How to check if a list of object contains an object with a specified properties

Question

I have a list of duplicates object:

var duplicates = workspace.Maps.GroupBy(m => m.sFolder).SelectMany(grp => grp.Skip(1)).ToList();

I want an if statement to check if the list contains an object with a particular properties:

if (duplicates.Contains(myObject.sFolder)) // "myObject.sFolder" raise an error (of course)
{
 // Do stuff
}

Is there a simple way to do it?

• Salah Akbari: What do you mean by i can't do that like this exactly?
• Monolithcode: Not sure on whats being compared here but something like this? if (duplicates.Any(x => x.sFolder == myObject.sFolder)) // But i can't do that like this... { // Do stuff }
• Maher Fattouh: Why not use a for loop and break once you find the duplicate if you expect one match at max
• Thomas: @S.Akbari Sorry i've updated my question

Answer 1

You can check by this way

if (duplicates.Any(a => a.sFolder == myObject.sFolder))
{
 // Do stuff
}

Answer 2

Not sure on whats being compared here but something like this?

if (duplicates.Any(x => x.sFolder == myObject.sFolder)) 
{
 // Do stuff
}

Answer 3

Just in case you need the duplicate object for further inspection try

var duplicate = duplicates.FirstOrDefault(m => m.sFolder == myObject.sFolder);
if(duplicate != null)
{
 // Further check duplicate
}

Answer 4

You can use foreach

 foreach (var item in duplicates)
 {
 if (item.sFolder == myObject.sFolder )
 {
 // Do stuff
 break;
 }
 }