[2005] ListView SelectedIndexChanged?
Jan 29, 2009
I have two listviews with many items present. When the user clicks an item in ListViewA, I highlight items in ListViewB. I use the SelectedIndexChanged event of A, loop through the items in B and set some highlighting colors, ensuring visible etc. This works fine.However... it would be nice to allow the user to MultiSelect. The problem here is the when selecting 10 items in A (holding the shift key down), the SelectedIndexChanged event fires 10 times, once for each item added into the selection. This is a real pain since my highlight sub then runs 10 times and it takes 10 times as long.Now... I had a plan to deal with that, I detect the shift key being held down and inhibit the event until its raised. That works fine too.But... if I have 10 items selected, and then I click one new one, so 10 are being deselected and one being selected, the SelectedIndexChanged event fires 11 times. So my situation has not improved. Any ideas how to wriggle out of this?
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Apr 13, 2004
I have a ListView that populates some fields whenever the user selects an item. However, if they change the data in the fields and then select a new item without saving, I want to display a message box that warns that their changes will be lost, and asks them to confirm whether to continue. Sounds simple.
Unfortunately, the ListView's SelectedIndexChanged event cannot be cancelled, and it's actually called for each change in the selection. So, for example, if item 1 is selected and the user then selects item 2, the event is called twice: once to remove the selection of item 1, and then to add the selection of item 2. If you go from having one item selected to having five (for example), the event fires to remove your original selection, and then again for each of your new selections - six hits in all.
Obviously, this makes it a bugger to determine when the event should be cancelled and reset back to the original. I obviously don't want my message box appearing six times....
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Aug 12, 2011
I have a list view, of which I want to find the index of... Using the click event, I have no problems at all with this code, but SelectedIndexChanged throws this at me:
[Code]...
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Jun 8, 2012
I have a few reasons that I need this to happen, but suffice it to say that when I use the event handler for the RadioButtonList the sender object returns as just the RadioButtonList, and I need more information from the GridView because that's how I can uniquely identify which record my RadioButtonList is tied to.I added an "OnSelectedIndexChanged" property to my GridView but it doesn't fire/handle when I want it to. I'm assuming this has something to do with the way the GridView is designed to work. I also thought about using a hidden field, but I can't add it to the RadioButtonList so it won't help unless it's global. The problem with it being global is that I can't set the value uniquely to the record that has it's RadioButtonList being altered.
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Aug 27, 2009
I am trying to display the listview subitem in the Listview .Actual Problem Dispaly:I have to dispaly the three values :
BARcode CheckoutFlag TAGUID
L00657 Loo657 E00010003E
But ,I am getting the wrong display:
BARcode CheckoutFlag TAGUID
E00010003E Loo657 E00010003E
I am unable to print the barcode value.where ever Ia m able to display the Little value.The main two functions are below.
vb.net
Private Sub rfLoadtoList(ByVal iBarcode As String, ByVal iTitle As String, ByVal ImgIndex As Integer, ByVal bgColor As Color, ByVal frColor As Color, ByVal cFlag As Boolean)
Dim Srnumber As Integer
[code].....
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Jan 23, 2008
VB.NET 2005
Anyone has a quick way to copy a listview to a new listview?
It tried the following, but it crashes ..
Dim arrTemp(lvwTemp.Items.Count) As ListViewItem
lvwTemp.Items.CopyTo(arrTemp, 0)
lvwObjectsFound.Items.AddRange(arrTemp)
[Code].....
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Feb 13, 2012
What I want to do here is that for every new item added into the combobox the label will +1 from the previous number. How do I write it out assuming I didn't assign the items a number [Code]
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May 13, 2009
Why would this event only work once, the first time I select an item? If I select another item off the list nothing happens.
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Jan 29, 2010
I have a combobox which is bound to a bindingsource.
What's the correct way to get the combobox selectedvalue on the selectedindexchangedevent?
is combobox1.selectedvalue correct or must I use the bindingsource to get the value?
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Sep 11, 2011
I already deleted the record in my database and my problem is How can I update my listview that i already deleted the selected item it wont delete in my listview i have no clue how to do it??can someone elp me with this. . . .
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
Dim SQL1 As String = "DELETE FROM Employee WHERE Employee_ID = '" & ListView1.SelectedItems(0).Text & "';"
Dim cmd As New MySqlCommand
Dim table As New DataTable
[code]....
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Apr 21, 2009
I associate the listview with the imagelist..Set property of listview SmallList to Imagelist..I want that on listview click. I get the icon name....But i m not getting how to get icon name..Mine code below--
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
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Jul 9, 2011
I am working on the listview that I have got two columns, the one that it goes for the images and the other one goes for the text data. I can extact the text data, but not for the images.
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Dec 31, 2009
Following codes work fine to go t next record record in Listview.What will be the codes to go previous record.
[Code]...
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Jan 16, 2012
i have a textbox with text in a few lines.. i want that to be organized in a listview as an item and 2 subitems... if there's a 4th line then it should again go as a new item.. how can i do that..
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Jan 11, 2012
I have a GridView, without using SelectedIndexChanged, how can I retrieve the value of each row from GridView when click on each button in each row?this is my aspx code
[Code]...
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Sep 29, 2010
I have a situation where I'm allowing users to enter new values into a combo box or selected existing values from the combo box's drop-down list. Is ther any way to tell whether a value was entered or selected? I've looked at the TextChanged and SelectedIndexChanged events and neither will do what I need to do.
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Nov 24, 2010
I am using VB 2010 express edition, using windows form, i set my access database using the database connection wizard, and then use a combobox and bind it to the database using the properties windows, while other fields of database (set in textbox form), i drag it to my form. Running it, the values of textboxes are correct when i changed the value of my combobox. I want to use these values in textbox in drawing circle, whenever i change the value of combobox, the circle will also change using the combobox selectedIndexchanged event, my problem is, the value in textbox does not update in order to draw the circle, i have to use lostfocus or leave event to correct it. I make also a combobox and textbox not using this Ado.net(correct me if im wrong), it is working using the selectedindexchanged event only, what seems be my problem,
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Jul 31, 2008
On a form I have a DataGridView. Inside this DataGridView i have several columns of which one is combobox and the others are textboxes.The combobox column is populated with values from a MySql database table using a query. So far so good. What i want next is to populate a certain textbox from that DataGridView, automatically after a value from the combobox is selected. When a value is selected from the dropdown list of the combobox, that value is used in a SQL query to find the value that will be displayed in the textbox.All the textboxes and the combobox are inside the DataGridView!)I did this using DataGridView EditingControlShowing event because a DataGridViewComboBoxCell does not have aSelectedIndexChanged event.The value is displayed correctly in the textbox, but the problem is that the value selected from the combobox disappears after the selection, and the combobox remains empty. I need the value to remain in the combobox after it was selected and after the corresponding value was inserted in the textbox!Here is the code for this:
Code:
Private Sub test_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Populating the combobox
[code]....
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Feb 16, 2010
I have combo box selectedIndexChanged events going on but I cant figure out how to get the value out of them so that when i hit the btn_ProjSal that the new salaries show up in the 3 labels. Here is my code. Doing it straight from the selectedIndexChanged event this works..but to get the button to pull the new values from each of those events is my issue.
Public Class Form1
Dim _emp101Sal As Decimal = 10000.0
Dim _emp102Sal As Decimal = 11500.0
[code]....
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Mar 3, 2009
For some reason I have always used the SelectedIndexChanged property to take action when something is clicked (I guess because this is the default property? ie when you double click the listbox this is what you get). However I have often come across problems when I try to unselect all the items in the listbox by calling
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Dec 15, 2009
Here is the basic problem. When a listview is set to multiselect = true, the electedIndexChanged event fires for every row. This is very bad in a situation like the following psuedo code:
MultiSelect in listView (many items)
Clear any items that are selected in GridView
find that item in gridView using a brute force compare
[code].....
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May 17, 2011
.net 4.0, ASP.net, vb.net. I've got a usercontrol that is using an obout combo box. The obout is a cascading combobox that has 3 levels to it. when something it selected from the third level of the combobox, it is suppose to fire off a selectedIndexChanged event. This happens the first time that I select the usercontrol. The problem is if i want to go back and select something different. The selectedIndexChanged doesn't fire. I've set breakpoints and the AddHandler ComboBox3.SelectedIndexChanged, AddressOf ComboBox3_SelectedIndexChanged
runs just like it did the first time i select the usercontrol. But the selectedIndex just doesn't fire the second go around. Was wondering what i'm doing wrong. Here is the selectedIndexChanged that is not firing
[Code]...
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Mar 11, 2011
I have a datagrid view on a page that I'm making and I want to be able to open another form when a user "selects" an entry. I've tried looking through the documentation on how to do that but can't seem to find any. Does anyone know of an easy way to accomplish this task?
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May 20, 2011
In the attached program, I have 3 listviews.
1 is Source Invoices
2 and 3 is Customers.
When I drag something from ListView1 - it stays there, and turns a different color to show it has already been assigned. It stays in the list. This is what I want. When I drag something between 2 and 3, it should delete from the source and clone to the destination. It does this when I move 1 at a time, but if I select multiples (try 5 records) it does 3 of them, then the source list gets an error:
System.NullReferenceException: Object reference not set to an instance of an object.
If I highlight all 5 items in list 2 or 3 - then select the top item as the item to drag across, it seems to work.
If I highlight all 5 items in list 2 or 3 - then select the middle item as the item to drag across, it seems to NOT work.
I have tried going from top of list to bottom. Then thought, since I am deleting rows, maybe I should start at bottom and work up. Same thing?
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Jul 13, 2009
I'm making an explorer sort of program, and I want to be able to drag files into folders to move them. I looked in the events of the ListView, and there's an ItemDrag event, but no ItemDrop event. I'm probably missing something obvious, aren't I? How do you do it?
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Oct 9, 2009
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[Code]....
I have even write the code to select the first node,i want first row should be blue(Selected). But its not coming to be blue?
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Mar 23, 2010
I have the following scenario. I need to take a listview that is in details mode and output the data to a tab-delimited file. I've always been perplexed as to how listviewitems and subitems relate to each other. I have the following
For Each Item As Windows.Forms.ListViewItem In ListView.Items
For Each subitem As Windows.Forms.ListViewItem In Item.SubItems
Next
Next
My concern, however, is that the subitems that are in the item.subitems collection are also a part of the main ListView.items collection.
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Apr 2, 2012
I'm working on my listview to extract the strings from my php source. I want to check for each array in my listview when i finds the matches of html tags "<span id=""mystrings2"">Enabled", then tick for each checkbox in the listview when the matches are found.
[Code]...
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May 27, 2012
I have got a problem with adding the listview items in the label, when I select the checkboxes in the listview I keep getting the same text to add in the label when one of the checkbox is ticked.
Private Sub listView1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
For i As Integer = 0 To listView1.CheckedItems.Count - 1
If label3.Text = "" Then
[code].....
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Jun 1, 2012
How I can find the index for the listview on a listview click event to something like this:
Private Sub listView1_Click(ByVal sender As Object, ByVal e As System.Windows.Forms.ItemCheckEventArgs)
MessageBox.Show(listView1.Items(e.Index).SubItems(1).Text)
End Sub
I don't want to use for each integer in the listview as i would keep getting the loops which I would hate to use it. I only want to use something like e.Index.
I know that the index is not a member in e, but I don't want to use listview item check event due to loops.
how I can find the index for the listview items without using for each integer as only using e.index?
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