COM+ Context Attributes
You can decorate
(apply attributes to) your class with two context-related attributes.
The attribute
MustRunInClientContext
informs COM+ that the class must be
activated in its creator’s context:
[MustRunInClientContext(true)] public class MyComponent :ServicedComponent {...}
When you register the class above with COM+, the “Must be
activated in caller’s context” checkbox on the
component’s Activation tab is selected in the Component
Services Explorer. If you do not use this attribute, the registration
process uses the default COM+ setting when registering the component
with COM+ —not enforcing same-context activation. As a result,
using MustRunInClientContext
with a
false
parameter passed to the constructor is the
same as using the COM+ default:
[MustRunInClientContext(false)]
Using attributes with the COM+ default values (such as constructing
the MustRunInClientContext
attribute with
false
) is useful when you combine it with the
/reconfig
switch of RegSvcs. For example, you can
undo any unknown changes made to your component configuration using
the Component Services Explorer and restore the component
configuration to a known state.
The MustRunInClientContext
attribute class has an
overloaded default constructor. If you use
MustRunInClientContext
with no parameters, the
default constructor uses true
for the attribute value. As a result, the following two
statements are equivalent:
[MustRunInClientContext] [MustRunInClientContext(true)]
The second COM+ context-related ...
Get COM & .NET Component Services now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.