using in c#
Author
I just stumbled over this code:
using (WinForm our_dx_form = new WinForm())
{
Application.Run(our_dx_form);
}
Now Im curious as to what using is doing here and whats different between this and just
WinForm our_dx_form = new WinForm();
Application.Run(our_dx_form);
Im used to c++ and this doesnt tell me anything.
"using" is a special keyboard to use on items that implement the IDisposable interface. You can tell these classes because they have a Dispose() method in them to free / clean up resources. At the end of the using() {} statement, C# will call the object's Dispose() method.
So using your code, this is what happens:
You can also declare multiple items in the using statement like so:
Hope that's clear.
So using your code, this is what happens:
using (WinForm our_dx_form = new WinForm()){ Application.Run(our_dx_form);}// our_dx_form.Dispose() is called because the item has gone out of scope.You can also declare multiple items in the using statement like so:
using(Item one = new Item, Item two = new Item){ // Use them}// one.Dispose() and two.Dispose() are called because the items have gone out of scope.Hope that's clear.
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