oh wait, you have a propety called 'Url' added to it ? So thats why you check for content.Url ?

Is the Url a linkpicker? If so, then you probably should check on

content.Url.Url()

as content.Url properly returns the type always, hence it always triggers the first option in your if/else

You could test if you type

@content.Url

in front of your if/else, then you'll see what is being checked

this is where i want to implement logic, thanks in advance

But you need to knowe what content.Url is currently, I THINK its a mediapicker(it looks like it), So i THINK it should work if you change your first attempt, (the one with the if/else), to:

csharp
if(string.isNullOrWhiteSpace(content.Url.Url()))

it might work

however, I would not advice to name your MediaPicker 'Url', as it's not only the Url thats returned, but an entire Media object. I'd recommend to naming it something like 'image' for easier usage

its using single url picker as property editor , my bad