BindingNavigatorAddNewItem已禁用 [英] BindingNavigatorAddNewItem is disable

问题描述

我只是想知道我的绑定导航器plus在我运行我的应用程序时被禁用了，请您帮忙，

这是我的课:

Hi,

I just wonder my binding navigator plus is disable when I run my application, I need your help guys, please,

Here is my class:

Interface DIc
    Property meaning() As String
    Property word() As String
End Interface
 
<serializable()> Public Class Class1
    Private word As String
    Private meaning As String
    Public Sub New(ByVal cWord As String, ByVal cMeaning As String)
        word = cWord
        meaning = cMeaning
    End Sub
    Public Property pWord() As String
        Get
            Return Me.word
        End Get
        Set(ByVal value As String)
            Me.word = value
        End Set
    End Property
    Public Property pMeaning() As String
        Get
            Return Me.meaning
        End Get
        Set(ByVal value As String)
            Me.meaning = value
        End Set
    End Property
    Public ReadOnly Property Full() As String
        Get
            Return Me.word & " " & Me.meaning
        End Get
    End Property
End Class

这是我的表格代码

and this is my form code

Imports ClassLibrary1.Class1
Imports ClassLibrary1
Imports System.IO
 

Public Class Form1
    Dim bf As New BinaryFormatter
    Dim Ar As New ArrayList
    Dim BS As New BindingSource
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Ar.Add(New Class1("A", "Apple"))
        Ar.Add(New Class1("B", "Book"))
        bs.DataSource = Ar
 
        ComboBox1.DataSource = bs
        ComboBox1.DisplayMember = "pWord"
        TextBox2.DataBindings.Add("Text", bs, "pMeaning", True)
        BindingNavigator1.BindingSource = bs
       
    End Sub
End Class

推荐答案

如果不使用BindingSource，则需要显式设置BindingContext属性.正如名称"BindingNavigator"所暗示的，必须进行某种绑定.还要注意，BindingNavigator只是一个专门的ToolStrip.如果您不想使用绑定任何东西，那么只需使用所需的功能创建自己的ToolStrip.

这可能是造成您问题的根本原因.

If you don''t use a BindingSource then you''d need to set the BindingContext property explicitly. There has to be some sort of binding going on, as the name "BindingNavigator" suggests. Note also that the BindingNavigator is simply a specialised ToolStrip. If you don''t want to use bind anything then just create your own ToolStrip with the functionality you do want.

It might be the root cause for your problem.

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