How do I disable buttons while there are less than 2 items in a listbox? I can't figure out how to do it. I'm a newbie in Visual Basic(programming at all)
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I need to extend a combobox to disable some listitems (i.e splits - "----------"). I reckon some APIs will be involved, and it could get complicated. That'll not put me off though. If anyone with usefull info on the subject could post it,
View 11 RepliesAs far as I know, there is no way to grey out/disable specific items in the ListBox control? I want to make a list of surveys that need to be answered, but grey out/disable those that the user has already answered.Or is there some way to do it with ListBox?
View 1 RepliesI can't seem to figure out how to use databindings to enable/disable a button when a listbox contains 0/1+ items?
Button1.DataBindings.Add("Enabled", ListBox1, "Items.Count")
Button1.DataBindings.Add("Enabled", ListBox1.Items, "Count")
Result = ArgumentException: Cannot bind to the property or column Count on the DataSource. Parameter name: dataMember
Button1.DataBindings.Add("Enabled", TextBox1, "Text.Length") ' This works?
any simple coding that uses 2 buttons, allowing the items in listbox to be moved either up or down?I have been finding complex codes rather than simple ones. can someone help me on this?
View 1 RepliesI have 2 projects where I have to assign certain items to buttons, and I am getting the following error message:
Error1'videotype1' is not declared. It may be inaccessible due to its protection level.C:UserschrisAppDataLocalTemporary Projectsvideo bonanza 1chris's video store.vb49video bonanza 1
Here is the
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
videotype1.text = "aisle 1"
End Sub
I am using VB.NET (version 2008). I have two types of items populating in a listbox (checked listbox). For example: lets say one is type "A" and other is "Type B". Their names maybe same so if the user sees those items in listbox then he won;t be able to determine their type until he click on them and checks out its properties. I wanted that I add each item to listbox and colour them so that blue for example means type "A" is there and red means the other. So this way I will be able to know at a glance that how many item of what type is present. I guess it may not be possible to do that in a standard checkedlistbox. I am also using component factory's krypton controls which enhance the gui of an application. But I dunno if I can progress using that.
View 5 RepliesI've been working on a little project recently which is a music player (unoriginal I know, but I'm just learning ). Basically, I want the items that have been added into the listbox to be remembered for the next time the application is opened so that you don't have to re-add the items. The items show up like this (because they are added from my documents): C:UsersEthanDocumentsMusicCage The Elephant - Aint No Rest For the Wicked.mp3?
View 4 Repliesi am trying to make a program that adds up all of the numbers in a list box and displays them in a text box, how do i do it?t
View 2 RepliesI am using a listbox that is filled with a list of items from Database. When I am deleting an item from the listbox it is has to be deleted from Database, and that is all working fine.The problem is, even after deleting the item from the listbox, it is showing in the listbox, I have to close and restart the app to get the deleted item off from the listbox.
Is there any way to remove an item from listbox at the same time? I don't want to use timer to refresh is there any other way to refresh the listbox items???
I am making a program, and I have a listbox which will contain A big list of file Paths. I have two buttons Add and remove. Adding items is easy and I have done this. But removing items is the hard part because the listbox is multiselect. I have tried so many attempts It wouldn't be useful to post code. But the closest attempt is
[Code]...
I am wondering how i would go about taking multiple items (randomly) from a listbox and displaying them in a label!Now this listbox wouldn't have to be visible, maybe i can do it without it even being a listbox?I want to have 25 labels and each one recalls a random value from the list (doesnt matter about being unique and the list will contain about 20-30 items)Im just a bit stumped on how to do it as ive done some looking into it but most people are asking for randomized numbers or unique items where as i need randomized items from a list which aren't unique!
View 2 RepliesBasically I need to remove Listbox1 items that are less then average, but its giving me:
System.ArgumentOutOfRangeException was unhandled
Message=InvalidArgument=Value of '9' is not valid for 'index'. [Code]
I have a listbox control on my form that has SelectionMode as MultiSimple so I can select more than one item with my mouse. I added a contextMenuStrip to my form and added it to my listbox. I'd like the user to be able to select a few items in the listbox and when they right click > Copy it would copy the contents of the selected items to the Clipboard.
[Code]...
I have this code to add Items to a Listbox:
Private Structure Bets
Public id As Long
Public name As String
Public size As Double
[code]....
I googled to find how I can change the items forecolor or backcolor. I want the items containing "Unmatched" to be one color and "Matched" another.
basically i had this problem before which i fixed with this code!
'REMOVE TIME
If ListBox1.SelectedIndex <> -1 Then
Dim Box As MsgBoxResult = MsgBox("Are you sure you want to remove this time?", MsgBoxStyle.YesNo)
[Code]....
It worked perfectly, all ive done to my code since is change the way the listboc is loaded / saved, it now comes from a .txt in My Documents rather than the C drive.
It now only deleted the top value of the group selected int he listbox and not all of them as it did before.
I want to get items into the ListBox from Database on FormLoad.
My code is:
database
Private Sub Models_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim qry As String
[Code]....
I am already having three models in database that has to be loaded in ListBox on formload.
How would you sort the items only after the line but in the same listbox?
View 3 Replieshow to write the items in the right listbox to a .txt file using StreamWriter. I need the output line to resemble:
"set sv_mapRotation map mp_abandon map mp_afghan map mp_boneyard map mp_brecourt map mp_checkpoint map mp_complex map mp_crash" The order should be just like it is in the right listbox.
This is the code that I have set up to begin this:
myWriter.WriteLine("set sv_mapRotation" + " " + """" + """")
So I'm using the following code to add items into my list box, and I'm trying to get it to check the contents of the list box as well.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
If ListBox2.Items.Contains(TextBox3.Text) Then
MsgBox("Character already exists!")
Else
ListBox2.Items.Add(New LBnfo With {.v4 = RadioButton6.Checked,
[Code] .....
But when I try to compare the two:
If ListBox2.Items.Contains(TextBox3.Text) Then
MsgBox("Character already exists!")
Else
It doesn't show the message box even when the character actually does exist. I believe the problem is that I never do add the item really. I just use, "Return Me.character," which is assigned the value of Textbox3. So I just need to figure out how to check Me.character before returning it.
Ik heb met behulp van het volgende script de gegevens uit mijn listbox geexporteerd naar een ini file:
Private Sub saveButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles saveButton.Click
If SaveFileDialog1.ShowDialog = DialogResult.OK Then
[code].....
I am using this code for save the items into a text file:[code]I want to save the items without blank lines like
-item1
-item2
-item3
How would one go about checking a listbox's items for duplicates? Basically I need to write a program that displays the teams from a text file provided by my instructor, in alphabetical order. I can do that, but what I can't figure out is how to prevent the For loop from adding a duplicate team. What I'm envisioning is:
If teams(i).name is not in lstTeams.Items Then
lstTeams.Items.Add(teams(i).name)
End If
I have a program that compiles and works so far, except for the above problem and my alphabetical order (which I can probably figure out on my own:
Public Class danbrockteams
Structure team
Dim name As String
[Code]....
This works except that my listbox is filled with the team every player is in rather than just listing all possible teams. Not exactly looking for someone to just give me the answer, as I understand things best when figuring them out on my own, so I suppose a hint is what I'm really after.
I have made a little application for me and my friend to be able to chat with eachother, but now we have some unclear strings as you can see on the image below:
I would like to change for example the username or time date to a color or make it bold, could anyone tell me how to change ONLY that and not everything? I'd love to have such a thing as it makes the whole application way 'clearer'.
I have a list of links and need to check some data in it.
i placed all the list in a listbox and each item is verified for some result
now i want to see how many items are processed and how many are still need to process
Example: in a label it must display total count of items and items completed and it must change once a item is finished.
over view of my code is:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
For Each item In ListBox2.Items
[Code]....
Once an item is finished label must change the count.
I am trying to Disable the "Move First", "Move Previous", etc in a Navigator Bar. I want them Visable, just disabled. In other words, I want them to show (grayed out), just not clickable. In the Move First properties I set Enable = False and Visable = True. It looks grayed out in the form design but when I run it, the arrow is still clickable. If I make Visable = False, the button does not show up in the app.
View 2 RepliesI am using Vb 2008, and im trying 2 enable a copy button thats in a toolbar until there is text selected in my rich text box. (normal state of the button is disabled.)
my code is below
If Editor.SelectionLength > 1 Then
CopyToolStripMenuItem.Enabled = True
End If
End Sub
i have created dynamic buttons at runtime and i would like to disable them when a user clicks on a form button.This is the code i have for that button:
Dim intXX As Integer = 0
Do Until intXX = intX
userAvatar(intXX).Enabled = False
intXX = intXX + 1
Loop
The buttonNames is an array of all populated button names created at runtime. However, trying the .enabled = false at the end of that does not work. What other ways are there to do that with buttons created at runtime?
[Code]...
How can I disable buttons on some rows in an unbound datagridview, or at least make it appear that it isn't enabled? The enabled property of the cell doesn't exist, and the visible property is read only.
View 2 RepliesSo i'm working on this web application which is pizza order application form in which user selects size of the pizza and toppings.I've 4 sizes pizza but I can check more than one radio buttons at a time.and the other problem is that I've like 6 choices of toppings which worth 99C each. But If I select more than one checkbox, then total adds up 99C only once.[code]
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