Checking Multiple Items In A Check List Box By Variable Values?
Oct 31, 2011
I've never really used the Check List Box in the past, however, for the recent program I am developing, I am using this control rather than individual check boxes scattered across the form.Anyway, I want to be able to program through code which items get checked in this checked list box. Specifically, I have a variable that contains the text of each check box that I want checked.With a normal check box, I can simply say:
Dim strNames As String
strNames = "John Doe, Mark Johnson, Mike Brown, Cindy Smith"
If strNames.ToString.Contains("Mike Brown") Then[code]....
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Apr 5, 2010
How can I get all the selected values from a check list box? I tried using the name of the check list box (clbLike) but it only returns the first value checked. How can I return all values checked?
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Feb 20, 2009
I have declared a class in VB.NET using VS2K5 with some shared variables and made that class a dllI made use of that dll in another project and tried to make use of those variables. Even though I can able to make use of them, Im unable to view the values of those variables like the values of normal variables when Im debugging. Is there any way that I can watch the values of those shared variables during debugging.
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Mar 13, 2012
I have a checkedlistbox with numbers in it and I'm trying to load a list of numbers from a database and check all of them (they should all be in the checkedlistbox).
I was trying to do this by loading all the values into a separate listbox using my own subroutine (I know that part works) and then finding the corresponding item on the checkedlistbox, like this:
Dim ItemName As String
For Each item In ListBox1.Items
ItemName = ListBox1.GetItemText(item)
If CheckedListBox1.Items.Contains(ItemName) = true Then
CheckedListBox1.SetItemChecked(CheckedListBox1.Items.IndexOf(ItemName), True)
End If
Next
End If
But this doesn't work: It never returns a match, even when the item is definitely on the list. How do I make this work?
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Feb 17, 2011
I am making a virtual crafting application (similar to that done in Minecraft)
currently I have made a test "crafting recipe" which checks if the listbox (mixbox) has 1 window, 1 door and 1 wheel. the code looks like this:
If mixbox.Items.Contains("window") Then
If mixbox.Items.Contains("door") Then
If mixbox.Items.Contains("wheel") Then
[Code]....
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Jul 6, 2011
I want my program to check the pagerank of all string list items, and than add it do a listbox. Now this is my code to open a list and add it to a string list ( itemlist as list(of string)
Dim stream_reader As New IO.StreamReader(OpenFileDialog1.FileName)
Dim line As String
line = stream_reader.ReadLine()
Do While Not (line Is Nothing)
line = line.Trim()
[Code] .....
I'm using the DLL from this website: [URL]. The problem is that it only checks the first website and the other websites will be 0/10 automatically while they might be 3/10 or something else.
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Apr 16, 2012
I have an invoice that lists several items that one person has ordered. I want to take this invoice and every time I check the item it removes one of those from another list i created called item details. I added items to this list using the item collection in the listbox.. I have invoice one that has a pink sock ordered. when i clicked this box next to it I want my total pink socks of 12 to move down to 11... the detail page and the invoice are two separate pages.
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Feb 17, 2010
if i pressed the RadioButton .. ENGLISH.. only Teacher's which teach English will be displayed in the listbox and so on. there is in access table called TEACHER which has all these information. i used the following code for displaying the TEACHERS' name in listbox and it worked pefectly but what i want is displaying according to radiobutton checked.
Sub conxn1()
Connection.Open()
Dim da As New OleDb.OleDbDataAdapter("select * from Teacher ", Connection)
[Code]....
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May 7, 2011
I have 5 checkboxes in total.I want to check how many checkboxes have been checked.I dont want to write checkbox1.checkstate,checkbox2.checkstate and so on...How do I accomplish this effectively?
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Dec 26, 2011
Basically I have a form which has 2 drop downs. In the 1st drop down I am selecting City category. When the city is selected I want to update the 2nd drop down values in correspondence to 1st value choosen in 1st drop down. I have done like this,This adds the value in the 1st Drop Down:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim s As String = "connection String"
sqlconn = New SqlConnection(s)
[code]....
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Jul 11, 2011
A couple of questions about check list boxes:
How to check/decheck all the item in the list How do you copy or delete all checked items in the list
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May 15, 2011
I want to check If a variable is equal to some values or not, for example:
if a = 1 or a = 5 or a = 7 or a = 10
is it possible to do it like sql:
if a in (1,5,7,10)
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Mar 15, 2011
I have a List(Of DateTime) items. How can I check if all the items are the same with a LINQ query? there could be 1, 2, 20, 50 or 100 items in the list.
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Jul 19, 2010
I have a list with a boolean value as one of the properties. I need to check if every one of these is true. Now normally LINQ would give a nice clean answer here, but as I am using .NET 2.0 I can't use that.If there a nicer way to do this or am I going to have to do a for each loop and break out on finding a false?
Edit:Seems I could have been a bit clearer. I have an object in a list (eg List (Of MyObject)). There is a boolean property on this object called Processed.I need to check that all objects in the list are processed.So in LINQ I'd do:if (from o in list where o.processed = false select o).count = 0 then....
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May 12, 2011
how to get the selected items from a check list box...i have 7 items in it, need to see which ones are selected...and how to clear the checks from the list box?
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May 15, 2011
I would like to disable a specific items from DropDownList. I have below code but it does not working. So, need someone to told me what I'm doing wrong. DropDownList have 5 items.And, I'm getting error:Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 <> 1 DropDownList1.Items(X).Enabled = False End Sub
But, if I add a different value for X, then it disable 1st and 2nd item. Protected Sub CheckBox1_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged Dim X As Integer = 0 or 1 DropDownList1.Items(X).Enabled = False End Sub My goal is if I would have a 365 items in DropwDownList to disable items for example between 120 and 150.
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Feb 12, 2010
I've populated my list variable from my dataset. How do I display the values of the list variable in a message box? Dim strList As New List(Of String)
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Oct 4, 2009
I am developing a VB web app in VS2005, and I can't figure how to do somehting. Can anyone suggest a way to gather up (non - postbacked) checked items (checkboxlist) on a web form (and of course write them to a file), and then start the report using a new window? If you suggest using htmlwindow.opennew, then I need to know what the constructor looks like for that. Can I get btnReport.click in my aspx.vb code to execute before it is sent to the report form by the "OnClientClick" asp command?
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Dec 30, 2008
i have a check list box. i want the user to limit, selecting maximum of three items from the checklistbox. if user select more than that i want a msgbox to prompt.
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Jul 6, 2010
I want the program to check the number of items in a list box, then send use that number to form a FOR loop and send each to the serial port individually. It actually sends everything, but the program always crashes after the last one saying that the sdprintcount variable is an invalid number for the index. I don't get it as this happens no matter how many items are in the list, and it always crashes on the last one. It sends it, but then it says the index number is invalid.
*********************************
Dim sdmods As Integer
Dim sdmodsp As String
sdmods = sandwichmodlist.Items.Count
[code]....
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Jan 26, 2012
I have a question about comparing values inside of a List. I have a single list of strings. Inside the list are multiple values. The values are arranged so they can be dumped into a spreadsheet.
Example:
Private ListOfStrings As New List(Of String)
ValueA(0), ValueB(1), ValueC(2) 'These three values are the same as the three values in the 4th "row" below
ValueD(3), ValueE(4), ValueF(5)
ValueG(6), ValueH(7), ValueI(8)
ValueA(9), ValueB(10), ValueC(11) 'These three values are the same as the three values in the 1st "row" above. Since this is a duplicate, I need to add a "count" of value 2 and then delete the values of this row from the List. Etc...
Each line above represents a "row" in a spreadsheet. All three values in each "row" have the potential to be the same. So, I need a way to A) Compare and count all of the common "rows" (using only the first value from each row) and B) If common "rows" occur, I need to delete all but one row from the List. ListOfStrings.Remove ?
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Sep 12, 2010
I have 4 checkboxes available, what I want is the user to be able to select as many of the four checkboxes.Each of the four checkboxes have a value, but when i set the code it only selects the first checkbox and only adds the first checkbox i select to the totals, rather then all selected checkboxes.The values have been set in the module and all the values appear correctly, they are just not adding all together when i select more than one checkboxHere is what I have in the calculate button.
Dim PriceDecimal, DiscountDecimal As Decimal
'Find Price of Service
If MakeoverCheck
[code].....
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Apr 19, 2010
How would I add multiple items to a dynamic list without having to use the .Add method for each one?[code]...
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May 2, 2010
If I have 3 times selected and when I click "submit" for example I want all my selected items to be removed, but when I try to do this only my first selected item is removed.
ListBox.Items.Remove(ListBox.SelectedItems)
How do I remove all 3 items from the list box at the same time?
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Oct 1, 2010
On my form I have 3 textboxes. They get their data from a database query. The trick is the database may return 1 result or up to 3. If the query returns only 1 result, I want the first textbox populated, 2 results, 1st and 2nd textbox populated, etc... I also want to be able to track CurrentItemChanged Event for updating purposes. My initial thought was to use a list object as the binding source but how would I cycle through the list if it returns more than one so that I can assign the values to the 2nd and 3rd textboxes or if data is entered in to a blank textbox I want the currentitemchanged
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May 12, 2010
I'm trying to add multiple items to a list box from a database but I'm having a few problems getting it to work. Below is the code i have so far but for some reason it will only add the last field in the database to the listbox and not the remaining 12.
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Jul 14, 2011
Using Visual Basic in Visual Studio 2008, I have created a Windows form with multiple tabs and questions. Each question has an associated drop-down listbox that the user will eventually click on to enter his or her response. My client has now informed me that she wants to change the standard responses in each response box. There are well over 100 drop-down listboxes, all with the same items, and they all must be changed.
I originally inputted the items using design view. Would someone please tell me if it's possible to edit all of these boxes in the design view simultaneously? When I control + click on more than one box, the Edit Items option that is normally available disappears. Is there a way to do it in code in a manner that would save back into design view?
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Sep 10, 2010
No matter how I try, I can't seem to create a nice and clean algorithm for doing the following:
System.Array (or generic List) data of System.Object
System.Array (or generic List) xval of System.Object
System.Array (or generic List) idxs of System.Int32
[code].....
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Apr 18, 2009
I am trying to assign integer values to the items in 2 different list boxes called lstWorkshop and lstLocation. I then want the equation, intCost = intDays * intLodgingFee + intRegistrationFee, to be executed and the result to be displayed in a third listbox named lstCost. This is what I have so far, but whenever I run the program the value that always gets displayed is 0, which is obviously not correct.
Public Class frmWorkshopSelector
Dim intCost As Integer
Dim strTotalCost As String
[code]....
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Feb 27, 2009
I used this code to created 2 combo boxes General and Specific...and Only show Specific (Combo when Combo A is chosen.....What i need now is to know how to assign specific values to the items in combo b (Specific).??? If i chose a sode, Fanta, i want the total price to be $10.00 (this price will show up in the finial price box..
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