Saving CheckedListBox's Items, Retaining Checked State?
Jun 11, 2011
I'm trying to program a personal project, but I've hit a bit of a bump in the road.I've got a Button, a Textbox, and a CheckedListBox; when the button is pressed, whatever is in the TextBox is added to the CheckedListBox. However, when the form is closed and reopened, all of the CheckedListBox's items are no longer present. My CheckedListBox's name in the code is ZapList.
Can someone assist me in, not only saving all of the CheckedListBox's items, but retaining whether or not they were checked as well as the order they were in? I've run out of hair to pull (figuratively) and I really don't want to quit this project, too much effort has gone into it and I'd hate to see it go unfinished like my numerous other projects. :icon_cry:
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Feb 23, 2009
This loads the list of items from the text file
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim StreamReader1 As New IO.StreamReader("L:\Glossary\Glossary.txt")
[code]......
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Apr 12, 2010
I have CheckedListBox and four item in it!Now I want to count number of checked item. For this I use:
countnumber=CheckedListBox1.CheckedItems.Count
But countnumber is always 0 even if I checked CheckedListBox items or not!
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Jul 3, 2009
I'm trying to remove all the checked items in my CheckedListBox. I started by doing
CheckedListBox1.Items.Remove(CheckedListbox1.CheckedItems)
That seemed like it would work, but it didn't. I soon discovered that CheckedListBox1.Items.Remove only works on the the strings of the individual items.
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Feb 27, 2012
How do I get the set of checked items in a checkedlistbox when an item is checked or unchecked, given that ItemCheck event occurs before the check state is actually updated? (The SelectedIndexChanged event won't work in my case.)
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Mar 25, 2010
I am trying to get the number of items that are checked in my CheckedListbox. The Items.Count seens to only reference the entire collection so I am not sure how to narrow the count down to only the ones with checked boxes.
VB
'
Dim i As Integer
[Code]....
Basicaly I have the option for the user to print a series of reports directly to a printer that is not located in the same area as the application user. I want to show the user a progress bar how far into the process they are but I can't do it without getting the Maximum value of the Progress Bar (number of reports checked for printing).
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Mar 1, 2012
I'm trying to update a label to indicate how many items in a CheckedListBox are checked. Here is the code I'm using:
Private Sub CheckedListBox1_ItemCheck(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs) Handles CheckedListBox1.ItemCheck
Me.Label1.Text = "(" & Me.CheckedListBox1.CheckedItems.Count.ToString & ") of (" & Me.CheckedListBox1.Items.Count.ToString & ") Items Checked"
End Sub
It should say "(x) of (y) Items Checked" each time an item is checked or unchecked, but it's not updating the label properly, the count is always off by 1.
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Mar 15, 2012
[URL]
how to make a filter that only show the items that checked and unchecked don't show in checklistbox
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May 14, 2010
I am trying to look through a database and checked items in a checkedlistbox based on a Contact ID number. The error I'm receiving is this : Public member 'item' on type 'String' not found.
The error is on this line of
"If lstDebtState.Items.Item(x).item(0) = dt2.Rows(j).Item(0) Then"
<b>
Here is my
</b>
Try
con.Open()
[code]....
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Apr 30, 2009
I have managed to get it to write a string to a textfile if the listviews checkbox is checked but i can not get it to write a particular string if it is unchecked.
'LOOP CHECKED ITEMS
For Each lstItem As ListViewItem In Me.ListView1.CheckedItems
Next
How do i Iterate an unchecked item as the library doesn't have .UnCheckItems?
If its checked i need to add "true" to the string and if its unchecked i need to add "false" to a string that gets written to a textfile.
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Nov 19, 2010
I want to use property bindings under application settings to store settings for my program. However I have run into a problem. For some reason the checked property is not binding to drop down menu item's checked state. The binding works for text boxes and other controls. I have tried to bind both using the checked property, and checked state property. Auto check on click for the menu items are set to true.
Anyone have any recommendations in getting the app-settings property binding to work without the need to manually set that info and manually run My.Settings.Save?
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Sep 8, 2009
There is a check box in my webform. whenever i tick it ..and click on back button it will not retain its state ..when i comeback using the next button to the same page.Note: view state is enabled in the control There is no code in the page load event
Code below:
Protected Sub chkBx_SR_wu_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles chkBx_SR_wu.SelectedIndexChanged
[code].....
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Oct 26, 2011
I gather case info from a DB table into a list(of T) list and display it in a checkedlistbox. When an item in the checkedlistbox is selected (highlighted, not checked), the selectedindexchanged event then retrieves account information from the DB for that case and loads the different accounts for that case in another checkedlistbox.
My issue is figuring out the best way to save the different items that are checked in the accounts checked list box. Since the accounts are loaded dynamically given the selected item in the cases listbox, what would be the best way to save which accounts are selected for each case?Below is my current method of loading the listboxes and selectedindexchanged procedure. I'm fairly new to programing and this is how I was taught load most controls, by list after saving to the list from the DB (which gets very complicated when you have to keep relations between items in separate lists).
Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click
Dim CasesList As New List(Of String)
CasesList = Db.GetAccounts(CDbl(txtAccountBalance.Text))
[code]....
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Feb 24, 2011
I have a project in VB.NET which is working fine which essentially has a Datagrid that has a TemplateColumn included which is a column of Checkboxes. The code to declare the datagrid is here...
<asp:datagrid id="dgDates" OnItemCommand="gridEventHandler" BorderColor="Black" BorderWidth="1px"
CellPadding="3" runat="server" AutoGenerateColumns="False" HorizontalAlign="Left" AllowSorting="True"
[Code]....
everything you see sbove is working perfectly fine...in the sense that when I click one of the checkboxes, the page_load fires, the gridItemDataBound fires on DataBind() and when all is done, the checkbox retains the value that the user clicked the checkbox.
With all this exact same code converted to C#....the events all fire in the same order, but the checkbox selected value always clears...
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Aug 21, 2009
Why is this code having the opposite effect? If It's checked in the checkedlistbox it's not check in my view, if it's not check in my checkedlistbox it is checked in the grid.
EDIT: More specifically. The CheckState.Checked is always the opposite. .Checked means it's not checked.
Private Sub CheckedListBox1_ItemCheck(ByVal sender As Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs) Handles CheckedListBox1.ItemCheck
Try
[Code]....
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Aug 25, 2011
Why does this not work?
[Code]...
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Dec 12, 2011
I need some assistance and I'm beating my head against the wall. I have an application that uses a tri-state CheckedListBox. I use the three states for specific purposes:Checked means tech performed an action Unchecked means the tech didn't perform the action Indeterminate means that the tech didn't perform the action because it was unnecessary.
I need to be able toggle, with the mouse from Checked to Unchecked to Indeterminate to Checked as necessary. If I were using a CheckBox and ThreeState were set to True, this is exactly what would happen, but it appears that the only way to set the Indeterminate state in the CheckedListBox is through code.
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May 10, 2010
Given a CheckedListBox instance, how can I accomplish that a maximum of one item can remained checked?
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Jan 7, 2010
Given a CheckedListBox instance, how can I accomplish that a maximum of one item can remained checked?
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Jan 25, 2009
I can't remember very well the instances where my selected items has disappeared as if I did a "Reset ToolBox", the last time I remember was when I installed the Service Pack early this year. But last year I think it has been reset frequently and I find it bothersome to reselect all those items again and again.Is there any configuration that I could set so that my selected items are safeguarded, that is they won't be removed no matter what?
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Mar 2, 2012
how to Checked Specific Items in CheckedListBox programmatically in visual basic 2010 CheckedListBox Items are like below
0, Apple
1, Orange
2, Banana
i want Checked Orange
Me.CheckedListBox1.SetItemChecked(1, True) it's working great
this case i know Orange's Index number 1. but if more than 2000 records how to know index number..?So i am specific "Orange" Means String Name?
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Jan 30, 2011
With my CheckedListBox, I am trying to get the text of each item that is checked and add it to a listbox, but it does not get everything currently checked. If I have 3 items checked, it only adds 2 items. If I deselect an item, it appears.
lstOpCodes.Items.Clear()
Dim OpCodeCollection As CheckedListBox.CheckedItemCollection
OpCodeCollection = chkOpCodes.CheckedItems
For Each opcode In OpCodeCollection
lstOpCodes.Items.Add(opcode)
Next opcode
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Dec 24, 2011
I want to adding checked item from checkedlistbox to my combobox, but i have a little problem here.Combobox only show 1 item last checked.This is my sample code.
If CheckedListBox1.CheckedItems.Count <> 0 Then
For i As Integer = 0 To CheckedListBox1.CheckedItems.Count - 1
cbCheckedItem.Text = CheckedListBox1.CheckedItems(i).ToString
Next i
End If
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Jun 6, 2012
I've got a checked listbox on my form which saves the checked items to a spot in my database on the .ItemCheck event.But there's a problem, when I begin checking items, I check the box and click off it, but it doesn't save. (This is if I've only chosen one item)
If I choose two or more items it will save, but unchecking them takes a lot of clicking around to figure it out.Is there a better event that I can use? I've tried the SelectedIndexChanged and that has the same result, there's a lot of clicking around in the checkboxes to end up with the desired selected items, and it does not allow a single item.
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Nov 17, 2009
1) Can I set a CheckedListBox item to be disabled programatically so that it cant be checked?
2) Why doesn't the SelectedIndexChanged event fire when I check or uncheck an item programatically? But it does if I do it manually...
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Mar 22, 2010
Let's say I have a checkbox1 control on form1. I then open form2. I want to be able to change the checked state of checkbox1 on form1 from form2.[code]...
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Mar 25, 2011
On the form that i have there is a listview with checkboxes enabled it all works fine but when i close and reopen the form all the previous checked checkboxes are uncheched . Is there a way to save the state of the checkboxes and on form load to restore them ?
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Apr 14, 2011
I have a menu bar like this.I need to use them like radio buttons. So i have come up with this. Seems a nasty hack since it loops all my menu items. And if i later add different checks it would interfear.
vb
Private Sub mnuMainMenuToolBarComposeExistingThread_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles mnuMainMenuToolBarPrivateMessage.Click,
[code].....
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Mar 14, 2009
In Vb.net 2005 how can i trap the checked/unchecked state of a datetimepicker through an event. I'm trying to execute two different methods based on the checked/unchecked state of a datetimepicker when the user clicks the datetimepicker. When the user checks the dtPicker Method A is executed, when the user unchecks it Method B is executed. How can i trap it.
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Sep 16, 2009
I am trying to access the checked state of a CheckBox from a BackGroundWorker thread. I am utilizing properties and it seemed to work just fine. However, I'm using 10-15 CheckBoxes and I think using the InvokeRequired property would probably be best. I've looked over JMC's thread that talks about how to access controls from the worker thread a bunch of different times and I can't seem to grasp the concepts. When it comes to the InvokeRequired property, I suppose I understand why it is needed. But I'm not sure if I understand it completely.
From the example that JMC provides:
vb.net
Private Sub ResetTextBoxText()
If Me.TextBox1.InvokeRequired Then
Me.TextBox1.Invoke(New MethodInvoker(AddressOf ResetTextBoxText))
Else
Me.TextBox1.ResetText()
End If
End Sub
If I'm not mistaken, this tells us that if invocation is required to access the control, then we access via the MethodInvoker if not, then we just access to directly? So, if I need to check the checked state of a check box, I know I can just put a conditional statement after the Else line if I can access it directly. But, if I can't how would I use MethodInvoker to check the checked state? And then, when calling it from the worker thread, would I just call the sub?
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