I've made an extended listview for my application but do get some strange behaviour when i scroll down and select an item.
This is the
Imports System.Windows.Forms
Public Class iListView
Inherits System.Windows.Forms.ListView
[CODE]...
The strange thing is that after scrolling up and down some items get visible again.
I have a ListView which might contains a lot of items, so it is virtualized and recycling items. It does not use sort. I need to refresh some value display, but when there are too many items, it is too slow to update everything, so I would like to refresh only the visible items.How could I get a list of all currently displayed items ? I tried to look into the ListView or in the ScrollViewer, but I still have no idea... the solution must NOT go throught all items to test if they can be seen, because this would be too slow.I'm not sure code or xaml would be usefull, it is just a Virtualized/Recycling ListView with its ItemSource bound to an Array.
View 2 RepliesWith the Listview in Details view:When showing a long (scrolling) list:Is there an (easy) way to return the index's of which range of items are currently visible in the control?
View 2 RepliesHow can I check if a ListView has items that are not in its visible area?
View 5 Repliesi'm working on an extended combobox control that adds it's items in sub new.
it works but for some reason the form's designer.vb file has an addrange line for the combobox, that results in the items being added twice.
does anyone know how to fix this?
my homework question is to display the selected items from a listbox (multi-extended) in a label. I need to display all the selected names in a label. the simplest most uncluttered way of doing this. This is what I've got but it doesn't work.
[Code]...
How to do app active on screen all time?
View 2 RepliesI have wrote a code that should write some text in a xml file and add a item for every file in the fileadddialog to the listview. But i can't make it to work, the writing works, both with multi-select and single files. But it only add the Movie to the listview if the file don't exists (read the code to understand).
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
fileaddDialog.ShowDialog()
If DialogResult.OK Then
[code]....
The only way I know how to put an item in a list view is to make a new item, which is the first column, then add a sub item for the columns after that and the item is placed in the row.For this Project I am wondering if there is a way to easily add items to individual cells, based on the column and group, not add items in a row at a time.
Something like the following image is what I need to do with code. To get this I manually added the items in the designer. But the logic bases where to put the class on the other classes in that time block (Mon at 8-1030am is one block). However if we have to add them a row at a time it throws off our logic and thought process.
How can I get items in listview? I know how to get the current item if selected but Im trying to put it in a loop where i need to get my three row items there.
I have 3 columns and I want to get there items and insert it in entry string.
This code is wrong
Dim a As Integer = 0
For a = 0 To ListView1.Items.Count
columname.Text = ListView1.FocusedItem.Text(a)
[Code].....
I've used the same method to add items to a listview before but for some reason they're not showing, I even just tried a test:
Dim row As New ListViewItem
row.Text = "test"
row.SubItems.Add("test")
lstvwHistory.Items.Add(row)
in the load and that doesn't show up.Here is what I am trying:
gameDate = HistoryDS.Tables(0).Rows(0).Item("gameDate")
frmGameHistory.NewGroup(gameDate.ToShortDateString)
For Each row As DataRow In HistoryDS.Tables(0).Rows
[code]....
I walked through the code having a message box pop up every time an item was added with the count and it goes up as it should, nothing throws an error, and the item has all the correct parameters. I commented out the making a new group and just plain add the items and it still didn't show. I tried the lstView in all the kinds of views (detail, small icon, etc.)
I have a listview in details mode with multiple columns. I want to be able to temporarily hide entries. I know the old Listview.Items(x).hide = true doesn't exist (from research).I'm wondering if there's a way to create a temporary list of every item NOT to display, remove them from the listview, then when I want them back, just re add them from the list
View 5 RepliesI am making an application that loads lots of data into a listview. It takes a while to add the data (over 2000 items).Is there a more efficient way of loading these items rather than the standard way? Maybe a quicker control or something.
View 6 RepliesI'm gonna add x number of items to a listbox in form #2 form form #1. When I click the button it opens Form #2 and then I tried this code (which makes the form freeze):
Dim qwe As Integer = 1
Do Until qwe = regKey.GetValue("Count") + 1
PrMaker.ListView1.Items.Add(regKey.GetValue(qwe))
qwe = qwe + 1
Loop
The regKey.GetValue("Count") is a registry key which contains a integer (unknown). What is wrong, or is there another, better way, of doing this?
I have 5 columns and the rows are not dependent on each other. I just want to add items to each column. How can I do this? For example, I want to do:
listview1.column(0).add("add something to column 1")
listview1.column(1).add("add something to column 2")
etc
But it's not letting me do this?
I am using the following code to try to grad whats in the listview on another window:
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr
[Code].....
I have 2 listview with the same number of lines, what I want to do is when a user scroll the fist listview I want to second one to scroll too.
View 3 RepliesI'm making a program that updates a ListView filled with processes every second. After updating, it scrolls back up to the top. How do I stop it from doing that?
View 5 RepliesHow can i get the first visible item in a wpf listview (listview view is gridview).
View 5 RepliesIs there anyway to tell if a scroll bar is visible in a listview?
When I'M drawing the listviewitem, I need to know if the vertical scrollbar is visible so I can make sure to make my item's width smaller than it normally should be.
I use a listview control which is created at runtime because I don't need it visible to the user. I basically use it to store some information about paths, sort it and then pick out the data I need. It works very well apart from it doesn't seem to sort. For efficiency, I turn off sorting on the listview while the data is being added then enable sorting on the listview at the end. However, the sorting doesn't work. Is this because the listview isn't visible or am I just being daft?
View 18 Repliesi have a listview box full of items, image below:
when i click a button i would like a msgbox to pop up displaying how many are alive.
How would i do this ?
Also how would i remove all items that status is "Dead"
i made a media player program and i am having many problems! the main issue is that i have a listview that displays music playlist, how can i get it to navigate to the next item after the clicked one is over that way users don't have to click on the next one to continue their playlist?
View 14 RepliesHow can I save ALL of the items in a listview, items that were added by the user? I tried application Settings and tried creating a settings file but there is not a settings option for listview items.
View 8 RepliesI have a number of textboxes and labels in a panel which has to scroll in order to view them all. The user is then able to scroll down and click on one of the labels which has a textbox that appears so the user can change the corresponding value in the label. For some reason, if the user has to scroll down at all to any of the labels that are initially out of view, when they click on the label the textbox appears far below as if it was at its initial position and not directly where the label currently is.
View 11 Repliesim trying to make the listview sort the listview items by column (whichever column was clicked, sort the list based on that column)
in vb6 it was done by:
Private Sub ListView1_ColumnClick(ByVal ColumnHeader As MSComctlLib.ColumnHeader)
Static olditem&
With ListView1
[Code].....
I am having some trouble getting my menu bar to not scroll down my application when I scroll down. Is there a way I can I guess dock it to the top where the close button and the maximize/minimize button is so that when I scroll down you can still see and get to it instead of having to scroll back tot he top of the application?
View 2 RepliesSince I am making a program with quite a few users with different access levels, I usually turn all the toolstripmenuitems to visible false first, before turning some of them to visible true again as specific to the users.[code]...
View 3 RepliesI am making a video game in visual studio 2010 and want to know how to make side-scrolling. I have my background image on the form and since you can't see through a picture box, I can't do it that way. Is there a detailed way to doing this?
View 13 RepliesIm trying to print out all the items/sub items of a listview into one string.
here is the code i have:
For Each lvwItem In ListView1.Items
' Print the subitems of this particular ListViewItem
For Each lvwSubItem In lvwItem.SubItems
[Code]....
How do i just print out the value (MyItem1) without the "ListViewSubItem: {}" part? I know i can use a string function to remove this, but id rather not