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
Having some issue trying to programmatically check items in a CheckedListBox.What i am trying to achieve:
1. Pull Staffnames from database
2. Separate each staff member via delimiter
3. checked = true for each item in StaffCHKlist where staffnames = existing StaffChKlist item
i have had a few goes, but cant seem to achieve, this is where i am currently at:
Dim sl As String = ds.Tables("Consignment").Rows(0).Item("StaffName")
Dim tokens As String()
tokens = sl.Split(",")
[code]....
which errors with:
"List that this enumerator is bound to has been modified. An enumerator can only be used if the list does not change."
I have been trying to understand, would programmatically checking an item in a checkedlistbox be classified as list change?
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].....
i need a little bit of help with the checkedlistbox. What i want to do is add a phrase or a reminder and if i check the checkbox of that item, i want the text to be strikeout (the text with a line in the middle) and when the form closes i want it be removed from the checkedlistbox.
View 2 RepliesMy form contains a combobox which contains several usernames which are bound to my database.I've added a checkbox to the form which will be used to select the default username from the list.
View 8 RepliesI have a checkbox list which is filled with entries from my database on page load. I need to update an entry in my database when a item is checked and when an item is unchecked. Right now I am doing the following:
<asp:CheckBoxList id="check1" AutoPostBack="True" TextAlign="Right" OnSelectedIndexChanged="Check" runat="server">
</asp:CheckBoxList>
And the function:
Sub Check(ByVal sender As Object, ByVal e As EventArgs)
Dim sql As String
If check1.SelectedItem.Selected = True Then[code]....
The error is: "Object reference not set to an instance of an object." Is there a better way to check if a list item is checked or unchecked?
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.
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?
How to check whether the listbox contain selected item or not in vb.net.
View 8 RepliesIv 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]....
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].....
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]......
I have CheckedListBox, now i want to put image from the ImageList next to the every checkbox.I try to do that with this:
CheckedListBox1.Items.Add(ImageList1.Images(0))
But with this I get only checkbox with text System.Drawing.Bitmap!What I am doing wrong, I and how i can put image next to the checkbox?
how to check and uncheck all asp.net checkbox on single checkbox check ?I have 5 asp.net checkbox on webform i want when 1 single checkbox checked then all checkbox will be cchecked and if checkbox is unchecked then all checkb ox will be unchecked ..
View 2 RepliesIve got a CheckedListBox with a list of 10 words (1 for each row). Ive then got a string of 10 numbers (0110100110). What I want to do is loop through the string, and if the number is a 1, set the corresponding checkbox to true (checked), and if it is a 0, set it to false (unchecked).For example, take the fourth number in the string, 0, this means it would set the CheckBox in the fourth row of the CheckedListBox to true.
View 4 RepliesIn 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]....
I am trying to use a checkedlistbox to tell how many of the items are selected. I can figure it out when I click a button. What I would like to happen is that when I check or uncheck the box I would like it to oupdate. Not wait until the index is changed. It would be nice if the checkedlistbox would throw an event when the spacebar is used to check and uncheck?
View 1 RepliesIs there a Tag for an Item in the CheckedListBox? Or something similar? I would like to be able to store and ID associated with the item that I'm displaying.
View 3 RepliesI've wondered if i can make it so when i click on a checkbox you may not beable to check another. And i do not want to use radio buttons
View 9 RepliesIm using a CheckedListBox to delete files the user selects. however I get an error: Index was outside the bounds of the array
Code Private Sub btn_Delete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Delete.Click
[Code]...
1.) I have a CheckedListBox, ListBox, Button, and ComboBox on a form. There is two ways users add items to the CheckedListBox listed below.
A.) The user will select one item in the ListBox and click the Button and that selected item is added to the CheckedListBox (see code below).
Private Sub Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button.Click
' ensure searched analytes checked listbox always contains (Select All) at the top if analytes exist in the list
If Me.CheckedListBox.Items.Count = 0 Then Me.CheckedListBox.Items.Add("(Select All)", True)
[code]....
I have an application that uses a treeview and a checkedlistbox to allow a user to navigate and enable/disable printers on their computer. Everything works great.One of the program requirements is that the user interface must visually indicate which printer is the users default. The obvious best way to do this is by changing the font of the item in the listbox that matches the users default printer. From my research, it seems that I will have to subclass the checklistbox and add the drawmode property to the new control. I've got no idea how to do this with a checkbox and make it actually work!
View 7 RepliesWorking the first time with a CheckedListBox.
Question: is it possible to disable an item of the box so you can't change the value of the checkbox.
Given a CheckedListBox instance, how can I accomplish that a maximum of one item can remained checked?
View 3 RepliesGiven a CheckedListBox instance, how can I accomplish that a maximum of one item can remained checked?
View 1 Repliessending message on selected items only on checkedlistbox?
[URL]
Example:I have 2 items on checkedlistbox(BccFeild).but I only want to send the email on the second item.Here's my Code so far..
Private Sub interval_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles interval.Tick
Dim BccLine As String
For index As Integer = 0 To BccField.Items.Count - 1
[code]....
Code Result: Even 1 only of checkedlistbox(BccFeild) is selected. Both items still receiving an email.
for each item as checkbox in lstCheckbox.items
if item.name.startswith("blah") then
item.checked = true
[code].....
how do i add columns to a listbox??
And Checkedlistbox add and edit more than 1 data per item. So if you take a look at Cheat engine it got 3 data per row. 1: the checkbox, 2: the item name and 3 the value i want to change if i doubleclick (all this in same row)
So if you take a look at A cheat engine Video at you tube you can see the checked listbox that you can freeze things and change values so more thann 1 data.
I got this so far but I cant get it to the next item and stop, then when the progressbar reaches 100% go to the next....
'Declare a switch variable
Dim startAuto As Boolean = False
'SaveButton[code......
I wanted to put a checkedlistbox in a groupbox with just one item showing and in the mouse enter event show more items by making the height of the checkedlistbox bigger. The problem is, if it gets to a certain height, it disapears at the bottom of the groupbox because thats its parent.
Is there a way of it showing beyond the boundaries of the groupbox ?