so im dynamically populating a checkbox list. I have confirmed that my text and values are correct for each checkbox but when I check a few and click my event button when I loop through the items they are all set to select=false...
Dim resource As ListItem
Dim SelectedHashTable As New Hashtable
For Each resource In chkResources.Items
[code].....
I 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?
I've got a form with parent-child setup. The parent displays name and other demographic info.The child displays multiple addresses, one row at a time. There can only be one primary address for a name and this is designated by a checkbox at the top of the child form.If the user wants to change the primary address to another address,then they find the other address and click on the checkbox.The form checks the other addresses and if one is found that is designated as primary,the user is warned that one already exists and prompts them to change it.
So for example, a name has 2 addresses, the 2nd being the primary address.The user wants to change the 1st address to be primary.They click on the Primary Address checkbox for the 1st address.A warning displays that there is already an address listed as primary.The user then answers the prompt to change the 1st address to the primary address.The checkbox for the 2nd address will be unchecked and the checkbox will be checked for the 1st address.My problem is getting the checkbox unchecked for the 2nd address.If I close the form and reopen, then the checkbox is unchecked.How do I refresh the checkbox for the 2nd address?Here is the code I'm using to find if an address has already been marked as primary:[code]......
[URL]
how to make a filter that only show the items that checked and unchecked don't show in checklistbox
I want to create a solid checkbox that is checked by default, and is not clickable. If you click it, nothing will happen . how to do this?
View 2 RepliesI have a very stubborn check box . Let me tell you its story :There is Form1 with a button leading to Form2 . On Form2 there is located that stubborn check box I was telling you about . That check box has code in its CheckedChange event and accordingly to its Checked condition , it enables or disables some text boxes .Well , the first time Form2 is shown , that check box works fine : when I check it it enambles the text boxes and when I uncheck it , it disables those text boxes .Then , I press the button to return to Form1 . If needed , the code in the button is :Form1.ShowMe.CloseMy adventure starts when I show again Form2 ... This time the check box is acting weirdly . No matter if I check it or I uncheck it , it always disables the text boxes , as if it is constantly unchecked ! I can see it changing its checked state whenever I click on it , but it always runs the code to disable the text boxes.
I even used some break points in the code and found out that indeed it is the code that disables the text boxes that is called every time , no matter if the check box is checked or unchecked .I don't thing this has anything to do with the fact that this event is called by all the 4 check boxes on the form . After all , it is always the 1st check box that causes the problem (I can see it when moving the cursor over the genericindex variable) .
I am using the following code for a checkbox, if checked it should print the text defined, unchceked, it clears the items in the ricktextbox. My problem is it prints fine (lets say it prints two lines) as defined, when I uncheck, it clears the text in rich text box, but when I check again, the text appears in the richtext box, but displayed from 4th line. I need to restart from the beginning/ or at least from the next available line. I cant use clear() since it erase all the contents as i have another 3 checkbox items placed.
If CheckBox1.Checked Then
richtextbox.SelectionColor() = Color.Blue
richtextbox.AppendText("Urgent:")
richtextbox.AppendText(CheckBox1.Text.ToString + vbNewLine)
Else
richtextbox.Refresh()
End If
I have a datagridview with 3 checkboxes, Yes, No and InV.At runtime, I want the user when he checks one checkbox the other two are unchecked by default. Therefore, at whatever one time ONLY one checkbox will be checked.
[Code]...
I'm trying to set my software up so that when I check the checkbox for winRAR to be installed, it'll pop up a new window asking if I want to install the 32 bit version or the 64 bit version. I have no problem getting the window to show up but than if I try to exit out of the window and than uncheck the box (in case it was accidentally checked) it'll just open the window again. I am thinking I have to tell vb that when I uncheck the box it shouldn't do anything.
Here's my code.
(I know that the Nothing under the Me.chk_rar.Checked = False doesn't work but I left that blank once and it just opened a bunch of windows and crashed my system. I know it says "E:Music" right now but I just pointed it there so that there was something there normally it'll point to the other window. If I need to created a new Form for every little window that I have for instance the little window that I want to pop up, do I need to create a new form just for that little window to ask which architecture is needed and than giving the options for 32 bit or 64 bit.
Private Sub chk_rar_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chk_rar.CheckedChanged
Me.chk_rar.Checked = True
Process.Start("E:Music")
Me.chk_rar.Checked = False
Nothing
End Sub
I use a textbox for input unless one of the checkboxes is checked, then the textbox needs to have a value of 1 which I have working.What I need is a way to lock the textbox if the checkbox is check and allow data if it is unchecked.[code]
View 2 RepliesI have an invoice that lists several items that one person has ordered. I want to take this invoice and every time I check the item it removes one of those from another list i created called item details. I added items to this list using the item collection in the listbox.. I have invoice one that has a pink sock ordered. when i clicked this box next to it I want my total pink socks of 12 to move down to 11... the detail page and the invoice are two separate pages.
View 1 RepliesCould not find this through Google or in SO questions.I have a checkbox listbox on my form. I want to filter my List by the list of selected Ids from that listbox that are checked, in SQL I would have done this like "Where TypeId In (1, 4, 5, 7)"... how do I do that in LINQ?
I feel like I am missing a really obvious answer, but cannot get it.
For argument sake... here is the what I have for sample data:
In Colors (List<of currentColors>)
ID, Name, TypeId
1, Red, 1
2, Blue, 1
3, Green, 2
4, Pink, 3
Selected Types 2 and 3 in CheckboxList: filteredColors
[Code]...
In VS 2008, VB.Net, I am successful connecting to a local SQL Server (version 8) and seeing all tables/views/procedures in Server Explorer. The local OS is Win XP Pro SP3. I created an ODBC data source to a remote SQL server (also version 8) with a database of the same structure as the local one. The connection tests out ok. The remote computer runs Windows Server 2000 SP4. In the VS 2008 Server Explorer I add this ODBC source. When I click on the plus-signs to expand items, neither the tables nor the views show anything, whereas the full list of procedures appears. Is it the old SQL Server version? Is it the old Server OS version? Something else alltogether?
View 2 RepliesIn VS 2008, VB.Net, I am successful connecting to a local SQL Server and seeing all tables/views/procedures.I created an ODBC data source to a remote SQL server with a database of the same structure as the local one.The connection tests out ok. In the VS 2008 Server Explorer I add this source. When I click on the plus-signs to expand items, neither the tables nor the views show anything, whereas the full list of procedures appears.How can I see the lists of tables and views in Server Explorer for an ODBC source?
View 1 RepliesI'm trying to get my items to show up in my shopping card but nothing shows up
View 4 RepliesI am a student in a Visual Basic class. We were working on a project using the Count property of the ListBox. I'm using Visual Studio Professional Edition 2008. When I enter a line in the editor that looks something like this: If lstResults.Items.Co
IntelliSense will generate a little balloon that says 'Public ReadOnly Property Count() I saw the () after Count and thought that meant that was the proper way to code it. So that is what I did. The code seems to work with ...Count() or just ...Count. I was wondering if there is some reason why the parens show up after the description of the Property in IntelliSense.
listbox conrol shows only 65000 items on vista
View 3 Repliesi have simple application which contain one listbox. i am loading item in listbox from one file. around 130000 items in it. when i run this application on xp computer i am able to scroll down all item perfectly from first to end. But when i run this application on vista machine, it only shows 50% of item if i scroll down with that bar on right on listbox. but when i reach end of list (which is item number 65000) and than use "Down arrow " of listbox it move to item n umber 65001 and later and scroll bar move again center of listbox. After i move to record number 65001 and more by clicking down arrow and use scroll bar at center to move further down to end it again shows 65000 item. But in windows xp it shows all item perfectly.
View 4 RepliesHow can I make a progress bar that shows when I acces some items on a listbox. It fills only when I click on listbox items, and then gets empty imediately.
View 2 RepliesHow can I make a progress bar that shows when I access some items on a listbox. It fills only when I click on listbox items, and then gets empty immediately.
View 4 RepliesI am a first time poster and fairly new to using VB 2008.I was having some trouble with writing a program that shows the sales tax of items (i.e cars, food, etc).
[code]...
The buttons are in the middle and the four text boxes are marked with brackets and underscores.I know how to code the "clear" and "exit" button but I am having some difficulties with the calculate button.
Ive got 2 List boxes 1 Shows Processes other one is for Storage. Anyway that's not important. Im trying to Kill all the Processes wat are stored in Listbox 2. I had to add .exe at List for Listbox 2 But still not working ? The problem is its not removing the File names that are stored
ProgressBar1.Increment(1)
Process.EnterDebugMode()
If ProgressBar1.Value = ProgressBar1.Maximum Then
[CODE]...
Im trying to add a variable that shows amount of tax deducted in a list box among other output variables. If anyone can help I would like to know how to code the lstResults.Items.Add("-$ " & Tax & " Tax") bracket to display the amount of tax deducted from the total salary wages.
Public Class Form1
'Decalirs Variables
Dim Hours As Integer
Dim Overtime As Integer
[code]....
I want to make simple photo gallary . First thing I have a combo box contain several folder whene I choiec a a certain folder, it should shows all the pic name that the selected folder contain. Whene I click in certain pic in the listbox , the picture box should show the selected pic.
[Code]...
is it possible to get a list of checkbox items from the database?
View 8 RepliesI need to create a program that when I click a button it shows a sentence (took it from a list) random. But after it have to delete the sentence from the list 'cause we dont want to read it again I don't know so much about VB so I'd like some help!
View 25 Repliesi just need to select from multiple checkboxes, this checkbox contains days from Monday to Saturday. Here is the idea on what will happen if I select Multiple days, it will save on a field on my database with colon(;)
View 6 RepliesI have created about six invoices. Listed on these invoices are checkboxes that contain items that are listed in a listviewbox on another form. I want to be able to click the checkboxes next to these items and the inventory list decrease in amount... ill show you how i created my boxes and then my coding for my checkboxes...
This is how I added items to the listview
Private Sub ItemDetails2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim items As New ListViewItem
[Code].....
I'm having to write a reporting application that gets information from some Interbase servers and it also has to work on Vista as well as XP, I'm using to connect Borlands Data Provider.[code]My Issue is that debugging on my xp Machine the dataset gets filled, debugging on my vista box it fails ("Interbase provider initialization failed"), my initial thought was that this could be UAC related but I've compiled the application and 'ran as admin' and still same issue. (by the way it failes on the line Dim da as BdpDataAdapter...)
View 1 RepliesI'm looping all the properties in an object via reflection:
For Each p As PropertyInfo In values.[GetType]().GetProperties()
If p.CanRead Then
'Do stuff
End If
Next
how to determine whether the property in question is a generic List(Of T)? If it is I need to loop the list itself.
I've experimented with GetType and TypeOf but have not managed to get anything working.
To clarify, I want to keep this generic. I do not want to specify the type of T, I need to loop the list items and call the ToString method on each item. T could be one of a number of different types (application specific reference types). Is it possible to do this without specifying types?
(VB.NET 2005 with .Net 2.0)