净ToolStripMenuItem - 如何访问点击事件产生的项目，而正在加载形式（在运行时） [英] .Net ToolStripMenuItem - how to access click-event for items generated while form is being loaded (in runtime)

问题描述

我有一个在它的加载事件中检索数据并填充某些菜单项的形式。我使用的添加菜单项

  Viewer.AudioTrackToolStripMenuItem.DropDownItems.Add（myvalue的）
 

创建的菜单项的数量并不总是相同的。有时他们是2，其他时间他们是4取决于正在检索的数据。

由于菜单项中运行时创建的，我怎么能现在拦截，当用户点击/选择一个菜单项（我的意思是我不知道该控件的名称和它的点击事件）。如果菜单项是前手知，我会简单地创建菜单项在设计时，我有我的点击事件，但现在我不知道。

任何帮助将是AP preciated。谢谢你。

编辑：你让我上赛道，但我还是得到了一些错误信息。只是为了澄清，在code是如下：

  myvalue的= TextBetween（值1，S |，| E）'myvalue的是一个函数的结果
                                          '其中myvalue的是一个字符串
myValue.click + =新System.EventHandler（myValue_Click）错误
Me.AudioTrackToolStripMenuItem.DropDownItems.Add（myvalue的）
 

现在，如果我跑了code，我得到了以下错误：

1）'点击'不是'字符串

中的一员

2）委托System.EventHandler需要AddressOf前pression或λEX pression作为唯一的参数传递给它的构造。

难道上面的错误是因为我的菜单项被命名为根据结果从一个变量（myvalue的）？

EDIT2：我得到的一切使用以下code工作：

 昏暗的菜单项作为ToolStripMenuItem
myvalue的= TextBetween（值1，S |，| E）
菜单项=新ToolStripMenuItem（myvalue的）
Me.AudioTrackToolStripMenuItem.DropDownItems.Add（MenuItem.ToString，没什么，AddressOf ToolStripMenuItem_Click）
 

然后，我增加了以下子：

 私人小组ToolStripMenuItem_Click（BYVAL发件人为System.Object的，BYVALË作为System.EventArgs）
昏暗菜单项作为ToolStripMenuItem = TryCast（发件人，ToolStripMenuItem）
    如果菜单项状态并没有任何然后
          项目刚刚点击。
          的MessageBox.show（menu​​Item.Text）
    结束如果
结束小组
 

解决方案

定义myvalue_click的方法来处理所有myvalue的点击。添加事件编程处理，如：

  this.myValue.Click + =新System.EventHandler（this.myValue_Click）;
 

I have a form which upon its loading events retrieves data and populates some menu-items. I am adding menu-items using

Viewer.AudioTrackToolStripMenuItem.DropDownItems.Add(myValue)

The number of menu-items created are not always the same. Sometimes they are 2, other times they are 4 depending on the data being retrieved.

Since the menu-items are created during "run-time", how can I now intercept when a user click/select a menu-item (I mean I don't know the name of the control and its click-event). If the menu-items were known before-hand, I would simply create the menu-item in design-time and I would have my click-event but now I don't.

Any help would be appreciated. Thank you.

Edit: you got me on track but I still got some error-messages. Just to clarify, the code is as follows:

myValue = TextBetween(value1, "s|", "|e") 'myValue is the result of a function
                                          'where myValue is a string
myValue.click += New System.EventHandler(myValue_Click) 'ERROR
Me.AudioTrackToolStripMenuItem.DropDownItems.Add(myValue)

Now if I run the code I get the following errors:

1) 'click' is not a member of 'String'

2) Delegate 'System.EventHandler' requires an 'AddressOf' expression or lambda expression as the only argument to its constructor.

Could above errors be because my menu-items are named in accordance with a result from a variable (myValue)?

edit2: I got everything working by using the following code:

Dim menuItem As ToolStripMenuItem
myValue = TextBetween(value1, "s|", "|e")
menuItem = New ToolStripMenuItem(myValue)
Me.AudioTrackToolStripMenuItem.DropDownItems.Add(MenuItem.ToString, Nothing, AddressOf ToolStripMenuItem_Click)

then I added the following sub:

Private Sub ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim menuItem As ToolStripMenuItem = TryCast(sender, ToolStripMenuItem)
    If menuItem IsNot Nothing Then
          'item just clicked. 
          MessageBox.Show(menuItem.Text)
    End If
End Sub

解决方案

Define myvalue_click method to handle all myValue clicks. Add event handles programmatically, like:

this.myValue.Click += new System.EventHandler(this.myValue_Click);  

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