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Control.Events Property

Gets a list of event handler delegates for the control. This property is read-only.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

protected EventHandlerList Events { get; }

Property Value

Type: System.ComponentModel.EventHandlerList
The list of event handler delegates.

This property is of type EventHandlerList, which uses a linear search algorithm to find entries in the list of delegates. A linear search algorithm is inefficient when working with a large number of entries. Therefore, when you have a large list, finding entries with this property will be slow.

The following example creates an event, named Click, that adds and removes handlers from the control's EventHandlerList collection when the event is called from a page.

Note   This example optimizes how a control adds and removes events from the list of them that the control maintains. If you create custom control and want to define an event, use code similar to this. This technique can be used in C#, but not in Visual Basic.

// Create an event that adds and removes handlers from the 
// Control.Events collection when this event is called from 
// a participating page. 
public event EventHandler Click {
    add {
        Events.AddHandler(EventClick, value);
    }
    remove {
        Events.RemoveHandler(EventClick, value);
    }
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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