I have a list view control on one of my forms in my program.If i click on a selected item and click on the delete button it gets removed. But i want it so that if i havent got an item selected i click on delete i get a message box telling the user to select an item to delete.
View 6 RepliesIm having some trouble figuring out how I should delete these items. I want it to delete the one I have selected in the listview and delete the corresponding item in the DB. Ive tried various combination's and this is the latest one I have:
[Code]...
So where am I messing up? I keep getting errors no work done but when I close the form2 and open it back up no DB items show up in the Listview. But I close my project, and open it back up and they're back. All while never changing in the DB.
I have an ini File which I use as an "index" of jar files. The Jars are declared in it like:
Name of the jar=c:Path
So when my application starts, the ini file gets loaded in a list view. I have a delete button, with which I want to delete the jars from the list view and the ini file. It must be possible to delete multi choiced jar references. so I thought to do it with for each, so that every selected item get searched in the ini and deleted. The Error is, that the String (is correct, I tested it with a messagebox) get analysed - Unknown escape sequence R (The error is between the ** **)
My Code:
Private Sub jarDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles jarDelete.Click
If Me.ListView1.SelectedItems.Count > 0 Then
For Each item As ListViewItem In ListView1.SelectedItems
ListView1.Items.Remove(item)
Dim GanzeZeile As String = ListView1.SelectedItems.ToString
[Code] ......
This is what I currently have but it's not deleting the items, just showing a message
Code:
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e
As System.EventArgs) Handles btnDelete.Click
Dim strTitle As String = ""
[code]....
I've been working on a little sidebar project for fun about a casino. It may have a couple of card games like, war and eventually 5 card draw. I haven't begun any card programming yet because I'm on a screen that shows players.
View 2 RepliesI have a List of an object, set to DataSource of a BindingSource, set to DataSource of a DataGridView. Then I added a DataGridViewButtonColumn which I want a click to remove that record from the collection. So I simply call collection. RemoveAt (e.rowIndex) from the DataGridView CellClick event. However this produces an IndexOutOfRange Exception; "1 does not have a value"..
So is happening here? I have maybe a vague idea, but would like to understand exactly which events are failing etc.. and what do i need to do to perform this action properly?
EDIT: This seems not to happen if I use a BindingList.. But when using a List, I get this problem..
What im trying to do is display my details in a listbox then the one that is selected frm the listbox is displayed in the textboxes and when delete button is clicked it is flagged at deleted??? This is what should happen!!:@
I kow there is definitely a problem with this piece of code im setting the index and length to constant numbers so if a different name is clicked it does not work!! is there another way to set this to allow for any length or index position??
CustomerIDTextBox.Text = DisplayCustomersListBox.Text.Substring(0, 4)
SurnameTextBox.Text = DisplayCustomersListBox.Text.Substring(5, 7)
ForenameTextBox.Text = DisplayCustomersListBox.Text.Substring(12, 10)
[Code].....
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]....
I'm a beginner, and this is an assignment - I have a form with a menu strip and a listview.I also have a separate class that handles everything.When there is data in the listview, and one row is selected, I need to be able to remove that row when delete is clicked in the menu strip.The code I need to use for the delete is below. Currently it's just sitting in the class, and I don't know how to use it.
Public Sub Delete(ByVal item As employee)
If IndexOf(item) >= 0 Then '"IndexOf" looks for item, returns -1 for not found
DeleteAt(IndexOf(item))
[code]....
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]...
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]...
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?
My program takes a checkboxed item and depending on the serial number that is present on the item on the invoice, subtracts one from the amount list I have the following in a listview on a details page which I added with the following code:
Item - Low Socks(pink)
Serial # - 34-75-860
Price - 5.89
Amount - 12
[Code]...
Right now it doesn't look like it does anything. I have tried changing my index's on my subitems to 1 and 3 instead of 0 and 2 but i figured because they are subitems that they need to be subitem index 0 and subitem index 2 since there is one item and three subitems to that one item.
i have a listview with few records im able to delete the records from the listview but after deleting the record the listview is not getting refreshed [Code]
View 4 RepliesI am trying to delete an item from a text file based on if an item appears in a listbox but keep getting an error " Index was out of range. Must be non-negative and less than the size of the collection." The line it is returning the error on is the the first IF statement of the below text.
Code:
Dim Lines As new List(Of String) (IO.File.ReadAllLines("Carl.txt"))
For i As Integer = 0 To Lines.Count -1
If Lines(i).Contains (listBox1.text) Then
Lines.RemoveAt(i)
End If
Next
IO.File.WriteAllLines("carl.txt", Lines.ToArray)
End If
I have made an employee list and linked it to an Access database. The initial problem I was having is that in my program I had to link their ID's and names so if you click on an employee in the listbox, his or her's ID would automatically display in the textbox below. Since I did not know how to do so, I decided to make an array and store the ID and names separately while the listbox is being compiled. And so, the form became linked and adding became easy to code.But my problem came in deleting an employee. When deleting the name should be removed from the list, but this is where the order of the arrays messed me up. How do you maintain the order of the array? Here is the code I used. I dimmed 'count' as an integer and it is responsible for keeping that order.[code]You will see Staff_CodeTextBoxes etc. and info_Staff_CodeTextBoxes. etc.These text boxes (not visible to the user) are responsible for holding the data while the array takes the data from it, or adds it's own data to it.
View 4 RepliesHow 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
[Code]...
i want to format listview head of listview textalign = center and item of listview textalign = right
View 1 RepliesI need help on improving the performance of a program I wrote some time back. This is the main performance issue of the program below. Basically I need to look through some data that is displayed to a user in a list view and determine if the data is a duplicate of any other data in the list. If it is I need to delete the duplicate before my program continues.The below code does the job just fine, however the list view of data has approximately 30,000 rows of data. Hence looping this list 30,000 to the power 30,000 times makes the program very slow. Note subItem(4) in the data is the "unique" identifier that I later discovered was not so unique....
This was a work around function implemented in the code back when I wrote it (not meant to be permanent). I know that listView is not Ideal to store this much data.how to store the data in a more efficient manner or improve the performance of the Search and Delete [code].....
We are working on an asp.net 2.0 web app that emails users an ical to save to their outlook 2003 calendar. We noticed none of the code to update or delete an item seem to work even though the ical 2.0 spec supports it. We are curious if Outlook 2003 just ignores this?Does Outlook 2007 act differently?We have situations where an event may change or be cancelled which fires off an email notification but the updated ical just adds a new event, it nevers deletes and or moves the original.
View 2 RepliesI have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
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.
I have a form with a treeview and a listview. The treeview lists the folders on your system and listview shows the files in the selected folder, similar to windows explorer. I have a delete button for deleting files.
Dim i As Integer
For i = 0 To lv1.SelectedItems.Count - 1
Dim csi As CShItem = lv1.SelectedItems(i).Tag
[CODE]...
When deleting multiple files a confirmation message box pops up for each file selected. I would like to have it come up once and ask 'Are you sure you want to send these 'x' files to the recycle bin?' where 'x' is the number of files selected.
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.
I have a ListView with two columns, first column contains a list of urls and I want the second column to display the google pr for each url. I already have the code to get the pr but I am not sure how to add that value to the ListView sub item(second column)
Dim prCheck As New TGooglePR()
So how would I add the value from the above code to the second column for each url? I have the following but not sure how to get the value added to sub item
HTML
For Each item In ListView1.Items
i += 1
Dim prCheck As New TGooglePR()
[Code].....
How I can add a item in Listview under column 2?
View 4 RepliesThat's the code to add an item: ListView.Items.Add("ΑΑΑ") But how can i add a subitem to that item ("AAA") ???
View 1 RepliesI have a listview that is populated by file name from a folder on my hard drive. I want to add an image to the listview item, different image for each item. Here is my code:
For Each myItem As FileInfo In strFiles
ListView1.Items.Add(Path.GetFileNameWithoutExtension(myItem.ToString))
Next
[Code]...
When run the file name appear in the listview but the images don't.
I am making a listview and I want to display an Object.
View 4 RepliesMy overall goal is to add fake/unbound items to a listview control (for final HTML Table output reasons). This is a code behind solution. Users will not be adding items as it will be outputted in a rigid table.
I have looked at several examples and while this is easy for a dropdown it is not for listview.
The code below works without error, but my item is not shown on runtime. I think the class is not setting the item fieldname correctly, but I can't figure out the right syntax to fix it.
ColumnNameAList.DataSource = PeriodDataView
ColumnNameAList.DataBind()
Dim test As New Example1("ColumnNameA")
[Code]...