PropertyChanged Event

Overview

Standard .NET property change event INotifyPropertyChanged. It is raised when table-level observable properties (for example, Rows count) change.

Declaration

/// <summary>
/// Standard .NET property change notification (Count, Rows, etc.).
/// INotifyPropertyChanged interface implementation
/// </summary>
public event PropertyChangedEventHandler? PropertyChanged;

Namespace and Assembly

Namespace: PocoDataSet.ObservableData
Assembly: PocoDataSet.ObservableData.dll

Usage Example

// 1. Create observable dataset
IObservableDataSet observableDataSet = new ObservableDataSet();

// 2. Create Employee observable data table
IObservableDataTable employeeObservableDataTable = observableDataSet.AddNewTable("Employee");
employeeObservableDataTable.AddColumn("Id", DataTypeNames.INT32);
employeeObservableDataTable.AddColumn("Name", DataTypeNames.STRING);

// 3. Sign up for PropertyChanged event
employeeObservableDataTable.PropertyChanged += Employee_PropertyChanged;

// 3. Add a row, which triggers PropertyChanged event ("Rows") / ("Count")
IObservableDataRow employeeObservableDataRow = employeeObservableDataTable.AddNewRow();

// Handles Employee.PropertyChanged event
static void Employee_PropertyChanged(object? sender, PropertyChangedEventArgs e)
{
    Console.WriteLine("Property changed: " + e.PropertyName);
}

 

Table of Content POCO DataSet API References ObservablePOCO DataSet Types ObservableDataTable Members

 

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Business Process Programming in .Net
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