on cloning a selected listviewitem from listview1 when a button is clicked to listview2. How do I achieve this? Here is the code I have but does not work exactly how I want it, it just makes a clone of all the listviewitems in listview1.
foreach (ListViewItem item in this.listView1.Items)
this.listView2.Items.Add((ListViewItem)item.Clone());
There is something that I do not understand the point of, and it has to do with ICloneable.
Take the simple example below:
Public Class MyClass2
Implements ICloneable
Private p_List As New List(Of String)
Private p_Number As Double
[CODE]...
No... For the life of me I cannot understand why anyone would want a Shallow copy of anything.... And... I do not understand why the Me.MemberwiseClone would not work with list and arrays....
I would like to know how i can clone an image of a picturebox.I have the picturebox not visible on my screen and want to recreate the image on a certain location.what is the easiest way to do this?
View 2 RepliesI have a panel that is "drawn" on by passing: panel.CreateGraphics.GetHdc() into an api call
I was wondering how i can then clone what is now on that panel to another - i have tried: panel.DrawToBitmap and then painting the resulting image on the other panel - but this doesn't work
oh and also the panels may not be the same size ... so in this case the result would need to be "stretched" or "shrunk"
I ve google addrange method and came to msdn but there they showed this:
Private
Sub
CreateMyListView()
[code]....
I have a object collection type of BindingList(of T), i want to take same copy of the object. but the problem is when ever i made the changes in the copy then the original object also reflect that change, how can i avoid it .
View 1 RepliesDim img As D.Image = CType(Resources.EtcImage("Title"), Bitmap).Clone(D.Imaging.PixelFormat.Format24bppRgb)
MsgBox(img.PixelFormat.ToString)
[code].....
The following code loads a large 1 bit depth bitmap (10800x7226) on a PictureBox docked and with auto scroll bars.
After loading the bitmap I can drag the scrollbars, and it's very responsive.
After clicking the PictureBox and executing the Bitmap.Clone, dragging the scrollbars becomes very sluggish.[code]...
I am trying to clone some of my Controls, with their EventHandlers. I have a function to retrieve the Delegate of a specific EventHandler.The hard part is to find the correct naming to use.
This is the function I'm using
Private Function GetEventDelegate(ByVal ctrl As Control, ByVal eventname As String) As [Delegate]
[Code]......
I am trying to clone some of my Controls, with their EventHandlers. I have a function to retrieve the Delegate of a specific EventHandler.The hard part is to find the correct naming to use.
This is the function I'm using
Private Function GetEventDelegate(ByVal ctrl As Control, ByVal eventname As String) As [Delegate]
[code]......
I want to make a clone of a selected row in a DataGridView, while searching I saw that a 'Clone' method exists but I can't use it too well I don't know if it is due to have a Binding Source to it. Are someone familiarized with this method ?
View 2 RepliesAre there other conditions that can cause this exception to be raised? I am attempting to use the method to take a section of the source bitmap in question (possibly equal to the entire source bitmap). I have checked my code extensively, including verifying the parameters of the Rectangle at runtime, and even tried hard-coding a Rectangle with parameters that I knew were within the bounds of the source bitmap, but have still received the error. I tried several choices for the PixelFormat as well.
View 6 RepliesIs there a simple way to differentiate single display vs. dual display clone? I am asking about dual clone, not extended desktop. .Net Screen class treats dual clone as single display. I could not find useful WMI method also.
View 6 RepliesI need to copy a database programatically in VB code. To clarify: I want to create CUSTOMER1 database as a copy of MYMODEL database, without the DBA having to manually run scripts . I want to copy schema, indexes, data, primary keys, stored procedures,
View 5 RepliesI am trying to create a clone function to create a deep copy of an object. I have a very simple class with one property, a List of another custom class. Everything I try keeps ending up with the cloned object being a pointer to the original. I was able to do this in C#, but when I translated the code to VB2010 the copy does not work. My simple class is below.
[Code]....
I want to start a thread, which handles a class.That class should add a listviewitem into a listview on the main form.[code]No idea why that doesn't work.I really need threading, cause it would block the program.These codes are examples, the real one is with loops & stuff, so that blocks the program.
View 1 RepliesTrying to figure out how to take a selected listviewitem and when a button is clicked add it to another listview.
View 10 RepliesI am trying to find a way to associate a key with an index for a Listviewitem in VB.Net. I'm not even sure if it can be done with .Net but I know in VB6 I could do a
Listview.listitem.add "somestring", "somestring".
For the application I am using this in, I cannot have duplicate item.text so I would make the key the same as the string. this also made accessing the item easier since I didn't have to rely on index to update the subitems.
How would I go about referring to specific listview items directly.
Under certain circumstances I want to check a specific listviewitem, but i can't seem to refer to the specific item of the listview...
I have a ListView, wich its View property is set to LargeIcon and there isn't any ImageList attached to it.The thing is that ListViewItem's text overlaps next ListViewItem's text. With View set to Tile I have no problem at all, but It shows the items one below another.When I add columns header,I set their width to a large number,but it seems that ListViewItem doesn't care,I get the same mentioned effect.My question is wich property do I have to change to avoid ListViewItem's text overlapping?
View 6 RepliesHere is my problem, I have been learning about SendMessage and getting the Handles of Windows. In the following code example I show that I can get the number of Items in a ListView Control by API, but I have no idea of how to select an Item within the Control, ListView; in other words, how to select a ListViewItem:
[Code]...
I have a form that has a listview with a number of items on it. In certain circumstances, when I load the form, I want a particular item to be automatically selected. The user will select the item to be selected from another form, and I will pass this item to the form in question.
But how do I tell the listview 'hey, set this item as your selected item?" There isn't a writable 'SelectedItem' property.
I have been learning about SendMessage and getting the Handles of Windows. In the following code example I show that I can get the number of Items in a ListView Control by API, but I have no idea of how to select an Item within the Control, ListView; in other words, how to select a ListViewItem:
Public Class Form1
'Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Integer
[Code]....
I have Main and Detail forms. The Main form has ListView1. I would like to select new added ListViewItem in ListView1 when user click Save button in Detail form. I have problem only when I'm adding new item. When I modify and save existing item according item is selected after save command.
View 1 Repliesbelow is a small part of my asynchronous TCP connection code. When I connect I'm passing a ListViewItem as Object parameter. I'd like to update the ListViewItem once the connection has been established or an error occurs. ServerConnect runs on a separate thread, because it's an asynchronous connection, so I can't update the ListViewItem directly.
Does anybody know how to update the ListViewItem?
I looked at jmcilhinney's asynchronous TCP example in the Codebank forum, but it confused me. I don't know which parts I need and which parts I don't need.
::edit::
One more thing. I also need to update the ListViewItem in the Read sub, but I'm passing "buffer" as Object, so how would I update the ListViewItem there?
vb.net
Imports System.Net.Sockets
Public Class TCP
Private Socket As TcpClient
[Code].....
i have a listview in form1 and combobox in form2..i want add every first item of listview of form1 into combobox of secondform....i did this...
View 1 RepliesI have an image that I need to shrink. The original image is a grayscale PNG, which isn't a huge issues except that when I shrink it down, the thermal label printers pickup the artifacts and print them on the label. So, what I did was change the image to black & white (Format1bppIndexed) before resizing, like this:
Dim bte() As Byte = System.Convert.FromBase64String(imgStr)
Dim ms As New IO.MemoryStream(bte)
Dim bmp As New System.Drawing.Bitmap(ms)
[code]....
And then I resize it. This code works fine on my Windows 7 machine, but when I run it on the Windows 2003 Server box that it calls home, it always throws an OutOfMemoryException when it hits the bmp.Clone line.
I have a bunch of dynamically created controls by the user which I'm storing as a control collection in the session state so I can display them on every postback. Each control that the user generates is a div with other controls inside it. I have a button on each control that will allow the user to either delete the control or duplicate it.
[Code]...
Im getting a constraint error when running the following code. there are four fields set as the primary key on the table: bid number, phase number, phase version, detail number.
It errors out saying that bidno, phaseno, phaseversion are the keys and unique. it does not mention the detail number, but it will error out as soon as i run the line dtDest = dsbid.phasedetail.copy....or, if i use the clone (as in the example below), it errors as soon as i add the row.
CODE:
I have a custom datagridviewcolumn in which i've added an event.The problem is, I can't work out how to see who has subscribed to the current column object's event and add those subscriptions to the cloned column object.
I get around this problem by asking the calling program to pass the address of the handler to a delegate in the custom column, instead of adding a handler to the event.