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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / Dispose Map Class
Finance | Project Operations, Human Resources, ...
Suggested Answer

Dispose Map Class

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Posted on by brianmaric


I need to use the map class in a loop where I need to create a new instance per iteration.  But I want to make sure that I dispose of the last instance.

MyMap = new Map(Types::Int64, Types::Container);


So I think setting the Map to null at the end of the loop should clear it for reuse at the beginning of the loop.

MyMap = null;

I think that does the trick.

Does that sound right or is there a better way?

Thanks

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  • Suggested answer
    Anton Venter Profile Picture
    Anton Venter 20,343 Super User 2025 Season 2 on at

    You don't have to explicitly dispose the Map object by setting to null or anything like that as the system will take of that for you. If your loop does not contain many iterations, you should in general be okay becaues the system should release the memory when the Map object goes out of scope. If you are concerned about possible over memory usage, you might conside using the X using statement.

    for (Counter cntr = 1; cntr < loopCount; cntr  ) //dummy loop
{
    using (Map m = new Map())
    {
        //do something
    }
}

  • Suggested answer
    Martin Dráb Profile Picture
    Martin Dráb 237,697 Most Valuable Professional on at

    It doesn't really matter. The only difference is that the object will stop being referenced a few microseconds earlier than if you overwrite the value at the beginning of the loop body. The actual garbage collection will likely happen much later.

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