Returning instance of resource class

Question

I have a method which return an instance of resource class, how can use the "using" statement to avoid resource leak?

public ResourceClass method()
    {
        return  new ResourceClass ();
    }

I hope my question is clear. Thanks in advance

What is `ResourceClass`? This: https://learn.microsoft.com/en-us/dotnet/api/microsoft.azure.documents.resource?view=azure-dotnet ?? — Jamiec, Jan 02 '19 at 13:47
Possible duplicate of [returning in the middle of a using block](https://stackoverflow.com/questions/662773/returning-in-the-middle-of-a-using-block) — thehennyy, Jan 02 '19 at 13:48
Possible duplicate of [How to create a list with different object type from json](https://stackoverflow.com/questions/54007364/how-to-create-a-list-with-different-object-type-from-json) — KoshVorlon, Jan 02 '19 at 14:07

score 2 · Answer 1 · answered Jan 02 '19 at 13:48

You can relegate the responsibility of disposing it to your caller by declaring your using block around the entire usage of the resource

public ResourceClass method()
{
    return new ResourceClass();
}

then

using(var s = method())
{
   //do something with s
}

Martin · Answer 2 · 2019-01-02T13:50:23.487

1

This is as simple as just utilising the method method to create the instance in your using statement:

public void YourMethod()
{
    using (ResourceClass Foo = method())
    {
        ...
    }
}

This will only work of course if ResourceClass implements IDisposable. Otherwise, your program won't compile.

edited Jan 02 '19 at 13:50

answered Jan 02 '19 at 13:47

Martin

How do you know ResourceClass implements `IDisposable`? – Jamiec Jan 02 '19 at 13:48
It won't compile if it doesn't implement `IDisposable`. – Martin Jan 02 '19 at 13:49

2 Answers2