如何在 vb.net 中获取对象的名称

Question

我正在尝试在表单中动态添加和删除对象。我被困在如何获取要删除的对象的唯一标识符上。

        'Collection of controls
        For Each ctl In Me.Controls
            'Get control type
            If TypeOf ctl Is Label Then
                'Get control name/index id/text or any property of current ctl
                'How do I continue from here?
                'Me.Controls.Remove(ctl)
            End If
        Next

提前感谢solutions/suggestions。如果可以，我想知道解决方案的解释。

如果你们需要知道我是如何动态添加对象的，这里是：

        For i = 1 To Spots
            Dim newLabel As New Label
            Dim newLoc As Integer = iLoc + (i * 30)

            With newLabel
                .Name = "lblSpot" & i
                .Text = "Spot " & i
                .Size = New Size(100, 20)
                .Location = New Point(3, newLoc)
            End With

            AddHandler Me.Load, AddressOf frmParking_Load
            Me.Controls.Add(newLabel)
        Next

Answer 1

您可以将 ctl 转换为 Label，然后使用 .Name 找到要删除的控件

Answer 2

不建议在更改收集时使用 For Each，所以这是您想要的代码

Dim i = 0
While i < Me.Controls.Count
    Dim c = Me.Controls(i)
    If TypeOf c Is Label Then
        Dim Lbl As Label = CType(c, Label)
        If Lbl.Name.Contains("lblSpot") Then
            Me.Controls.Remove(c)
        End If
    End If
End While

如何在 vb.net 中获取对象的名称

How to get the object's name in vb.net

vb.net

properties

object