具有嵌套GroupBox的RadioButtons行为

Question

我想知道是否可以将GroupBox用作纯粹的美学对象。简单地说，我有一个大的组合框，里面有许多小组框。他们都有单选按钮。我希望用户只能激活其中的一个单选按钮。

现在，在构建想要的用户界面之后，我有一个不受欢迎的行为，即单选按钮由最内层的组框决定，因此用户可以在每个小组框中激活一个。

我遵循指南，所以我不想修改用户界面的构造方式。我不确定嵌套组合框是否有意义，但我需要遵循这条路径。是否有一个显式属性来告诉哪个对象管理给定的单选按钮？

我正在使用Visual Studio 2010 Professional。

Answer 1

好吧，好吧，因为我看到没有提交答案，我以为我会...

此外，您的单选按钮的个别事件仍然是个人的，您也可以对它们进行更改，这样您就不会影响每个单选按钮。

更新：您可以在组框中嵌套组框或单独使用组框，您可以根据需要切换此行为。 。

 Public Class TestRadioButtons
 Private blnIsGroupBoxInGroupBox As Boolean = False

Private Sub Form2_Disposed(sender As Object, e As System.EventArgs) Handles Me.Disposed
    RemoveHandlers()
End Sub


Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load

    blnIsGroupBoxInGroupBox = False

    AddHandlers()


    For Each ctrl As Control In Me.Controls
        If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
            For Each rB As RadioButton In ctrl.Controls
                rB.AutoCheck = True
            Next
        End If
    Next

    For Each ctrl As Control In Me.Controls
        If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
            For Each rB As RadioButton In ctrl.Controls
                rB.Checked = False
            Next
        End If
    Next

End Sub


Private Sub PerformCheck(ByVal sender As Object, e As System.EventArgs)

    Select Case blnIsGroupBoxInGroupBox

        Case True
            For Each cntl As Control In Me.Controls
                If TypeOf (cntl) Is Windows.Forms.GroupBox Then
                    For Each con As Windows.Forms.GroupBox In cntl.Controls
                        For Each rB As RadioButton In con.Controls
                            If rB.Name.ToString = sender.name.ToString Then
                                If rB.Checked Then
                                    For Each cont As Control In Me.Controls
                                        If TypeOf (cont) Is Windows.Forms.GroupBox Then
                                            For Each gBox As Windows.Forms.GroupBox In cont.Controls
                                                For Each rButton As RadioButton In gBox.Controls
                                                    If Not rButton.Name.Equals(sender.Name.ToString) Then
                                                        rButton.Checked = False
                                                    End If
                                                Next
                                            Next
                                        End If
                                    Next
                                End If
                            End If
                        Next
                    Next
                End If
            Next
        Case Else
            For Each ctrl As Control In Me.Controls
                If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
                    For Each rB As RadioButton In ctrl.Controls
                        If rB.Name = sender.Name.ToString Then
                            If rB.Checked Then
                                For Each con As Control In Me.Controls
                                    If TypeOf (con) Is Windows.Forms.GroupBox Then
                                        For Each rButton As RadioButton In con.Controls
                                            If Not rButton.Name.Equals(sender.Name.ToString) Then
                                                rButton.Checked = False
                                            End If
                                        Next
                                    End If
                                Next
                            End If
                        End If
                    Next
                End If
            Next
    End Select

End Sub

Private Sub AddHandlers()

    Select Case blnIsGroupBoxInGroupBox

        Case True
            For Each ctrl As Control In Me.Controls
                If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
                    For Each con As Windows.Forms.GroupBox In ctrl.Controls
                        For Each rB As RadioButton In con.Controls
                            AddHandler rB.CheckedChanged, AddressOf PerformCheck
                        Next
                    Next
                End If
            Next
        Case Else
            For Each ctrl As Control In Me.Controls
                If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
                    For Each rB As RadioButton In ctrl.Controls
                        AddHandler rB.CheckedChanged, AddressOf PerformCheck
                    Next
                End If
            Next

    End Select

End Sub

Private Sub RemoveHandlers()
    If Me IsNot Nothing Then
        Select Case blnIsGroupBoxInGroupBox

            Case True
                For Each ctrl As Control In Me.Controls
                    If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
                        For Each con As Windows.Forms.GroupBox In ctrl.Controls
                            For Each rB As RadioButton In con.Controls
                                RemoveHandler rB.CheckedChanged, AddressOf PerformCheck
                            Next
                        Next
                    End If
                Next
            Case Else
                For Each ctrl As Control In Me.Controls
                    If TypeOf (ctrl) Is Windows.Forms.GroupBox Then
                        For Each rB As RadioButton In ctrl.Controls
                            RemoveHandler rB.CheckedChanged, AddressOf PerformCheck
                        Next
                    End If
                Next

        End Select
    End If
End Sub
End Class