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Thread: Show items in Listview of other form
Started 1 month, 1 week ago by Gagan.20
Hi all. I'm searching files whose code is written in form1 and displaying these files in the listview of form2. This code is written in form2 : Private Sub BGWorker_DoWork( ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BGWorker.DoWork For Each file As String In My.Computer.FileSystem.GetFiles(drive.Name, FileIO....
Site: CodeProject: Discussion Boards. Free source code and programming help  CodeProject: Discussion Boards. Free source code and programming help - site profile
Forum: Visual Basic / VB.NET  Visual Basic / VB.NET - forum profile
Total authors: 2 authors
Total thread posts: 12 posts
Thread activity: no new posts during last week
Domain info for: codeproject.com

Other posts in this thread:

Christian Graus replied 1 month, 1 week ago
Where does frmMain come from ? Why not use a delegate ?
Size: 93 bytes
Customize:  Customize "<b>Reply 1</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Gagan.20 replied 1 month, 1 week ago
frmmain is the main form of program. where should I use a delegate?
Size: 103 bytes
Customize:  Customize "<b>Reply 2</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Christian Graus replied 1 month, 1 week ago
does frmmain magically refer to the main form in VB.NET ? If not, it's a variable. What's the code that sets it's value ?
Size: 160 bytes
Customize:  Customize "<b>Reply 3</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Gagan.20 replied 1 month, 1 week ago
See....frmMain is the main form and appears when program starts. Now when user search a file, form2 appears and actual code is written in form2 for searching files. But after searching files from form2 I want to display result on the listview of frmMain.
Size: 290 bytes
Customize:  Customize "<b>Reply 4</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Christian Graus replied 1 month, 1 week ago
But this code is inside form2. frmMain is a variable inside form2. So, how is that variable's value set ? Where is it defined ?
Size: 167 bytes
Customize:  Customize "<b>Reply 5</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Gagan.20 replied 1 month, 1 week ago
frmMain is not a variable. It is main form.
Size: 73 bytes
Customize:  Customize "<b>Reply 6</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Christian Graus replied 1 month, 1 week ago
So the listview is a shared variable ?
Size: 76 bytes
Customize:  Customize "<b>Reply 7</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Gagan.20 replied 1 month, 1 week ago
Yes. Listview is a shared control drawn on frmMain.
Size: 81 bytes
Customize:  Customize "<b>Reply 8</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Christian Graus replied 1 month, 1 week ago
Wow - that's a bit of VB nastiness I didn't know about. So, what happens if you have more than one instance of the frmMain class ? Anyhow, VB sucks. You want to create a delegate so you can call it in your second form, and it calls a method in the first form, passing through the data.
Size: 338 bytes
Customize:  Customize "<b>Reply 9</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

Gagan.20 replied 1 month, 1 week ago
There is only a single instance of frmMain class. Yes I want to use a delegate to show searched files on the listview of frmMain.
Size: 165 bytes
Customize:  Customize "<b>Reply 10</b>: Show items in Listview of other form :: Visual Basic / VB.NET :: CodeProject: Discussion Boards. Free source code a..."

 

Top contributing authors

Name
Posts
Christian Graus
6
user's latest post:
Show items in Listview of other...
Published (2009-11-04 00:47:00)
Gagan.20 wrote: There is only a single instance of frmMain class. Yes, but I just did a test and found that while in C#, I'd tell anyone who made their form controls static that that is a TERRIBLE design, it seems in VB it does that for you. And, given that VB is doing it, what happens if I have more than one instance of a form ? It's insane. VB sucks. OK, well, have you read up on delegates ? I'll be honest, I know a delegate...
Gagan.20
6
user's latest post:
Show items in Listview of other...
Published (2009-11-04 00:45:00)
There is only a single instance of frmMain class. Yes I want to use a delegate to show searched files on the listview of frmMain.

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