OPC Studio User's Guide and Reference
FromFailed Method (DAVtqResult)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.OperationModel Namespace > DAVtqResult Class : FromFailed Method
The failed operation result.
Creates a new instance of the OPC-DA VTQ result from a given failed operation result.
Syntax
'Declaration
 
<NotNullAttribute()>
Public Shared Function FromFailed( _
   ByVal failedOperationResult As OperationResult _
) As DAVtqResult
'Usage
 
Dim failedOperationResult As OperationResult
Dim value As DAVtqResult
 
value = DAVtqResult.FromFailed(failedOperationResult)
[NotNull()]
public static DAVtqResult FromFailed( 
   OperationResult failedOperationResult
)
[NotNull()]
public:
static DAVtqResult^ FromFailed( 
   OperationResult^ failedOperationResult
) 

Parameters

failedOperationResult
The failed operation result.

Return Value

An OPC-DA VTQ result with the same state and exception as the operation result passed in.
Exceptions
ExceptionDescription

One of the arguments provided to a method is not valid.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

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