A WindowsForms ListView control can be used in 'virtual mode'. When running in virtual mode, the ListView doesn't host any data, instead the only thing it needs to know is, how many rows/lines it has. A callback method has to be provided in order to pass over the data to display, whenever the visible lines the control is able to display at a.

The list view control is basically and advanced ListBox. This control allows you to add rows of data, but it also supports large and small icons, multiple columns, automatic label edit, column re-order, hot-tracking, the four main modes that you see in explorer:

Icon - Displays items with large icons and your main text
Small Icon - Displays items with small icons and your main text
List - Displays items with your main text
Detail - Displays items with small icons, your main text, and any other data to be displayed in columns.

and much more!

The list view control comes with all editions of Visual Basic, except the standard version.

To add a list view control to your project, goto Project Components. Now scroll down to Microsoft Common Controls and check the box next to it. Click OK. You will now see a number of new controls added to your toolbox. The ListView icon looks like this:

Edit Listview Subitem In Vb6 String Replace About List- View Controls (Windows)A list- view control is a window that displays a collection of items. List- view controls provide several ways to arrange and display items and are much more flexible than simple List Boxes. Is there a way to edit a subitem in listview? I've been searching the forums regarding this but found none. I tried using label edit but i figured that only the 1st column can be edited. It would be nice if. When I am opening the vbp project from excel vb editor, I am not able to add.frm file to that project.Please.

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. Introduction In Windows programming, ListView is a great control! Especially with the variety of views it supports. But alas, the original ListView control supplied by Visual Studio is very limited and its endless possibilities cannot be exploited without going through core level programming. Editing the text in the columns of the ListView control is one of the difficult tasks that one has to do to allow such basic facility to end-users. Background The basic need of many programmers of ListView control is to allow users to edit the content of the control during runtime by end-users. ListView however only allows the first column to be edited in the 'Detailed' view.

What about other columns? There are many off-the-shelf free controls available on the internet that allow great facilities and bend the limits of the ListView control. One noteworthy control is the. But somehow I feel why use such a difficult control, which is difficult to program as well, just to allow such a simple feature in the ListView control.

So here's a simple coding technique that allows your end-users to edit columns of the ListView control without using any third-party controls. All it does is monitor the keyboard and mouse clicks and uses a simple TextBox control to allow editing. Although my focus in this article is to enable in-line editing on the ListView control, my sample project also shows basic XML document handling procedures, like how to load, query, and save data in XML. Using the Code To begin making such an application, create a new Windows Forms Application in Visual Studio. We're going to need the original ListView control and a TextBox control. Place these two controls on your form and set the TextBox's visibility to False. In my example, I will be looking at the user's interaction with the ListView control by checking the mouse clicks and keyboard keys.

A user can double-click on a SubItem to begin editing, or can also press a shortcut key like F2 on keyboard to begin editing. Private Sub ListView1MouseDoubleClick(sender As Objecte As System.Windows.Forms.MouseEventArgs) Handles ListView1.MouseDoubleClick ' This subroutine checks where the double-clicking was performed and ' initiates in-line editing if user double-clicked on the right subitem ' check where clicked CurrentItem = ListView1.GetItemAt(e.X, e.Y) ' which listviewitem was clicked If CurrentItem Is Nothing Then Exit Sub CurrentSB = CurrentItem.GetSubItemAt(e.X, e.Y) ' which subitem was clicked ' See which column has been clicked ' NOTE: This portion is important. Here you can define your own ' rules as to which column can be edited and which cannot. Dim iSubIndex As Integer = CurrentItem.SubItems.IndexOf(CurrentSB) Select Case iSubIndex Case 2, 3 ' These two columns are allowed to be edited. So continue the code Case Else ' In my example I have defined that only 'Runs' ' and 'Wickets' columns can be edited by user Exit Sub End Select Dim lLeft = CurrentSB.Bounds.Left + 2 Dim lWidth As Integer = CurrentSB.Bounds.Width With TextBox1.SetBounds(lLeft + ListView1.Left, CurrentSB.Bounds.Top + ListView1.Top, lWidth, CurrentSB.Bounds.Height).Text = CurrentSB.Text.Show.Focus End With End Sub By using ListView's MouseDoubleClick event, we have the flexibility to look at which ListViewItem was clicked, and from there we can detect which SubItem was clicked. Here you have the opportunity to decide which column you want to make 'read-only'.

For example, you may not want some columns to be edited by users. In my example, I've only allowed column number 2 and 3 to be edited during runtime. Rest of the columns are to be 'read-only'. (See the Select-Case coding, it determines which columns to allow editing.) Finally, we display a TextBox control (which is already present on the form, but set as invisible) on top of the SubItem which was double-clicked. We resize the TextBox to cover the entire area of that SubItem. The above code is triggered when the user double-clicks on the SubItem.

Now we also need to listen to keyboard strokes. The following code allows us to achieve this: Private Sub LVKeyDown(sender As Objecte As System.Windows.Forms.KeyEventArgs) Handles ListView1.KeyDown ' This subroutine is for starting editing when keyboard shortcut is pressed (e.g. F2 key) If ListView1.SelectedItems.Count = 0 Then Exit Sub Select Case e.KeyCode Case Keys.F2 ' F2 key is pressed. Initiate editing e.Handled = True BeginEditListItem(ListView1.SelectedItems( 0), 2) End Select End Sub As you can see in the above code, we're listening for the F2 key in ListView's KeyDown event. Once the F2 key is pressed, we have to manually initiate SubItem editing. By manually I mean performing all that code again which was performed in MouseDoubleClick.

Since it's not my programming style not to repeat the same piece of code over and over again, I am going to fake a mouse double-click through the KeyDown event. You don't need to do this really. You could come up with a better and more efficient piece of coding. A good programmer always minimizes his code by making it reusable as much as possible, and not write the same code over and over again. Anyway, back to the topic. BeginEditListItem is a subroutine that fakes a mouse double-click in order to trigger the ListView's MouseDoubleClick event and commence editing a SubItem.

Private Sub BeginEditListItem(iTm As ListViewItem, SubItemIndex As Integer) ' This subroutine is for manually initiating editing instead of mouse double-clicks Dim pt As Point = iTm.SubItems(SubItemIndex).Bounds.Location Dim ee As New System.Windows.Forms.MouseEventArgs(Windows.Forms.MouseButtons.Left, 2, pt.X, pt.Y, 0) Call ListView1MouseDoubleClick(ListView1, ee) End Sub In the above code, we fake a mouse double-click to initiate editing of a SubItem. Remember this Sub is called from the KeyDown event, i.e., when F2 is pressed. At this point, we're done with coding for initiating the editing of a SubItem of a ListItem in a ListView control. We've captured the mouse-double click and the keyboard's F2 keystroke. Now we have to figure out when the user has finished editing the SubItem text.

To detect when the user has done editing a SubItem, the following code is used: Private Sub TextBox1KeyPress(sender As Objecte As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress ' This subroutine closes the text box Select Case e.KeyChar Case Microsoft.VisualBasic.ChrW(Keys. Return) ' Enter key is pressed bCancelEdit = False ' editing completed e.Handled = True TextBox1.Hide Case Microsoft.VisualBasic.ChrW(Keys.Escape) ' Escape key is pressed bCancelEdit = True ' editing was cancelled e.Handled = True TextBox1.Hide End Select End Sub The above code monitors two types of keystrokes in the TextBox, the Enter key and the Escape key. The Enter key means the editing is finished, and the Escape key of course means cancel the editing. Whether to save the changes or not, it is saved in the bCancelEdit variable and then the TextBox is set to invisible again. By hiding the TextBox, it triggers a LostFocus event on the TextBox.

C# Listview Subitem

From there, we will capture what new text was entered by the user and whether to update the SubItem or discard the changes. Private Sub TextBox1LostFocus(sender As Object, e As System.EventArgs) Handles TextBox1.LostFocus TextBox1.Hide If bCancelEdit = False Then ' update listviewitem CurrentSB.Text = CInt(TextBox1.Text).ToString( ' #,###0') Else ' Editing was cancelled by user bCancelEdit = False End If ListView1.Focus End Sub Here you can also set up validations on the text entered. For example, you might want only numeric values to be entered in that column, so you can check the Text property of the TextBox and show appropriate messages to the user before accepting the newly entered text. That's just about it. That's all we need to do to enable editing on SubItems. However, there's a slight obstacle that we have to overcome.

Obstacle The ListView by default allows editing of the first column only. We did all the above code to make it work on its SubItems as well. At the moment, in the MouseDoubleClick event, we've only coded for detecting mouse double-clicks on SubItems. What if the user had clicked on the first column? It is really no issue except that you cannot get the Bounds of the first column like you can get for SubItems. If you try to check the Bounds property of the first column, it will return you the size of the entire row of the ListItem and not just the first column. Whereas if you check the Bounds property of any SubItem other than the first column, it'll tell you only the size of that particular column.

So if we show our TextBox on the first column and resize it using the first column's Bounds property, it ends up spreading all over the entire row and covers up all the SubItems. So how do we overcome this obstacle? We use the ListView's originally supported label editing. All we have to do is to check if the user double-clicked on the first column, and if that's the case, we abort all our tricky coding and initiate the ListView's own label editing by calling the BeginEdit method. For this, we have to add another piece of code to the ListView's MouseDoubleClick event: ' Check if the first subitem is being edited If iSubIndex = 0 Then ' There's a slight coding difficulty here. If the first item is to be edited ' then when you get the Bounds of the first subitem, it returns the Bounds of ' the entire ListViewItem. Hence the Textbox looks very wierd.

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In order to allow ' editing on the first column, we use the built-in editing method. CurrentItem.BeginEdit ' make sure the LabelEdit is set to True Exit Sub End If This code is inserted right before we resize our TextBox control. As you can see, we check whether the index of the SubItem clicked was zero, i.e., the first column. If so, we abort the code and call BeginEdit on the selected ListItem. Of course, this requires that ListView's LabelEdit property is set to True prior to running into this code.

Preferably at design-time. Sample Project Download and see the sample project. Please note, this project has been made with.NET Framework 2.0 using Visual Studio 10. You can switch to another framework in case this framework is not installed on your system.

Edit Listview Subitem In Vb6 Tutorial Software

(Open project properties, go to Compile tab on the left, click Advanced Compile Options, and select your target framework.) Hope it helps improve your interface designing skills:-). IrishEddy 28-Jul-16 2:36 28-Jul-16 2:36 The author's implementation is great, but as you can see from the comments, there are problems with this approach (the text box editor should be scrolled together with the ListView, we need to provide a keyboard interface to access any subitem to edit and the like). You may need this editing functionality in several ListView's in your app, so you will either copy this editing framework code for every ListView or write a custom control that wraps the ListView editing functionality. Add to this that ListView has its own set of problems like flickering, no color formatting, no built-in sorting, etc. In many cases, it's much simpler to use a professional and cheap 3rd-party replacement for ListView like iGrid.

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See this article for more info: Ultimately, you can even earn more if you use such a control as you will avoid many hours of manual coding. I would say its better to let the textbox lose focus. Because even if this subitem editing was a built-in feature, you have to think that this listview control also comprises of further child controls.

Edit Listview Subitem In Vb6 Tutorial Free

The grid is a different control, column headers are different controls, and hence scrollbars are also different controls. So if you shift focus to one control (in this case the scrollbar), it is by nature that the other control should lose focus (in this case the textbox). It would be quite difficult to program the textbox in such a way that it moves along with the scrollbar. Although you can give it a try.

There are ways to capture scrollbar movements from a listview control. So you can move the position of the textbox along with the movement of scrollbar. The difficult part would be to show the textbox in half if the scrollbar is in such a position that half subitem is visible. Also there would be a flickering overload to the sytem. Hope it helps.