OPC Studio User's Guide and Reference
DisposeGuard(Action) Method



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib Namespace > DisposableObject Class > DisposeGuard Method : DisposeGuard(Action) Method
The action to be invoked.

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

Invokes the specified action if the object is not disposed, throwing an exception otherwise.
Syntax
'Declaration
 
<JetBrains.Annotations.AssertionMethodAttribute()>
Protected Overloads Sub DisposeGuard( _
   ByVal action As Action _
) 
'Usage
 
Dim instance As DisposableObject
Dim action As Action
 
instance.DisposeGuard(action)
[JetBrains.Annotations.AssertionMethod()]
protected void DisposeGuard( 
   Action action
)
[JetBrains.Annotations.AssertionMethod()]
protected:
void DisposeGuard( 
   Action^ action
) 

Parameters

action
The action to be invoked.

The value of this parameter cannot be 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.

An operation was performed on a disposed object.
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