Remove An Item From List?
Aug 16, 2009I have a BindingList (of Class) list that is the source for a datagridview and I'm trying to figure out how to remove a selected line from the list.[code]...
View 2 RepliesI have a BindingList (of Class) list that is the source for a datagridview and I'm trying to figure out how to remove a selected line from the list.[code]...
View 2 RepliesI need a piece of code which will remove a highlighted item from a listbox.
View 3 RepliesI use this function to remove items in a listbox that I add programatically.. using the item.add.But i need a value with it so switching to databound ListBox. How can I remove an item or add an item without getting an error that "Items collection cannot be modified on a databound object"[code]...
View 2 RepliesThis is my problem, i have created a series of lists of stock items, i now need to remove items in one of the lists that exist in another list. simple enough except the quantity of stock is not necessarily the same so removing an object of the type stock wont work as they are not identical (stock amount not the same) any ideas on how to remove this item from my list?
View 8 RepliesHow would you remove an the last item of the list (of strings) when you don't know the index of the last item and it varies every time you run the program? Would I be better off using an array instead?
View 2 RepliesI am having problems removing an item from a List(Of Integer). I see you can remove it by doing a remove with the index, but I assume you can do some type of function where you provide the value that you want to remove and it removes it. I found it on the List(Of String), but not Integer.
View 1 RepliesHow 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.
View 7 RepliesI am trying to remove my current item in for each loop if some criterai matches but its triggering error after removing and looping again.
[Code]...
I am using myBookedRooms.remove but its trigerring error so what can be the correct way for doing it? ie, remove booked room if the room id matches with selected one
Does anyone know how to do this? I'm stuck on a boat right now out to sea(Navy) and don't have access to vb.NET, its in my berthing...
So someone clarify this code and see if it works?
Dim index As Integer = list.FindIndex(Function(value As String)
Return value(0) = "STRING HERE"
End Function)
I'm having issues with finding something in list, and removing the item, ignoring the case of characters in string.
The code goes:
Dim listItems As New List(Of String)
Dim pattern As String = "AbC"
Dim array() As String
array = {"ABC", "abc"}
listItems.AddRange(array)
Here I'd like to remove all items from listItems, that are abc, no matter what case single characters of item are, including mixed case items. So in this example, every items should be removed
listItems.Remove(listItems.Find(Function(r) r = pattern))
If I change pattern to match the case of item, then item #2 gets removed:
pattern = "abc"
listItems.Remove(listItems.Find(Function(r) r = pattern))
How can I find item in listItems, ignoring the case characters in pattern?
i i have a listbox and 1 button in my application thing i want is when i click on some listbox item auto press that button or when i click on some item in list box it remove selected items from list box just with mouse click
View 3 RepliesI have a list box on the form which functions as a copy/paste. When you copy something, it is automatically added to the list box as a "clipboard helper". Here is the problem,however: if the text is more than 1 line, the list box does not show all the text.It ends up looking messy.So getting back to my question, is it possible to make the list box item height for an item depending on the amount of lines that item contains?This is a one line sentence in the list box and should take up one line.This is a multi line sentence in the list box and should take up two lines for item height.
View 11 RepliesI have used the command:
For Each Proc as process in process.getprocesses
Combobox1.Items.Add(Proc.MainWindowTitle)
to populate a combo box with the list of current process windows, however for every process that doesnt have a main window title there is a blank space, is there a way that I could tell it to not insert the item if it's mainwindowtitle field is blank?
I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.
What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.
[code]...
As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?
How someone would select an item from a list box and click a button and have that item go into another listbox with it's price? I seem to be stuck on this part.
Here's my code:
I want to select the first option from the first listbox and I want to put it into another listbox along with the price of that item on the same line in the listbox. I can't seem to figure out how to that.
Public Class Form1
Const dcmPRICE_STRESS As Decimal = CDec(595.0)
Const dcmPRICE_TIME_MANAGMENT As Decimal = 695
[CODE]...
my program downloads into a combobox every item(line) that is in a text file located on a server.
Every line in the text file ends with "a)" or with "g)".
Now I just want to make 3 radio buttons:
- one that will allow the download in the combobox only the item ending with "g)"
- one that will allow the download in the combobox only the item ending with "a)"
- one that will allow the download in the combobox of both (I already know how to do).
How can I do so?
To download the entire list in the combobox I do:
Dim List As String = client.DownloadString("http://mywebsite.com/mytextfile.txt)Dim lines As String() = List.Split(New String() {ControlChars.CrLf}, StringSplitOptions.RemoveEmptyEntries)ComboBox1.Items.Clear()
ComboBox1.Items.AddRange(lines)
how whould I go about deleteing an item from a listbox and it will select the next available item.you know like the treeview control selects the next node if you delete one.
View 2 RepliesPublic Class notifierMain
Public Class Contacts
Inherits List(Of row)
Public Sub New()
[code]....
When I debug this winforms application I get curType = "notifier.notifierMain+Contacts+row" I want to the Validate function to know it is in MyContacts. How do I do this?
i want to stop accepting form drop down listbox if certrain criteria is not met [code]how i can cancel the selection of drop down list?
View 3 Repliesi want to search item A (from a list of X items) in list B but i want to get the item not found example Search ITEM A in LIST B if not found then return a print....if found continue with ITEM B..and so on.
View 5 RepliesBelow is the code that will and does add to listview1 when triggered, but, will not remove it. I have spent a lot of time trying to figure this one out. There is not any error even when I step through.[code]...
View 2 RepliesIm working on a program for a class project and part of it im required to remove one selected item from a listbox, in my case "lstCart" i have to first check if there is an item selected by the user, in which case i have to remove that item. Secondly, if there is no item selected i have to display an error message telling the user that they have not selected any item to be removed. Can anybody help me with this code? Ive tried a sort of nested if statement but that didnt seem to work very well.
View 2 RepliesI'm loading a file into an ArrayList, then looping through the ArrayList and each time adding a DataRow to a Datatable, then using the Datatable as the DataSource for a GridView. My problem though is that the file has one field at the end that I don't want to display. I'm not sure though how to not to add it as a DataRow or what to do so that it won't be displayed. Do you know what I might do. This is my
' Declare and setup a StreamReader object to read the file
Dim objStreamReader As New StreamReader(fname)
Dim arrText As New ArrayList
[Code]....
I have a listview that has multiple entries and each entry has 2 subitems. I am wanting to know how to remove each item in the listview where the subitem(1) equals a certain string.
View 1 RepliesI'm having trouble with removing an item from an ArrayList. I've done it many times, I just can't seem to figure out why it's not working this time around.[code]...
View 10 RepliesI have a listbox that have some dates, what i need is to check every date if it is found in my database or not if yes i need to delete this item. i tried to do it but it gives error "InvalidArgument=Value of '3' is not valid for 'index'. Parameter name: index"
[Code]...
Tell me what I am doing wrong with this coding as it seems ok to me?
If any items in listbox2 is identical to items in listbox1 then remove from listbox2.
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I have a List myList of MyObjects. Is it possible to check if myList contains a particular myObject based on a property of myObject in VB.NET? In C#, you'd something similar to this right:
myList.Exists(myObject => myObject.property1 == 3)
I have a List(Of MyObj), and I want to iterate through that list and compare each element to all other elements in the same list, excluding (if possible) the same element. I have a solution that works, but it's slow and uses double For loops. It may possibly have also summoned Cthulhu from his sleep. This below is a sanitized version of what I have:
Dim MyList As New List(Of MyObj)({Obj1, Obj2, Obj3, Obj4, Obj5, Obj6})
If MyList.Count > 0 Then
For i = 0 To (MyList.Count - 1) Step 1
[code]....
I want to know how to test the 1st list box if it has items more than the other list box but by one item, here is what i have: If lstInvisibleTv. Items.Count > lstInvisiblePc.Items.Count Then it works good if the lstInvisibleTv list box is greater than the other list box by one but it also works if it is greater the other one by one or more which I do not want. I want it to work just by one.
View 3 Replies