Windows - Winform Listview Columns Not Showing Up?
Feb 14, 2011
I'm trying to put a listview on a VS 2010, vb.net winform form. I
1. drug the listview from the toolbox to the form.
2. right cick and did an edit columns
3. added two columns with the names of (chLocationID, chLocation) and the text of LocationID and Location.
4. when i click ok, nothing shows up in the listview designer.
In the code behind i did a for loop to add some data.
For Each O In oS
Dim itm As New ListViewItem
itm.SubItems.Add(O.tblLocationID.ToString)
itm.SubItems.Add(O.Location)
itm.Tag = O
lvLocation.Items.Add(itm)
Next
when i step through the code.. it says that it adds the row.. a lvLocation.items.count give me a value of 1.. which is correct but nothing displays on the screen.
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Mar 29, 2012
have 6 columns in my listview that should show the data from the database.. but when i coded it like this :
Public Sub showmyrecords()
Dim dt As New DataTable
Dim ds As New DataSet
[code].....
it shows the first row data(database) in the first column of my listview... how should i solve this problem?
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Mar 12, 2009
Showing Command Prompt On Winform Control
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Feb 15, 2009
I would like to know if it is possible if the columns of the listview can be resized automatically based on the information in the listview?
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May 6, 2009
How do you disable additional checkbox selections/deselections without sacrificing the functionality of the ListView? I know you can call: ListView.Enabled = False, but that also disables any scrolling within it.
For example: I have a timer that starts a backup based on the Listview items that are checked. After a certain time, I don't want the end-user to be able to click on any of the checkboxes within the listview (so I have a set number of items to backup), but I do want them to be able to scroll the list while the backup is being performed. I tried this[code]...
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Feb 8, 2012
I have a request to show a grid similar to a calendar showing on columns the day and on row months.
Something like this
Month |Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|Mon|Tue|Wed|Thu|Fri|Sat|Sun|Mon|Tue|Wed|...|Thu|
January | 1| 2| 3| 4| 5| 6| 7| 8| 9| 10| 11|...................| 31|
Febrary | | | | 1| 2| 3| 4| 5| 6| 7|...........................| 29|
...
December| 30| 31| | | | | 1| 2| 3| 4|............................
Is there a way to do this, considering that The Start day of the year must be the real day name, not a constant and this must be generated dynamically
Private Sub GenerateCalendar(ByVal year As Integer)
Dim colsCount As Integer = 3
If Bisiesto(año) Then
[code]....
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Aug 1, 2011
I'm trying to make a listview and let it show all the icon's and maps of the current folder.
here is what I got but for some reason only the icon's of application works.. he doesn't want to show the folder icons.
'lvDesktop = list view
'desktopImage = imagelist
Private Sub DesktopFileLoad()
[Code]...
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Aug 26, 2010
I run the app under current logged in user from the service.To give you background, I have a VB.NET Windows service whose sole functionality is to run a Winform App at a specified time. Apart from that it also sets a system wakeup timer so that the system can be woken up at the specified time, if it goes into standby/sleep, to run the app. This service has to cater to XP/Vista/Win7 desktops on our network. This service won't run on servers and laptops.
The Winform App shows a UI for the user to provide some inputs. If the user does not provide the input within 15 minutes, then it defaults the value and then goes into system tray icon. The user can click on the icon and change the values later (within in a specified time frame and that too only twice).
There is absolutely no interaction between the service and the winform app apart from the service starting the app. It also monitors if the app has been killed by the user/crashed. If it has been killed/crashed, then a new instance is run after 30 mins from previous run.
If there is no user logged on, then also I want the app to be run at the specified time. As I said before, the app has a default timer. So if some user has just logged off from the system, then defaults would be set by the winform app.Now coming to why I am stuck with this design - I cannot use TaskScheduler because it has been disabled on all machines and security team is not willing to change it. TaskScheduler had the option to wakeup the machine from sleep and other things. So basically I ended up creating a service which is acting like task scheduler.
Currently when I run the app.exe via process.start() within the service, its running under SYSTEM account as the service is also running under LOCAL SYSTEM. So basically I am not getting any UI. Is there anyway to run it under the current logged in user? I am not worried about multiple user login as we wont be running it on servers and switch user is not enabled on our desktops. Even if somebody has done a remote login via mstsc, then also I need the run the app and show the UI to the user.
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Jul 4, 2011
I've added a windows media player component to a windows form. Each time a richtextbox updates, I have the component play a sound using the code:
wmp.URL = "C:UsersJesseDesktopelectronicblip06.wav"
This works because autostart is enabled. My question is, how do I use the "correct" code to just play the wav file instead of loading it each time in order to increase performance. i.e., what is the play command.
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Feb 19, 2010
I'm having problems with adding columns to listview. [code]....
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Jul 8, 2011
how to add information in to a listview with information from a dss. So far i have managed to get all the information from SQL and now im just in the process of populating the listview.
Im aware i could use a datasouce for this but i want to learn it this way
So heres my code
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim retrieve As New GlobalFunctions
[Code]...
It doesnt throw an error it finishes loading and then presents with me a listview with a vertical scroll bar but with an empty screen....i think i may have got things a bit muddled up
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Apr 12, 2009
I am having trouble adding items to individual columns. When I do the following[code]....
Everything gets added to the first column instead of the assigned column.
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Jul 17, 2009
I have seven columns in a table Customer (custId, Date, AccountCode, Description, Quantity, Price, Amount)Also i have seven textboxes on the form from where data is transferred to the Listview. Listview has all seven columns from where data is to be transferred to the seven columns of Table Customer.I want that data should be transferred to all the seven columns of LIstview but Listview should display only last four columns and hide first three columns to display. In otherwords user may be able to see only the last four columns in Listview.
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Oct 7, 2009
I have a listview that I populate with data from a recordset during runtime. After the code has executed and I view the listbox, my columns are missing. I am 100% shure the listview is populated with data. The listview view property is curremtly set on Details. If I however switch the view to anything else eg. view=list, I see the listview items in the listbox. I need to show the user all the columns.
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Mar 20, 2012
i've 3 listboxes...
- listbox1 (A, B, C)
- listbox2 (1/1/2000, 1/1/2001, 1/1/2002)
- listbox3 (1,1,1)
I want to populate a listview with 3 columns.
- column1 with items of listbox1...
- column2 with items of listbox2...
- column 3 with items of listbox3...
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May 19, 2011
how to save all columns in listview my code save just first one?
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Apr 15, 2010
get 3 columns in a ListView?
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Jun 14, 2010
I've setup a listview with two columns. Both have a fixed width which totals the width of the control (to fill the control fully and not display a horizontal bar)This works fine as long as the form does not change, anything such as a font change on the system will cause the list view to look off alignment.LV2.jpg shows it in the designer, LV.jpg shows the same listview with a different font.Is there an easy method to fix the position or auto size the last column to the edge of the control?
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Oct 11, 2010
On Windows Phone 7 to get the current control one would use
FocusManager.GetFocusedElement()
Wherea on Winform it is just ActiveControl.Why use 2 semantics which is a nuisance for portability ? Is there any difference of behavior you can see between the two ? If yes that makes sense, otherwise that doesn't.
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Oct 10, 2009
I have created a project that uses a listview associated to an imagelist (LargeImagelist, I have set the size as 100 x 75 and 32 bit depth), that displays information from a database along with an image from the image list. My listview is set to tilemode so that I can control the size of the tiles to get two columns of six. The image list is populated when the form is loaded from all the images in a specific folder, this part is working appropriately as I can get a picturebox working consistently that references an image from the imagelist.
[Code]...
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May 26, 2009
Im trying to fill a listview(tiles) with posters and titles of a DVD collection but only the titles become vissible.
this is my code:
Private Sub fillListView(ByVal listView As System.Windows.Forms.ListView, ByVal col As Collection)
listView.Items.Clear()
myImageList = New ImageList()
For Each item As bsDVD In col
[code]....
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Jul 10, 2010
Im trying to fill a listview(tiles) with posters and titles of a DVD collection but only the titles become vissible. this is my code:
[Code]...
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Jul 28, 2011
I have a ListView called lv with three columns. What's the quickest and easiest way to add items in it during runtime? I am using WPF.
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Feb 22, 2012
sSql = "SELECT ProductName, Quantity, UnitPrice, Total FROM Stock ORDER BY ProductName;" [code]...
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Mar 22, 2009
I have a three column ListView.The first column has all the items in it, but if I save it to return later to put data in the other two columns it won't save the blank columns.The only way I can do it is to put a space or a character in those columns.[code]
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May 1, 2011
I want to create a listview with 2 columns, on the first column, a series of names
and on the second a series of filepaths. I want each name to be linked to a filepath and then when the user clicks on the name in the first column, the filepath can be used in another bit of code. How would I do this, never used listviews before.
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Feb 20, 2009
I am currently using the following code to store all of the items from a listbox control in an array, and then build a string based on the array items, trimming the last two character of the string to remove the ", ". I am looking to do something similiar for my multicolumn listview control but am concerned about how to store the multiple subitems for each item in the array.
Dim myStr (listbox1.items.count) as String
'store all active medications information in an array & build a string
For i As Integer = 0 To listbox1.Items.Count - 1
[code].....
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Jul 13, 2011
I seem to be having trouble finding out how to right align the text in listview columns. We have common listview control at my shop and I need to align it at run time. Currently dollar values are left aligned. Alignment. doesn't have right as an option.
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Apr 15, 2012
I want to separate each text into their own Column in VB.net. How do I achieve this?
Screenshot:
Each entry is separated with "|" .
My Code:
Private Sub MenuItem3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuItem3.Click
Dim folder As String = Environment.GetFolderPath(Environment.SpecialFolder.Personal)
Using sw As StreamWriter = File.AppendText("My Expenses.txt")
sw.WriteLine(DateTimePicker.Text + Space(1) & "|" & Subject.Text + Space(4) & "|" & Category.Text + Space(5) & "|" & Amount.Text + Space(4) & "|" & Peyment.Text)
sw.Close()
End Using
End Sub
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Sep 3, 2011
I set the width for my ListView columns in the designer, in run time they always shrink back. I have no idea why, could anyone shed some light on this for me - possibly a solution to keeping them exactly the way I set them in designer ?
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