OPC Studio User's Guide and Reference
FromEasyDAItemChangedEventArgs Method



OpcLabs.EasyOpcClassic Assembly > OpcLabs.EasyOpc.DataAccess.ComplexEventProcessing Namespace > DAItemChangedPayload<TValue> Class : FromEasyDAItemChangedEventArgs Method
Event data.

The value of this parameter can be null (Nothing in Visual Basic).

Converts event arguments for significant change in a subscribed OPC-DA item to an event payload.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Public Shared Function FromEasyDAItemChangedEventArgs( _
   ByVal eventArgs As EasyDAItemChangedEventArgs(Of TValue) _
) As DAItemChangedPayload(Of TValue)
'Usage
 
Dim eventArgs As EasyDAItemChangedEventArgs(Of TValue)
Dim value As DAItemChangedPayload(Of TValue)
 
value = DAItemChangedPayload(Of TValue).FromEasyDAItemChangedEventArgs(eventArgs)
[CanBeNull()]
public static DAItemChangedPayload<TValue> FromEasyDAItemChangedEventArgs( 
   EasyDAItemChangedEventArgs<TValue> eventArgs
)
[CanBeNull()]
public:
static DAItemChangedPayload<TValue^>^ FromEasyDAItemChangedEventArgs( 
   EasyDAItemChangedEventArgs<TValue^>^ eventArgs
) 

Parameters

eventArgs
Event data.

The value of this parameter can be null (Nothing in Visual Basic).

Return Value

Returns an event payload containing the data from the event arguments.

This method can return null (Nothing in Visual Basic).

Remarks

In languages that support implicit conversions (such as C# or VB.NET), in many cases you do not have call this method explicitly. When indicated, a call to an available equivalent implicit conversion operator will be created by the compiler automatically.

Requirements

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

See Also