Is it possible to set the listbox data source only for the list <Tuple <string, string, int >> Item1?

Question

I have

public static class GlobalVariables { public static List<Tuple<string, string, int>> PopFile; } 

and I'm trying to use PopFile as a data source for listbox

 listBox1.DataSource = GlobalVariables.PopFile; 

The problem is that it explicitly adds ([string], [string], [int]) to the list, but I want to add only the first elements of the tuples. Is it possible?

I could use

 foreach (Tuple<string, string, int> i in GlobalVariables.PopFile) { listBox1.Items.Add(i.Item1); } 

but I would prefer .DataSource.

Answer 1

 listBox1.DataSource = GlobalVariables.PopFile; listBox1.DisplayMember = "Item1"; listBox1.ValueMember = "Item3"; // optional 

https://msdn.microsoft.com/en-us/library/system.windows.forms.listcontrol.datasource

Answer 2

In the end, you cannot escape the loop and individually add your data from your tuple or create a new object to bind to the list.

Listbox just doesn’t have input for entering a tuple if you yourself do not extend the Listbox object to be able to handle it accordingly, but even then you still have to do something similar to your loop above.

Answer 3

LINQ may come in handy ...

 listBox1.DataSource = GlobalVariables.PopFile.Select(t => t.Item1).ToList()