How To Check If Listbox Contain Selected Item

May 3, 2009

How to check whether the listbox contain selected item or not in vb.net.

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Listbox Check If An Item Is Selected?

Jul 2, 2010

Iv been trying to figure this out for hours ok so basically i need a to check if there is an item selected in listbox1Heres the code in trying to make work

If ListBox1.SelectedItem = True Then
ListBox2.Items.RemoveAt(ListBox1.SelectedIndex)
ListBox3.Items.RemoveAt(ListBox1.SelectedIndex)

[code]....

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Check If Item Is Listbox Is Already Selected (highlighted)?

Mar 20, 2012

check if item is listbox is already selected (highlighted) vb.netbut this code not work

If listBox1.SelectedItem.ToString = listBox1.Items.Item Then
Return false ?

[code]......

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When Users Select Each Item Another Item Will Be Added To Second Listbox But It Is The First Selected Item

Jul 5, 2010

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

[Code]....

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Check Combobox Item Then Change Labels To Item Selected

Oct 31, 2009

Just started on vb.net

I have a combo box with "yes" and "no" with i select Yes i want the label2 to change the text to "yes" likewise with "no"

I've tried to code it in a logical way as possible but it just doesn't works except for the "wtf" so i think that overall my code is correct but the way i want to retrieve the selected item from combo box is wrong.

Public Class Form1
Dim aa As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As

[Code].....

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Change An Item In A Selected Item Of A Listbox?

Dec 9, 2011

I am trying to change an item in a selected item of a listbox.

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Check If An Item Is Selected?

Oct 18, 2009

Im making something like a save file dialog that saves a file based on the text of a listview1.selected item.How can i check if an item is selected? How can i get its text and subitems?

If ListView1.SelectedItems(0).Selected = True Then
End If

This Returns An Error If No Item Is Selected.

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Check That At Least One RadioButtonList Has An Item Selected?

Feb 28, 2011

I have 20 RadioButtonLists on a page.

I need to create a validation method to ensure that at least one of these RadioButtonLists has an item selected.

What kind of validation would I need to use for this?

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Getting The Tag Of A Selected Listbox Item?

Aug 18, 2010

I have multi select set to false and get this error

InvalidArgument=Value of '0' is not valid for 'index'. Parameter name: index

vb.net
Private Sub MembersList_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MembersList.SelectedIndexChanged
Try

[Code].....

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No Selected Listbox Item

Jan 27, 2009

I have a form with a list box and a button. The list box is filled with text files from a folder. When you click the button whatever file is selected in the list box is then opened and each line of that file is added as an item in a list box on another form.I'm not sure what to code for if something in the first list box is not selected.

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Asp.net - Customvalidator: Check If Radiobuttonlist Contains A Selected Item?

May 17, 2010

I have a radiobuttonlist with two items, Yes or No. The radiobuttonlist control has a customvalidator that needs a servervalidation function and a javascript clientvalidationfunction. Could you help me? The function in this message works but only when i actually have choosen one of the two listitems, when no listitem is selected the validation skips my radiobuttonlist control.

function ValidateRadioButtonList(source, arguments) {
var RBL = document.getElementById(source.controltovalidate);
var radiobuttonlist = RBL.getElementsByTagName("input");
var counter = 0;

[code].....

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Check A Checkbox Of The Selected Item In A Checkedlistbox?

Sep 30, 2011

I want to check a checkbox of the selected item in a checkedlistbox but option strict disallow it. How can I do it without turning it off?

Dim clb As CheckedListBox = DirectCast(sender, CheckedListBox)
clb.SelectedItem.checked = True 'late binding error

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.net - Listbox Selected Item Checking?

Aug 10, 2009

My code follows. I have six items (indices 0-6) and I'm trying to check if one has been selected or not. If not, then messagebox yells at you to select one. If it does, it tells you what you have selected. I'm having a horrible brain fart and contemplated coming here for about 45 minutes as I couldn't get it.

If ListBox1.SelectedItem.ToString <> "" Then
MessageBox.Show("You selected " + ListBox1.SelectedItem.ToString)
Else
MessageBox.Show("Please select an item.")
End If

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C# - Get The Last Selected Item In Multiselect ListBox?

Apr 15, 2009

In .NET there doesn't seem to be a property to find the item just selected in a multi-select listbox; SelectedIndex always shows the first selected item. From memory VB6 had the ListIndex property that changed accordingly... Why remove a useful property ?

Duplicate: How to get the last selected item in multiselect ListBox?

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Cancel Selected Item In Listbox

Jul 15, 2010

I need to cancel the selected item in the listbox if the number of selections exceeded from max number the user has defined. What should I do?

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Delete Selected Item From Listbox?

Nov 19, 2011

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].....

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Deleting Selected Item From A Listbox?

Jun 21, 2010

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].....

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Distracting Selected Item From ListBox?

Apr 23, 2010

have this code here:

Dim decSubTotal As Decimal
Public g_selected As Integer
'dvd titles

[Code].....

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Edit Selected Item In Listbox?

Nov 8, 2007

So, I need to be able to edit an item that has been selected in a listbox. I need to do so with a button click event. Theoretically, I know how to do this, because I know how to add an item, and how to remove one, and how to insert an item at a specific location.

'Dim strinput As String
'Dim Item As Object
'Dim index As Integer = lstList.Items.IndexOf(item)
'strinput = InputBox("Edit This Item")
'lstList.Items.RemoveAt(lstList.SelectedItem)
'lstList.Items.Insert(index, strinput)

however, this does not work at all. what am I doing wrong??

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How To Get The ID Number Of A Selected Item In Listbox

Dec 13, 2011

I am trying to use a listbox to hold categories from one table in a database and by clicking on the categories in the listbox it will display data from another table in the database that is linked to those categories. One table has a field called ID and the other has categoryID and categoryID is linked to ID so it displays the numbers from ID.I am using this:

daSamples.SelectCommand.CommandText = "SELECT * FROM tblSamples WHERE tblSamples.categoryid =" & (lstCategory.SelectedIndex + 1)
daSamples.Fill(dsSamples, "tblSamples")

Currently, however with this if you delete a category from the table with ID in it then it changes the values of the selectedindex in the listbox which messes up the data that gets displayed. How can i change this so instead of using the selectedindex from the listbox, it takes the ID from the selectedindex?

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How To Get Webpage Selected Item In ListBox

Mar 23, 2011

Im trying to get a webpages selected item in a listbox. I was able to get what I could from the textboxes using the htmlelementcollection, but when I try to get what is inside a listbox nothing comes up.

Code:
Dim theElementSelection As HtmlElementCollection = Form1.wbCHCTrac.document.GetElementsByTagName("Option")
For Each currentElement as HtmlElement in theElementCollection
Dim controlName As String = currentElement.GetAttribute("Value").ToString
if controlName = "Selected" then
controlname = currentElement.GetAttribute("Value").ToString
[Code] .....

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Listbox Selected Item Msgbox

Apr 21, 2009

I know this is simple but hard for me xD. Opening a msgbox when a listbox item is clicked. [code] It MUST contain the msgbox.

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Remove Selected Item From Listbox 3?

Aug 18, 2010

I would like it when button 3 is clicked it will remove the selected item from listbox 3.

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Remove Selected Item In Listbox?

Mar 11, 2009

I want to remove an item in a listbox1 by clicking on it with the mouse to highlight it and then clicking the remove button this is the code i have for button1_click

ListBox1.SelectedItem.delete(ListBox1.SelectedItem)

that doesn't do anything.

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Rename Selected Item In A Listbox?

May 26, 2009

I've got a listbox that when you select an Item in the contextmenustrip for that listbox to "Rename" the item, an inputbox pops up and prompts you insert a new name, how do I change the selected Items text? [code]

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VS 2008 Selected Item In An Listbox?

Aug 19, 2009

Is there a way to see if an item is selected in a listbox?

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VS 2010 - How To Get Value Of Selected Item Out Of ListBox

Oct 14, 2011

I've bound a listbox to a database; how do I get the value of the selected item out as a string? Something like
temp = listbox1.SelectedValue.ToString()
Only returns
"System.Data.DataRowView"
rather than the actual value.

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VS 2010 Listbox Getting Selected Item?

Oct 9, 2010

i would like to take the selected item in the listbox, and have the text of the item as a string. how can i do this?

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Delete Row Based On Listbox Selected Item?

Jul 3, 2009

How can I delete a row from an SQL database based on what item is selected in a listbox?

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Display Selected ListBox Item In PictureBox1

Jun 30, 2010

I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.I have tried many codes but none of them worked.The files in the listbox are listed like this: C:\Documents and Settings\My pictures\ Image01.JPG.

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Display The Selected ListBox Item In The PictureBox1?

Jun 21, 2010

I'm making a program that can search for all .JPG files and display them in a ListBox. Now I want it to display the selected ListBox Item in the PictureBox1.

The files in the listbox are listed like this :C:Documents and SettingsMy picturesImage01.JPG

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Draw Rectangle Around ListBox Selected Item?

Jul 29, 2009

how can I draw a rectangle around the listbox's selected item? Something like the default windows focus rectangle.

I know I have to draw a custom ListBox, I have already done everything but this... This is what I'm trying, but it doesn't work

vb.net
If ColoredListBox.SelectedItem <> Nothing Then
Dim pos As Point = Me.PointToClient(Control.MousePosition)
e.Graphics.DrawRectangle(Pens.Red, pos.X, pos.Y, 259, 12)
End If

Is it possible to get the bounds of the selected item?

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For Selected Item Of Listbox Input Value In Textbox

Feb 26, 2010

I am using 3 textbox and one listbox. I am successfully retrieve the data into listbox i want that item selected in a listbox enter the data by textbox once the value input that the selected item of a listbox will change the back color of selected item only.

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IDE :: Place Selected Item From Listbox In Top Position?

May 5, 2011

I want to place the selected item from a listbox at the top (or second) position in the listbox display.I can't find a stylebit for this.

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Listbox Selected Item Color Change?

Feb 26, 2010

I am inserting the data through textbox of the selected item of the list box I want the when the user will input the data into textbox and then pressing the insert button the the selected item of list box (selected item only color change) color change white into blue or red.

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ListBox Selected Item MsgBox Popup

Jan 22, 2009

I've set up a listbox on my program so that a user opens a folder browser dialog, the name of that folder is then added on a listbox as that folders name, now what I am wanting to do with the listbox is, if an Item is selected then a button is pushed a msgbox pops up with the item they selected.

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Scroll An ASP.Net ListBox Automatically To First Selected Item?

Nov 17, 2010

Is there an easy way to scroll an ASP.Net ListBox automatically to the first selected Item?[code]...

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Selected Listbox Item To Trackbar Values?

Mar 9, 2010

I have a little problem. Basicly, I have a ListBox, TrackBar, TextBox and 2 Buttons. What I want now is that:

1. If user clicks on Button1, the program will add text from TextBox to ListBox (I know code for that one).

2. When user clicks on ListBox item, ListBox item selected, and then clicks on Button2, program will set the value of SelectedItem to TrackBar. Here's an example:

User writes "Value is 50." in TextBox, clicks on Button1 and program adds "Value is 50." to ListBox. Now user selects ListBoxItem and  clicks on Button2. Program sets TrackBar value to 50.

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VS 2005 ListBox Selected Item Backcolor

Jul 30, 2010

I have refereed the Colored List Box codebank entry by tassa. Using this i face a problem, whenever the listbox looses the focus, the selected item backcolor is changed to white.How should i make the listbox to keep the backcolor.

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Code Fails To Return Selected Item In A ListBox?

Jan 14, 2012

In my code I have to create a listbox and a form as its container. After adding a few items through code I am not able to make code return a Selected Item when I select the item manually; it always returns the las item added. However ther is no such problem with returning the Selected Index.

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Forms :: Compare The Selected Item Of The Listbox With The Database?

Jun 25, 2011

how compare the selected item of the listbox with the database and dispaly data again in the textbox of front end

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GetDirectories - Pass The Listbox Selected Item To The New Path

Feb 15, 2011

I have this code that populates a Listbox. (works fine). [Code] Once the Listbox is populated I want to select from it and re-populate the same Listbox with new info. [Code] Only problem is I can not figure out how to pass the listbox selected item to the new path. The "&" is not allowed in my example (code error on my part).

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Opening Text Files When Listbox Item Is Selected

Aug 4, 2009

a dialogue box to have the user open a file they wish. I'm trying to open a specific file when a listbox item is selected and I have that down but I'm running into the problem of needing to have "" in the display which is impossible from what I can tell in the code. I just need to know what goes in the quotes which will open the file. Also lets say the text file was 'supportdoc1.rtf' and was located in a folder inside of the program folder called 'SupportDocuments' would the path be "SupportDocumentssupportdoc1.rtf" [Code]

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PositionChanged Does Not Fire For Listbox When The 1st Item In The List Is Selected?

Feb 9, 2011

My listbox is bound to a datatable. The listbox is initially set to not show any data using selectedindex = -1.I have a second listbox that populates based upon the entry selected in listbox1. I use the Bindingsource PositionChanged event to populate the 2nd listbox.My problem is when the 1st entry in the listbox is selected the PositionChanged event does not fire, because the row selected is the default current position of the bindingsource. Can the Bindingsource be set to a "Null" position, I tried Position = -1 and that has no effect.

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Reading A Selected Item In Listbox With Members Of AD-group

Sep 12, 2010

I habe a little problem with my code. After 4 years, I must now expand and adapt an old program with new features for Windows 7.I use the great snippet from Chris to query the members of a active directory group.Now I want to use a selected item from the Listbox for a further search, but it doesn't work. I check the selction with a Textbox, but I get an error message:"Invalid Conversion from DirectoryEntry to String".[code]Until now I was able to read the selected items from the listbox in a Textbox or a query.

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