Pulling Item Stored In Array Out Of ListView For Modification
Jun 8, 2010
I have a data entry form, a listview form and a couple of classes. Data is entered in the form, and it is stored in an array. This is then displayed in a listview. I can insert and delete just fine, but I cannot figure out how to modify. This is what needs to happen: With a row selected in the listview, modify is clicked in the menu strip.
Whatever information is in the selected row, it needs to be transferred to the data entry form where changes to it may be made. I have attached what I have so far, and a sample data file is provided in the root directory. I think I need to temporarily store the selected item, put it into the data entry form, delete it, and when submit is clicked have it re-inserted.
Attached File(s)
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Jan 7, 2011
Basically, the user can type in a name and a job description into two different txt boxes and then click add. It then adds the name to the listbox and stores it in a string list (Public strList As New List(Of String)) it also stores the job description in a string list as well (Public strListDescription As New List(Of String))Then when you select an item in the list box it knows what data to bring up in the txt boxes using an array with these lists:
Code:
Private Sub lstMyCourt_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstMyCourt.SelectedIndexChanged
Dim i As Integer
[code].....
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Nov 12, 2011
i have a list of byte array,s what i want to do is search for a element, replace that element ,add one more element after first element.
ex for element 7D i want to add 5d after . and for element 7E i want it to replaced it by 7D and need 5E after.
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Jun 10, 2011
The code for this is:
'IMAGE HANDLING
Dim bytes() As Byte = DS.Tables("Location").Rows(0).Item(4)
Dim ProductImage As Image = Image.FromStream(New System.IO.MemoryStream(bytes))
pic_ProductImageDisplay.Image = ProductImage
pic_ProductImageDisplay.Load()
The error occurs line 3 stating "ArgumentException was unhandled: Parameter is not valid."
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Jun 8, 2009
I am coding for a WPF application that has a ListView. I want to add values of one column of selected items in the listview to a string array.
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May 19, 2009
Ok, so I have a listview on one form, and when a button is pressed it opens up a new form with the contents of the selected listview item and it's subitems in a series of textboxes. The user can then change the data in the textboxes and either press save to make the changes or cancel to close the window. What command would I use to change the selected listview item and subitems to whatever is in the boxes?
this is the code that populates the boxes:
Private Sub Form_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim appeditcontents As String = main.passlist.SelectedItems(0).ToString
[Code]....
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Jan 12, 2012
removing Listbox item from checked Listview item.The code I tried just errors out.
Private Sub ListView1_ItemCheck(sender As Object, e As System.Windows.Forms.ItemCheckEventArgs) Handles ListView1.ItemCheck
If (e.CurrentValue = CheckState.Unchecked) Then
ListBox1.Items.Add(Me.ListView1.Items(e.Index).Text)
ElseIf (e.CurrentValue = CheckState.Checked) Then
[Code]...
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Jun 1, 2009
I've come up with the following and it's partly working.
Public serial1, serial2, serial3, serial4, serial5 As SerialPort
Public serialports() As Object = New Object() {serial1, serial2, serial3, serial4, serial5}
dComPort = "COM4"[code]....
The above code works fine! But im having trouble trying to now retreive whats stored in the array.In the above example, an entry will be stored in serialports(4), all other array elements will be blank.If I do this it works.
MsgBox(serialports(4).PortName) ' this retuns the value COM4
But I'd like to loop though all array elements and print out ALL the PortNames, The below code doesnt work, I get an error Object variable or With block variable not set.
For i = 0 To serialports.Length - 1
MsgBox(serialports(i).portname)
Next
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Feb 12, 2010
I have a media browser program I am building. I am trying to use drag/drop so a user can drag media tracks from one listview to another listview and then use the second list view as a playlist in windows media player com object. Reading at MSDN I have found out that there is no built in support for item re-ordering with the listview control. I have listview1 working correctly but when I try to reorder items in listview2, the dragged item ends up at the end of the list. So basically I need to get the item insertion index corrected. I have tried more than 10 times to get this code right.
Here is my code which includes a form with two listview's.
Public Class Form1
Private Sub ListView_ItemDrag(ByVal sender As Object, ByVal e As _
System.Windows.Forms.ItemDragEventArgs) Handles ListView1.ItemDrag, _
ListView2.ItemDrag
[CODE]...
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Mar 21, 2010
Do I really have to go through all this just to find out what item has been selected in a ListView?
[Code]...
Isn't there something fundamental like this? Is absolutely everything in VB.NET buried beneath a colossal heap of bureaucracy?
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Mar 12, 2009
i want to format listview head of listview textalign = center and item of listview textalign = right
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Jul 25, 2010
I've been trying to feed a multi line textbox into a string array then check item by item if a string contains part of it.
[Code]...
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Dec 16, 2009
I have a listview with 4 colunms
Private Sub process()
Dim datenow As String = ITEM HERE
Dim name As String = subitem1 here
[code]....
I dont know how to get each (row) id call it even though its a colunm and add the item and its 3 sub items to my variables.
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May 30, 2010
Im desperately trying to populate my Listview called "Listview1" with my stored procedure that I have create on my SQL Server 2005. Ive got quite far as seen below but I still dont know to to effectively populate the Listview1 with the data retrieved from my Stored Procedure. The below connection does work but I dont know how to use it now with my Listview.
Imports System.Data.SqlClient
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
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Feb 15, 2010
I want to create a very simple database. form1 - ListBox1, textBox1, buttonadd, buttonremove. The item collection of the ListBox1 is stored in a txt file along with a string that will be displayed in the textbox1. the file will look like this ( like a .ini file):
[Code]...
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Jul 10, 2009
Whenever I want to modify a winform from another thread, I need to use ->Invoke(delegate, params)so that the modification occurs in the winform's own thread.
For every function that needs to modify the gui, I need another delegate function.Is there some scheme which allows me to limit the number of delegate functions needed? I have a controller class which handles the whole gui in one spot, I've thought about reusing delegates but that smells badly.I think that my question can apply to all languages where winform can run
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May 27, 2010
I have established how to use the click once system to include multiple project's exe's in a SINGLE click once deployment.
Now, with that said, it just adds the secondary project's exe(and its required files) to the install directory. Cool.
BUT, to avoid making a button that says 'Run Program 2' in Program 1's screen, does anyone know of a hack/mod to add another link to the start menu's folder?
So it'll show, Support for 'Project 1', Project 1, then add the link for Project 2?
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Jul 21, 2009
Is there a set of functions or classes to edit/read the registry via VB2005?
I need a function like
RegWriteString( "HKLM", "SystemExplorerShell Folders", "My Documents", "My Documents" )
and
value = RegReadString( "HKLM", "SystemExplorerShell Folders", "My Documents" )
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Jul 18, 2012
How can i remove an array item by selecting an item from listobx and press remove/delete button?for an example, if i want remove index 2 from listbox, so the array should remove index 2 item and move the item of index 3 to index 2 and so on.
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May 3, 2010
How to modify a line in an existing text file in VB. This is the code I was told to use:
do while (sr.peek() <> -1)
line = sr.readLine()
if line(0) = stockName then
' update the line
updatedLine = line(0) & "," & line(1) & "," & line(2) &
else
' don't do anything
loop
The problem is that when I use that I get the error message that says:
Error1'Line' statements are no longer supported. File I/O functionality is available as 'Microsoft.VisualBasic.FileSystem.LineInput' and the graphics functionality is available as 'System.Drawing.Graphics.DrawLine'.
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Dec 27, 2010
I have a notify icon and I use the 'Text' property instead of 'BallonTipText' because I just like it better and it fits well with my application. The only thing wrong with that is the 64 character limit. How can I determine the length of a string, remove all characters after the 61st character, then add three periods at the end of the new string? I've looked around and can't find any solution to removing all characters after the first X characters.
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Jan 23, 2011
I have written a C++ code to modify a string, the code is:
int Len = (nString.length());
char *szString = (char*)(nString.c_str()); // Convert to C string
for (int i = 0; i < Len; i++)
[code].....
I have this so far, but it is not working:
Dim i As Integer
Dim chrArray() As Char
chrArray = EncryptIn.ToCharArray
[code]....
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May 31, 2012
I've been using the following sub in my control that I'm creating to let me modify the pixels in a bitmap faster:
Protected Sub LockForMemory()
idata = ime.LockBits(New Rectangle(0, 0, ime.Width, ime.Height), ImageLockMode.WriteOnly, ime.PixelFormat)
ipoint = idata.Scan0[code]....
This doesn't seem to work right, however.
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Apr 5, 2009
This application should ask the user for a percentage amount by which each price should be increased then increase each price by that amount and then display the increased amounts. I can't seem to get it to calculate the amounts. Everything else seems fine. Any suggestions, ideas or recommendations? [Code]
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Nov 10, 2009
I got a value which is store in the array and i need to compare it. Which
if my user = 1,2,3,4,5,6 then ignore
if my user = 2,3,4,5,6 then i need to add in a ,1 which become 2,3,4,5,6,1
Here is my coding
user = dr("user_access")
dr.Close()
Dim splitX As String() = user.Split(","c)
For Each item As String In splitX
[Code] .....
Is there other way to compare the array or there is another better way to check?
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May 3, 2011
In my website I have a textbox that allow user to enter a group of numbers like this:
(118,38,137,15,156,14,157,36,152,49,142,57)
Now i want your help to show me the way to store these numbers in array to be like this:
[118 38 137 15 156 14 157 36 152 49 142 57]
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Jun 3, 2009
Im new to database programming and was wondering if you can save a select statement to an array:I tried this but obviously wont work, does anyone have any ideas?
Code:
Public Sub store_select_star_to_array()
Dim myCommand
[code]......
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Jul 23, 2010
My VB.NET code is supposed to execute third party Javascript code in an attempt to fill in and submit a form. This process consists of five steps, and I have been able to submit the form when all the steps are kept separate (i.e. behind 5 separate consecutive button clicks). Now, what I'd like to have is one button to handle all the five steps.
The problem is that the form originally only appears after calling "webbrowser.Navigate" command, which apparently modifies the page's HTML code. I seem to be unable to detect when Javascript has finished loading the new HTML in order to fill and submit the form. I have tried a timer control to wait for a certain HTML element ID to appear, but in vain. [URL]
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Jan 6, 2010
I have put together an array for data from two text boxes to be stored in. This works fine at the moment. I am now looking to build some form of array that will have some stored data in it already, so that someone can select the information they require from a listbox.
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Jul 30, 2009
I've currently picked up a small project and they one who assigned me to it wants me to upgrade the app using .NET.Is there any way I could add an item to a listview when I'm not on the form containing it? In VB6, something like this would work.
'Code on Form2
Form1.ListView.ListItems.Add "Item Name"
but in VB .NET, the code below doesn't add anything to the listview. It doesn't return any errors too.
Form1.ListView.Items.Add "Item Name"
And another thing, why is it that when I close the Login form to launch the Main form, the Main form closes automatically? The code in sub main is
' shared sub main
Application.Run(New frmLogin())
Then when correct credentials are given to the form, I'll do this.
'login form
Dim frmMain as frmMain = new frmMain
frmMain.Show()
Me.Close()
I assume things are done a lot differently than VB6.
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