OPC Studio User's Guide and Reference
PerformOperation<T,TOperationException>(Func<T>) Method



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.OperationModel Namespace > ValueResult Class > PerformOperation Method : PerformOperation<T,TOperationException>(Func<T>) Method
The type of the value.
The type of operation exception to catch.
The operation to perform.

The value of this parameter cannot be null (Nothing in Visual Basic).

Performs the specified operation and return the corresponding value result.
Syntax
'Declaration
 
<JetBrains.Annotations.NotNullAttribute()>
Public Overloads Shared Function PerformOperation
    (Of T,TOperationException As OperationException)( _
   ByVal operationFunction As Func(Of T) _
) As ValueResult(Of T)
'Usage
 
Dim operationFunction As Func(Of T)
Dim value As ValueResult(Of T)
 
value = ValueResult.PerformOperation(Of T, TOperationException)(operationFunction)
[JetBrains.Annotations.NotNull()]
public static ValueResult<T> PerformOperation<T,TOperationException>( 
   Func<T> operationFunction
)
where TOperationException: OperationException
[JetBrains.Annotations.NotNull()]
public:
static ValueResult<T^>^ PerformOperationgeneric<typename T>
generic<typename TOperationException>
( 
   Func<T^>^ operationFunction
) 
where TOperationException: OperationException

Parameters

operationFunction
The operation to perform.

The value of this parameter cannot be null (Nothing in Visual Basic).

Type Parameters

T
The type of the value.
TOperationException
The type of operation exception to catch.

Return Value

Returns the value result for the performed operation.

This method never returns null (Nothing in Visual Basic).

Exceptions
ExceptionDescription

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