list object if contain one value then return another one c#

Question

Hello,

 

I have list items

The Priority list's object may contain 1 or 2 or 3.

 

If Priority contain 1 then return "Low"

If Priority contain 2 then return "Medium"

If Priority contain 3 then return "High"

 

I have tried... 

public class DocumentsUser
    {
  public string Priority { get; set; }
}

List<DocumentsUser> objUserSetUp = objUserSetUp1.Select(m => new DocumentsUser()
                {
 Priority = m.Priority == 3 ? "High" : "Low", //Here I want to manage that contition.
}

 How can I do that?