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(menuItem.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);
上一篇:模块';keras.api._v2.keras.Experial';没有属性';PeepholeLSTMCell';模块、属性、amp、api
下一篇:获得使用UPnP invokeAction没有返回任何IP地址,求助?地址、UPnP、invokeAction、IP