PersonInfo类:
public class PersonInfo { public int Index; public string Name; public override string ToString() { return string.Format("Index:{0}, Name:{1}", Index, Name); } }
PersonInfoCompareByName比较类:
public class PersonInfoCompareByName : IEqualityComparer<PersonInfo> { public bool Equals(PersonInfo x, PersonInfo y) { if (x != null && y != null && x.Name == y.Name) return true; return false; } public int GetHashCode(PersonInfo obj) { if (obj == null) { return 0; } else { return obj.Name.GetHashCode(); } } }
下面的代码是新建一个列表,然后去除重复项:
private void Button_Click(object sender, RoutedEventArgs e) { List<PersonInfo> PersonList = new List<PersonInfo>(); for (int i = 0; i < 10; i++) { for (int j = 0; j < 3; j++) { var info = new PersonInfo(); info.Index = j; info.Name = "Name" + i; PersonList.Add(info); } } var items = PersonList.Distinct(new PersonInfoCompareByName()); foreach (var item in items) { Console.WriteLine(item.ToString()); } }