How do I create a List in a reference?
MyClass classA = new MyClass();
myFuction(new List<MyClass>( ??? ))
How Can I add classA to that new List?
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7 Answers
Use
new List<MyClass>() {classA};
For collections, the elements inside the brackets will be executed using the add method (for "regular classes" they will be interpreted as properties)
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MyClass classA = new MyClass();
myFuction(new List<MyClass>() { classA } ) ;
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How about a simple:
List<MyClass> classList = new List<MyClass>();
classList.Add(classA);
5 Comments
D Stanley
I think the OP wants to inline it into the method call.
gunr2171
@DStanley, while true, I would prefer this method myself. Also this is the only post that is different.
Voidpaw
This is the neater way to do it imho, but that will always be a point of discussion amongst coders.
D Stanley
Why write three lines of code when you can write one that's just as readable?
Voidpaw
Because it looks a lot neater when you ulscale the
You can also work with anonymous data like this:
var myList = new List<object>() { new { Location = 1, Name = "myName"}, new {Location = 2, Name = "myName2" } }
saves you a couple of lines
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new List<MyClass>(){classA}
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This should work
MyClass classA = new MyClass();
return new List<MyClass>().Add(classA);
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When a method is required to pass the list and you have only one item
var apps = GetApps(new List<int> { item.Id });When you have to add an item in a loop
var appList = new List<App>(); foreach (var savedItem in savedItems) { appList.Add(new App{ Name = savedItem.Name}); }
