How to extract an array from a List of anonymous objects

Question

Could anyone please help with the following:

If I have a list declared as follows:

List<(uint u, string s)> list1 = new List<(uint u, string s)>();

Is there a succinct LINQ statement that could extract a list of the uints in my list?

For example, if my list was initialised as:

list1.Add((1,"One"));
list1.Add((2,"Two"));
list1.Add((3,"Three"));

How could I crate a List containing the numbers {1,2,3}

At the moment I create an array of uints an loop through the array, but how could this be done using LINQ?

Thanks for any help, Mitch.

Ousmane D. · Accepted Answer · 2020-05-28 15:11:01Z

2

Use a Select for projection and ToList to accumulate to a list.

var result = list1.Select(x => x.u).ToList();

answered May 28, 2020 at 15:11

Ousmane D.

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1 Comment

Thanks very much for such a quick response. Works perfectly.