VS 2008 - Delete Selected Arraylist Item
Apr 28, 2011how do I do the code if I wanna delete a selected item from the array list and not all the items store in the array list? [Code]
View 2 Replieshow do I do the code if I wanna delete a selected item from the array list and not all the items store in the array list? [Code]
View 2 RepliesI am making a password program that remembers what the password is for and what the password is. I have two listboxes: 'listbox1' for what the password is for, and 'listbox2' for the password. I also have a remove button. I would like it so when you press the remove button, the selected item in listbox1 is removed and the password in listbox2 is also deleted. The passwords are stored in two settings: what, and pw. The items that will be deleted will have the same value. By value i mean they will be the same number item. E.G. the 1st item, or the 3rd item in the list.
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I have the below code that works great, until you have multiples of the same thing.example of data
burger
-tomato
+tomato[code].....
if i select the +tomato in wrap it remmoves the +tomato in burger (deleting the 1st oocurance of it) how can i fix that. i have played alot and can not figure it out.(ps the other list boxes are other data but it needs to remove the same "line" as each other. they are all changed to the same selected index when 1 is changed)
Dim value As String
Dim value1 As String
Dim value2 As object[code].....
How can I delete a row from an SQL database based on what item is selected in a listbox?
View 7 RepliesI have a list of registered users in gridview...
I want when i click on delete button on selected item in gridview, then the record of user will be deleted from the whole database... on single delete command of sqldatasource in gridview....
When I run the program it will populate the listview but when i delete the selected item it will clear all of my records in my listview. . . .can anyone elp me with this??This is my code. . . .
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i have a databound combobox using VB2010 and MS access as the DB.. When i click on a button, the selected item in the combobox will be deleted from the database and no longer display in the combobox...
View 1 RepliesI trying to make a code to Delete and Update Access 2007 database after remove a selected item from a listbox in VB 2008. [using "Remove" button that i create] pervious i already make a button to View data from database and Remove from listbox. but i don't know how to delete and update in database.
The code i using now:
CODE:
In the database, i have ID,Name and Age (simple database)
I have a list of names in a database and what i want is to get all of these names and display them in a label or a text box to the user on the website. I have tried to do this using a for loop but it is always overwriting the label each time. I have a list of 10 different names in the database and what it is doing is putting the first name in the label and then overwriting this with the second name and so on until it reaches the last name. I think i need to store each of the names from the database into an array or an arrayList and then make the label display all of the contents from the array or arrayList. The for loop i have used for this is:
Dim g As SQLadmin = New SQLadmin()
g.DB("SELECT nameOfPerson FROM Persons")
For i As Integer = 0 To g.array.GetLength(0) - 1
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i can select the names from the database and store them in an array then make the label display each of the names.
I got a problem with this code for delete button. I want it to delete the row with the listbox (lstMicro) selected item in "Microscope" column. The code below gives me an error message "Conversion from type "DataRowView" to type 'string' is not valid." What did I do wrong?
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In my application I have a listbox and SelectionMode should be MultiSimple because users need to see which items they selected. In another tab we have another listbox this one should show all the selection users had done in first tab. Private Sub
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Okay so i have one list box and inside of it i have 4 items.Okay so what i want to do is.For example If the user selects item 1 i want msg to pop-up and say 1.
View 2 RepliesIs there a way to see if an item is selected in a listbox?
View 13 RepliesI want to Make the College: text-box to be AutoComplete and i want to add a Settings where it can add or delete AutoCompleteSource Items
and stores the collection in My.Settings Type is system.collection.specialized.stringcollection
ok I made my self a listview with a checkbox on it. I was wondering if it was even possible to add something to my form so when I build my project and I rightclick on my list view item a menu will open saying:
delete item
Clear Item
A menu (not a form) just like when you do a right click on your mouse.
I wantt o change the selected item in a combo box if a user enters a name which is already in my dataset. The Combo Box is linked to my database set and all the other text boxes are linked using my databindingsource.How can I do this, I have this code but it does not change it.
vb.net
Try
Dim name As String = ""
Dim inputname As Object = TextBox1.Text
[code]....
I have a listview, and when you right click, it shows some things. I need to make it see if an item on the listview is selected. Is there a way to do this?
Like, this doesn't work, but in code it would be like
If listview1.HasItemSelected = true then'code here end if
I want to retrieve the selected item in my listview as a string. I have 2 columns, Name and Version. When i click a button it should come up the value of the column Name of the item that is selected.
Something like this:
MsgBox(Listview1.SelectedItems.Text)
I have a datagrid being filled by the data adapater connected to my database.I have a delete button on the form, i cant figure out how to delete the selected row on the datagrid when the delete button is clicked.
View 1 RepliesI have a little problem that i want to show a "sub Combobox" with the help of super combobox. i don't know it is possible or not becux i'm beginner in VB.
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How can I delete a row from an SQL database based on what item is selected in a listbox?
The listbox is populated by the database, I bound it to the data source.
I tried this code but get an error:vb
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim myCriteria As String = CStr(ListBox1.SelectedItem) Dim deleteStr As String deleteStr = "DELETE customText WHERE userText = 'myCriteria' " End Sub
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i have a listbox (listbox1) which is populated via the user selecting a folder and the listbox1 displays all the subfolders of that folder, and a second list box (listbox2) which display all the files within the folder selected in the 1st list box.
And i have a checksum scanner on the same form, which when the 'scan' button is clicked i want to scan the listbox2 selected item, but i cant seem to get it working, heres my
Private Sub scan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCrc.Click
Dim c As New CRC32()
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how to, by a listview selected item make an picturebox appears?for exemple. got a listview in a form, and a hide picture box, and when i select an listview item, the picture box appears, turn the visible to true.
View 6 RepliesWhat I need to do is read an ArrayList in My.Settings and add another ArrayList to it. The first think I'm trying to do is load My.Settings.Records into myArrayList. I'm not quite sure on the proper way to do this. I've tried things such as Dim myArrayList As ArrayList = My.Settings.Records, I'm not sure if I need New and I'm not sure if I need .Clone or .CopyTo.
Then I have another ArrayList myArrayList2. To get this into myArrayList I've done: [Code] Then to save it back to My.Settings I've done. My.Settings.Records = myArrayList. The problem is I keep on getting Object reference not set to an instance of an object error on the AddRange line. My.Settings.Records is definitely an ArrayList and it will sometimes = Nothing. The objects will only ever be strings.
I am defining an ArrayList type varaible. It can have of any type of items. I want to know the type of its item. Is there any way to know the type of items in the arraylist variable? I want to know the type of item in the for loop.
Dim ArrList As New ArrayList
Dim A As Integer
Dim s As String
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I'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 this code
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And I select one and it works! But when I try to select a different one it comes up with an error on..If ListView2.SelectedItems.Item(0).Text = "None" Then
The error..InvalidArgument=Value of '0' is not valid for 'index'. Parameter name: index
I have 13 variables, all called Items1, Items2, Items3 and so on. I have a combo box with items in, each time I click a button I want it so whatever is selected is stored in a variable and if the button is selected again then it stores whatever is selected in the next variable. I know all the code for selecting items in a combo box and transferring it to a variable but the problem I cannot do is the part where each time a button is clicked it stores whatever is selected in the combo box to the next variable.
View 9 RepliesI'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.
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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?
After executing a query with LINQ to SQL, the result I have is an arraylist (.ToList) of items with ID numbers. The number of items and their occurences will vary with each query. would simply like to count the occurences of each specific ID in the list. How do I do that?? The only count function I know of (.count() ) is for a count on the entire list. I've also I've been reading on how to loop through the list items but I don't understand how I can do that if I don't know how many specific ID's there will be from each query
View 3 Replies