all platforms and does not change my VS settings. There is, for example, a SQLite / SQL Server Compact Toolbox Plug-in for Visual Studio that can be used to state SQL queries or review the current Data Definition of the database. The SQLite ecosystem contains tons of such client query applications. Additional ToolsĪ relational database system includes usually some sort of (text based) SQL query application (eg.: SQL Management Studio or VS for SQL Server). To answer this with SQlite in an applied way, I am doing this side-step to explain the basics of SQLite, and later on, build on it with a separate article that will explain storing tree structured data in a relational database engine (see also XML solution over here). How do I store or retrieve TreeView based data to/from a file? I have created a series of Advanced WPF TreeView articles which resulted in some feedback along the line: You can also mannually download the binaries from:Īnd include a static reference in your project. ![]() Just create a new VS project (eg.: Console) and look for the package. The SQLite database engine can be used via NuGet. ![]() How Foreign Keys can be enforced is shown in the Enforcing Foreign Keys sections. The enforcement of Foreign Keys is for backward compatability reasons switched off by default. This default limitation can be worked around by using the correct journal mode as we will see in the Accessing a SQLite Database from Multiple Threads section below. computing difficult analysis on the fly without having to use an additional serverĪ file based database cannot be accessed by 2 threads at any given time which is why it is important to always close a database after its usage since a potentially hanging thread could block a later call to Open().storing and retrieving data structures in an optimal format (Application File Format).The application of embedded databases includes (but is not limited to): having additional Set-up/maintenance/security efforts for running a dedicated database server.re-inventing the wheel when it comes to implementing complex structures, such as, an additional index or.Using an embedded database engine like SQLite enables us to work efficiently with complex data structures without having to either worry about: The engine requires no additional Set-up since it is implemented in a set of DLLs that are referenced in a given VS project. The SQLite database engine is available for multiple operating systems (Android, IOS, Linux, Windows), programming languages, and can be used as in memory engine or as a local file based database engine. This article provides a C#/.Net 101 style introduction to a well known and widely used open source database called SQLite (note that the spelling is not SQLLite or SQL Light). The recent gains in memory and processing capabilities of PC, server, and laptop computers make the demand for manipulating and displaying complex data structures in everyday applications more and more common. Accessing a SQLite Database from Multiple Threads.Use SQLiteConnectionStringBuilder for Connection Strings. ![]()
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