Question

我是VB.Net的新手，我正在使用.Net Framework 2.0。我在VB.Net中有一个自定义对象，带有一些复杂的层次结构

考虑这是我的对象层次结构

Person
  Addresses
     Address[1]
          S.No 1
          Street
          ....
     Address[2]
          S.No 2
          Street
          ....
     Address[3]
          **S.No 4**
          Street
          ....
     Address[4]
          **S.No 3**
          Street
          ....

现在我想基于S.No对Address对象集合进行排序。我期待最终输出如下：

Person
  Addresses
     Address[1]
          S.No 1
          Street
          ....
     Address[2]
          S.No 2
          Street
          ....
     Address[3]
          **S.No 3**
          Street
          ....
     Address[4]
          **S.No 4**
          Street
          ....

Answer 1

如果＆＃34;地址＆＃34;您可以使用Array.Sort(T(), IComparer(Of T))来完成您的任务。是一个数组。如果是列表，您可以使用list.Sort(IComparer(Of T))方法。

示例代码为：

Class AddressComparer
    Implements IComparer(Of Address)

    Public Function Compare(x As Address, y As Address) As Integer Implements System.Collections.Generic.IComparer(Of Address).Compare
        ' Don't forget to handle "Nothing" values
        Return x.No.CompareTo(y.No)
    End Function
End Class

Sub Main()
    Dim addressesArray() As Address = New Address(3) {}
    addressesArray(0) = New Address(1, "1")
    addressesArray(1) = New Address(2, "2")
    addressesArray(2) = New Address(4, "4")
    addressesArray(3) = New Address(3, "3")
    Array.Sort(addressesArray, New AddressComparer())

    Dim addressesList As New List(Of Address)()
    addressesList.Add(New Address(1, "1"))
    addressesList.Add(New Address(2, "2"))
    addressesList.Add(New Address(4, "4"))
    addressesList.Add(New Address(3, "3"))
    addressesList.Sort(New AddressComparer())
End Sub

VB.Net对自定义对象进行排序

1 个答案: