Lambda expression to get list of members from list of objects?

Question

I am using VS 2008.

I have a little user control that has a method whose argument is of type List<String>. I have a list of objects (call it MyObjectList, of type List<MyObject>) whose definition includes one String member (call it myString).

I want to get a List<String> that contains all of the myString strings from MyObjectList.

Of course, I can write a little loop that walks through MyObjectList, adding every myString value to a List<String> object. But I am trying to be as modern as I can.

With the advent of lambda expressions, I think there must be a better way to do this. Is there? If so, how? And is the answer any different in VS 2012?

Jon · Accepted Answer · 2012-10-10 19:44:04Z

4

Assuming that your list is a List<MyObject> and that class MyObject has a property MyString, you could use LINQ and a lambda to do this:

var listOfStrings = myObjectList.Select(o => o.MyString).ToList();

This will work in any assembly that targets .NET 3.0 or greater; the version of VS doesn't matter.

answered Oct 10, 2012 at 19:44

Jon

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