Is it possible to force the use of “using” for disposable classes?

Question

I need to force the use of \"using\" to dispose a new instance of a class.

public class MyClass : IDisposable
{
   ...
}

using(MyClass obj = new MyClass())          


        

Answer 1

If you want to force the disposal of resources withing a scope it's possible, but IDisposable is not really needed. With the following code:

public class ResourceHandle
{
    public delegate void ResourceProvider(Resource resource);

    private string _parms;

    public ResourceHandle(string parms)
    {
        _parms = parms;
    }

    public void UseResource(ResourceProvider useResource)
    {
        Resource resource = new Resource(_parms);
        useResource(resource);
        resource.Close();
    }
}


public class Resource
{
    private string _parms;

    internal Resource(string parms)
    {
        // Initialize resource
    }

    internal void Close()
    {
        // Do cleaning
    }

    // Public methods of resource
}

You can use the Resource ONLY in this way:

public void foo()
{
    ResourceHandle resourceHandle = new ResourceHandle("parms");

    resourceHandle.UseResource(delegate(Resource resource)
        {
            // use resource
        });
}

As you can see IDisposable is not really needed here.