returning in the middle of a using block

Question

Something like:

using (IDisposable disposable = GetSomeDisposable())
{
    //.....
    //......
    return Stg();
}

I believe it is not a p

Answer 1

The code bellow shows how using is working:

private class TestClass : IDisposable
{
   private readonly string id;

   public TestClass(string id)
   {
      Console.WriteLine("'{0}' is created.", id);
      this.id = id;
   }

   public void Dispose()
   {
      Console.WriteLine("'{0}' is disposed.", id);
   }

   public override string ToString()
   {
      return id;
   }
}

private static TestClass TestUsingClose()
{
   using (var t1 = new TestClass("t1"))
   {
      using (var t2 = new TestClass("t2"))
      {
         using (var t3 = new TestClass("t3"))
         {
            return new TestClass(String.Format("Created from {0}, {1}, {2}", t1, t2, t3));
         }
      }
   }
}

[TestMethod]
public void Test()
{
   Assert.AreEqual("Created from t1, t2, t3", TestUsingClose().ToString());
}

Output:

't1' is created.
't2' is created.
't3' is created.
'Created from t1, t2, t3' is created.
't3' is disposed.
't2' is disposed.
't1' is disposed.

The disposed are called after the return statement but before the exit of the function.