#Sqlite tutorial ppt how to#

#Sqlite tutorial ppt how to#

Creating an SQLite database from a Python program: shows you how to create a new SQLite database from a Python program using the sqlite3 module.

We will use the PySQLite wrapper to demonstrate how to work with the SQLite database library using Python. It even allows you to write a virtual table implementation using Python. The APSW is designed to mimic the native SQLite C, therefore, whatever you can do in SQLite C API, you can do it also from Python.īesides covering the SQLite library, the APSW provides many low-level features including the ability to create user-defined aggregate, function, and collations from Python. The APSW provides the thinnest layer over the SQLite database library. If your application needs to support only the SQLite database, you should use the APSW module, which is known as Another Python SQLite Wrapper. PySQLite is a part of the Python standard library since Python version 2.5 APSW The PySQLite provides a standardized Python DBI API 2.0 compliant interface to the SQLite database. If your application needs to support not only the SQLite database but also other databases such as MySQL, PostgreSQL, and Oracle, the PySQLite is a good choice. Each interface targets a set of different needs. Python provides two popular interfaces for working with the SQLite database library: PySQLite and APSW. This section shows you step by step how to work with the SQLite database using Python programming language. I'm not sure whether everything else is okay or not though. Right now I have the error ErrorĜS1061 'Student' does not contain a definition for 'ToList' and no accessible extension method 'ToList' accepting a first argument of type 'Student' could be found (are you missing a using directive or an assembly reference?) when I run it. Now in the post, inside the Model folder, they added an ADO.NET Entity Data Model that connects to the Students table in the database and named it StudentModel while changing connectionstring name to StudentEntities.īut, I have a local SQLite database, how do I change that and what other things I need to change to make this app work? This.DataContext = new StudentViewModel() Propert圜hanged(this, new Propert圜hangedEventArgs(propertyName)) Protected void OnPropert圜hanged(string propertyName) Public event Propert圜hangedEventHandler Propert圜hanged Public class ViewModelBase : INotifyPropert圜hanged ViewModelBase.cs using System.ComponentModel

_repository.GetAll().ForEach(data => (new StudentRecord() _studentEntity.stdContact = StudentRecord.Contact

_studentEntity.stdAge = StudentRecord.Age _studentEntity.stdName = StudentRecord.Name MessageBox.Show('Error occured while saving. MessageBox.Show('Record successfully deleted.') If (MessageBox.Show('Confirm delete of this record?', 'Student', MessageBoxButton.YesNo) _deleteCommand = new Rela圜ommand(param => DeleteStudent((int)param), null) _editCommand = new Rela圜ommand(param => EditData((int)param), null) _saveCommand = new Rela圜ommand(param => SaveData(), null) _resetCommand = new Rela圜ommand(param => ResetData(), null) Public event EventHandler CanExecuteChangedĪdd Return _canExecute = null ? true : _canExecute(parameter) Throw new ArgumentNullException('execute') Public Rela圜ommand(Action execute, Predicate canExecute) Public ObservableCollection StudentRecords

Private ObservableCollection _studentRecords Public class StudentRecord : ViewModelBase Var query = 'SELECT * FROM tblStud WHERE stdId = args = new student.stdId} Public void RemoveStudent(Student student)Ĭonst string query = 'Delete from tblStud WHERE stdId = args = new student.stdId} Public void UpdateStudent(Student student)Ĭonst string query = 'UPDATE tblStud SET stdName = stdAge = stdAddress = stdContact = WHERE stdId = args = new student.stdContact} Public DataTable Execute(string query, Dictionary args)Ĭmd.Parameters.AddWithValue(entry.Key, entry.Value) Ĭonst string query = 'INSERT INTO tblStud(stdName, stdAge, stdAddress, stdContact) args = new student.stdContact} Using (var cmd = new SQLiteCommand(query, con))Ĭmd.Parameters.AddWithValue(pair.Key, pair.Value) Using (var con = new Source=/.Students.db ')) Public void ExecuteWrite(string query, Dictionary args) Also, for someone who is new to MVVM pattern it seems pretty intimidating to say the least.Īnyways, coming to the point, I've found this post online and tried my best to make it work for SQLite databases but struggling at the moment. I'm totally new to MVVM and I've been going through a lot of online posts regarding how do I implement CRUD operations and properly bind SQLite database data to WPF controls like Datagrid, Combobox, Textbox, Button etc.