Question

I have class called GroupSelect and made a collection List(Of GroupSelect)().

Now I need find to RowNo = 4 in List(Of GroupSelect)() and get GroupSelect object.

Public Class GroupSelect
Public Property RowNo() As Integer
    Get
        Return m_RowNo
    End Get
    Set(ByVal value As Integer)
        m_RowNo = value
    End Set
End Property
Private m_RowNo As Integer
Public Property GroupNo() As Integer
    Get
        Return m_GroupNo
    End Get
    Set(ByVal value As Integer)
        m_GroupNo = value
    End Set
End Property
Private m_GroupNo As Integer

End Class

How can I do that?

Answer 1

Make sure you are using System.Linq and then it’s as easy as:

list.FirstOrDefault(Function(item) item.RowNo = 4)

Or if you aren’t familiar with the predicate syntax

(From item In list Where item.RowNo = 4 Select Item).FirstOrDefault())

EDIT: Changed to VB syntax, which is notepad-compiled 🙂