[ACCEPTED]-Sort Generic list on two or more values-lambda

Accepted answer

Score: 40

EDIT Just realized this was a VB question. Here 2 is the VB.Net solution

Dim list = GetSomeList()
Dim sorted = list. _
  OrderBy(Function(x) x.Popular). _
  ThenBy(Function(x) x.Clicked). _
  ThenBy(Function(x) x.Name)

C# version. Try the 1 following

var list = GetSomeList();
var sorted = list.OrderBy(x => x.Popular).ThenBy(x => x.Clicked).ThenBy(x => x.Name);

Score: 6

To answer your question about a lambda expression, that 4 is too complex to put in a lambda expression, as 3 VB doesn't support multi-line lambda expressions.

For 2 a non-LINQ solution:

You need a named method 1 as a comparer:

Private Function Comparer(ByVal x As Product, ByVal y As Product) As Integer
    Dim result As Integer = x.Popular.CompareTo(y.Popular)
    If result = 0 Then
        result = x.Clicked.CompareTo(y.Clicked)
        If result = 0 Then
            result = x.Name.CompareTo(y.Name)
        End If
    End If
    Return result
End Function

Usage:

theList.Sort(AddressOf Comparer)

Score: 5

List<Product> sortedProducts = null;
sortedProducts = products.OrderBy(p => p.Popular)
                         .ThenByDescending(p => p.Clicked)
                         .ThenBy(p => p.Name)
                         .ToList();

Score: 4

I'm sorry but do you know any C#?

products.OrderBy(p => p.Popular).
    ThenByDescending(p => p.Clicked).
    ThenBy(p => p.Name);

Can you 1 get what you need from this?

Score: 0

A compound sort can also be done with the 2 List.Sort lambda function. Here is a vb.Net 1 example:

    Dim Conts As List(of clsContact)
    Conts.Sort(Function(C1 As clsContact, C2 As clsContact)
        Dim CompRes As Integer = C1.Contact_LastName.CompareTo(C2.Contact_LastName)
        If CompRes = 0 Then
            CompRes = C1.Contact_FirstName.CompareTo(C2.Contact_FirstName)
        End If

        Return CompRes
    End Function)

Source: stackoverflow.com

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