vb.net - 单击列表视图子项并打开窗口
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vb.net - click on listview subitem and open window
提问by J_D
I'm not sure if this is possible after doing a bunch of googling, but hopefully it is. I have an application that pulls a list of information from a MySQL database and populates a listview (Unfortunately, I can't change to a datagrid at this time.) What I'm tasked to do is make it so that when clicking on a certain column, a window will open and, based on the ID of the row that was clicked on, retrieve another set of results from the same database.
在做了一堆谷歌搜索之后，我不确定这是否可能，但希望是。我有一个应用程序，它从 MySQL 数据库中提取信息列表并填充列表视图（不幸的是，我目前无法更改为数据网格。）我的任务是制作它以便在单击特定列，将打开一个窗口，并根据单击的行的 ID，从同一数据库中检索另一组结果。
The list view is created as such:
列表视图是这样创建的：
Do While result.Read()
Dim siteid = (result.Item("idsite").ToString())
Dim sitename = (result.Item("name").ToString())
Dim last_import_date = (result.Item("import_finished").ToString())
Dim last_import_file = (result.Item("file_name").ToString())
Dim last_line = (result.Item("last_line").ToString())
Dim status = (result.Item("status").ToString())
Dim lv As ListViewItem = ListView1.Items.Add(siteid)
lv.SubItems.Add(sitename)
lv.SubItems.Add(last_import_date)
lv.SubItems.Add(last_import_file)
lv.SubItems.Add(last_line)
lv.SubItems.Add(status)
Loop
So preferably I'd like to click on "Last_import_file" and have that open the window. I've tried a bunch of ItemClicked type commands, but haven't had much luck.
所以最好我想点击“Last_import_file”并打开窗口。我尝试了一堆 ItemClicked 类型的命令，但运气不佳。
Is what I'm attempting possible? I don't need any special text formatting, just want to register the click and pop open the dialog.
我正在尝试的可能吗？我不需要任何特殊的文本格式，只想注册点击并弹出对话框。
Thanks!
谢谢！
回答by Alex
Yes it is possible. To do this in a Listview it is a bit more complicated than a DataGridView. You'll need to make use of the ListViewHitTestInfoclass. Using the MouseDownEvent of your listview, use this code:
对的，这是可能的。要在 Listview 中执行此操作，它比 DataGridView 复杂一些。你需要利用这个ListViewHitTestInfo类。使用MouseDown列表视图的事件，使用以下代码：
Private Sub ListView1_MouseDown(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseDown
Dim info As ListViewHitTestInfo = ListView1.HitTest(e.X, e.Y)
MsgBox(info.Location.ToString())
If Not IsNothing(info.SubItem) Then
'info will contain the information of the clicked listview column. You can then go through it's subitems for more information, if any.
End If
End Sub
