Create a list of random values from given list in C# (MVC2)

Question

I have a simple model

public class OneModel
   {
      public string Email { get; set; }

      public string Name { get; set; }
   }

And I created a simple list (OneModel datatype):

List<OneModel> someLists = new List<OneModel>{
            new OneModel{Name="A 1", Email="[email protected]"},
            new OneModel{Name="A 2", Email="[email protected]"},
            new OneModel{Name="A 3", Email="[email protected]"},
            new OneModel{Name="B 1", Email="[email protected]"},
            new OneModel{Name="C 1", Email="[email protected]"},
  }

I want to create another list with random concatenated Name from first list, like as: List<string> ... {"A 1-A 3", "A 2-C 1",...} or something like that.

How to do that ?

Anders Tornblad · Accepted Answer · 2011-12-20 09:50:32Z

3

Assuming .NET Framework 4.0:

var random = new Random();
var result = new List<string>();
var count = random.Next(10, 20); // How many results do you want, really!?
for (int i = 0; i < count; ++i) {
    var query = from item in someLists
                order by random.Next()
                select item.Name;
    var items = query.Take(2);   // I assume you want two "names" in each item
    result.Add(string.Join("-", items));
}

Examine result for your random-length list of random randomness...

But what do you need it for...?

edited Dec 20, 2011 at 9:50

answered Dec 20, 2011 at 8:56

Anders Tornblad

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1 Comment

Snake Eyes Over a year ago

I want to learn more about list and get random values from generic list.

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