IsNull Property (EventSource)

Determines whether this event source object is null.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<BrowsableAttribute(False)>
<DefaultValueAttribute(True)>
Public ReadOnly Property IsNull As Boolean

'Usage
 
Dim instance As EventSource
Dim value As Boolean
 
value = instance.IsNull

[Browsable(false)]
[DefaultValue(true)]
public bool IsNull {get;}

[Browsable(false)]
[DefaultValue(true)]
public:
property bool IsNull {
   bool get();
}

Remarks

The event source is null when its source component and extender event provider are null, and the source path is empty.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

EventSource Class
EventSource Members

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