Im having a hardtime figuring What went wrong ,My program Has 3 buttons (Bread,Coffe,Pasta) and a panel, each buttons show a different form,
I currently set the Panel's autoscroll to true
MenuPanel.AutoScroll = True
The Coffee,bread and pasta button function is
Private Sub btnCoffee_Click(sender As Object, e As EventArgs) Handles btnCoffee.Click
MenuPanel.Controls.Clear()
CoffeeForm.TopLevel = False
CoffeeForm.WindowState = FormWindowState.Maximized
CoffeeForm.Visible = True
MenuPanel.Controls.Add(CoffeeForm)
CoffeeForm.Show()
End Sub
Private Sub btnBread_Click(sender As Object, e As EventArgs) Handles btnBread.Click
MenuPanel.Controls.Clear()
BreadForm.TopLevel = False
BreadForm.WindowState = FormWindowState.Maximized
BreadForm.Visible = True
MenuPanel.Controls.Add(BreadForm)
BreadForm.Show()
End Sub
Private Sub btnPasta_Click(sender As Object, e As EventArgs) Handles btnPasta.Click
MenuPanel.Controls.Clear()
PastaForm.TopLevel = False
PastaForm.WindowState = FormWindowState.Maximized
PastaForm.Visible = True
MenuPanel.Controls.Add(PastaForm)
PastaForm.Show()
End Sub
The autoscroll works for the first time and after Some clicks on the The buttons (Maybe 4-5 clicks and scrolled with Mousewheel)
the Vertical Scrollbar disappear from the panel
what went wrong?
I am currently using vb.net 2019
1:
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I have an application that I'm developing for a school project. This is what the application looks like
Essentially whenever one of the CheckBoxes is checked, a TextBox.Visible property is changed to true and is supposed to appear underneath the checkbox. You can have all three of them checked (or any combination checked) if you like, as long as when you uncheck it the TextBox disappears and the CheckBox appears empty/unchecked.
I've gotten to the point where I can make the TextBoxes appear and disappear but the TextBoxes are never empty. There's always a black square there that looks like this
Those black squares don't go away and I'm not sure exactly what the problem is. The TextBox also only appears when the CheckBox has that square as opposed to an actual check which is what is required. I have used a combination of If...ElseIf statements and Select Cases, which haven't done it. I've tried a few different events like CheckChanged and Click.
This is the code that I currently use that allows me to toggle the boxes.
Private Sub chkBox_Click(sender As Object, e As EventArgs) Handles chkBox.Click
If chkBox.Checked = False Then
txtBox.Visible = False
txtBox.Text = ""
Else
txtBox.Visible = True
End If
chkBox.Checked = True
End Sub
Private Sub chkLawn_Click(sender As Object, e As EventArgs) Handles chkLawn.Click
If chkLawn.Checked = False Then
txtLawn.Visible = False
txtLawn.Text = ""
Else
txtLawn.Visible = True
End If
chkLawn.Checked = True
End Sub
Private Sub chkPav_Click(sender As Object, e As EventArgs) Handles chkPav.Click
If chkPav.Checked = False Then
txtPav.Visible = False
txtPav.Text = ""
Else
txtPav.Visible = True
End If
chkPav.Checked = True
End Sub
If you guys can think of a solution or could point me in the right direction I would appreciate that.
I'd recommend this in the form load to setup a relationship between the checkboxes and the textboxes:
chkBox.Tag = txtBox
chkLawn.Tag = txtLawn
chkPav.Tag = txtPav
Then one handler:
Private Sub chkBox_Click(sender As Object, e As EventArgs) Handles chkBox.Click, chkPav.Click, chkLawn.Click
CType(sender.Tag, TextBox).Visible = CType(sender, Checkbox).Checked
End Sub
Try to remove the chkPav.Checked = True, chkLawn.Checked = True and chkBox.Checked = True in your .click events.
Also, i would recommand to use the "CheckStateChanged" vb.net event.
This will handle all your CheckBox.CheckChanged events. It finds the TextBox based on the name of the CheckBox. So just name them the same as you have (i.e. chkA and txtA).
Private textBoxPrefix As String = "txt"
Private checkBoxPrefix As String = "chk"
Private Sub chk_CheckedChanged(sender As Object, e As EventArgs) Handles chkBox.CheckedChanged, chkLawn.CheckedChanged, chkPav.CheckedChanged
Dim chk = CType(sender, CheckBox)
Dim suffix = chk.Name.Substring(checkBoxPrefix.Length)
Dim txt = Me.Controls().Find(textBoxPrefix & suffix, True).Single()
txt.Visible = chk.Checked
txt.Text = If(chk.Checked, "", txt.Text)
End Sub
Making it a little more scaleable, add handlers to all CheckBoxes in the GroupBox in Form_Load programmatically. (remove Handles chkBox.CheckedChanged, chkLawn.CheckedChanged, chkPav.CheckedChanged from the event handler declaration)
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
' assuming the GroupBox is named gbTickets, add all handlers programmatically
For Each chk As CheckBox In Me.gbTickets.Controls.OfType(Of CheckBox)
AddHandler chk.CheckedChanged, AddressOf chk_CheckedChanged
Next
End Sub
Below I have the code for a framework I am working with. The problem I am having is that the Icon will not show up in the system tray unless the commented code is included. The weirdest part is that the other lines of code for the notifyicon1 properties will then work. Can someone please help me understand what is going on?
Public Class Main
Public WithEvents notifyicon1 As New NotifyIcon
Private Sub Main_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Width = 1200
Height = 850
ShowIcon = True
Me.Text = "V1.0.0.0"
' icon
Icon = My.Resources.icon_4
'set the form properties
BackColor = Color.White
Dim start As New startup()
End Sub
Private Sub Main_Resize(sender As Object, e As EventArgs) Handles MyBase.Resize
If Me.WindowState = FormWindowState.Minimized Then
notifyicon1.Visible = True
Me.Hide()
Icon = My.Resources.icon_4
notifyicon1.Visible = True
notifyicon1.BalloonTipText = "Hi from right system tray"
notifyicon1.ShowBalloonTip(500)
'With notifyicon1
' .Icon = My.Resources.icon_4
' .Visible = True
' .ShowBalloonTip(500)
'End With
End If
End Sub
Private Sub NotifyIcon1_DoubleClick(sender As Object, e As MouseEventArgs) Handles notifyicon1.DoubleClick
Me.Show()
Me.WindowState = FormWindowState.Normal
notifyicon1.Visible = False
End Sub
End Class
As Hans pointed out, you need to set the notifyicon1's Icon property, which you do in the With statement, but not in the code above.
Change the Icon = My.Resources.icon_4 with notifyicon1.Icon = My.Resources.icon_4, as you don't seem to be using the Icon property anywhere.
So here's what I want. When i click on a button it will show 1 PictureBox and 1 RichtextBox (Which is btw Visible=False so that it will not show unless clicked when the program is opened) as you can see here on my screenshot:
enter image description here
But when I click other button it doesn't change it stays with the first button i clicked when i opened the program. I really don't know the code since I'm new with VB.
Here's the code I used:
Public Class Form1
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
PictureBox1.Visible = True
RichTextBox1.Visible = True
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
PictureBox2.Visible = True
RichTextBox2.Visible = True
End Sub
End Class
Thanks!
Since (I guess) both of the images are right on top of each other, you need to set the first image to invisible again. If not controlled which image is on top depends on the order the images where added.
You could do something like this :
Private Sub hideElements()
For i as Integer = 1 to 6
Me.Controls("PictureBox" & i).Visible = False
Me.Controls("RichTextBox" & i).Visible = False
Next
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Call hideElements()
PictureBox1.Visible = True
RichTextBox1.Visible = True
End Sub
This loop sets all PictureBox1 - Picturebox6 and RichtextBox1 - RichTextBox6 to invisible, now you can set the one you want to show to visible.
So just call hideElements at the beginning of all of your button handler.
If u want to change the amount of images/richtextboxes, you only need to adjust the 6 in the loop.
Hope I could help.
*I have a program that copies files from one directory to the other. I want it to run when minimised and an icon should show in the system tray so I created these codes. The minimise and system tray icon shows but AS SOON AS IT IS MINIMISED, THE COPYING SEIZES. I want the process to continue when the form is minimised. Please Help.
Private Sub Form1_Resize(sender As Object, e As EventArgs) Handles Me.Resize
If Me.WindowState = FormWindowState.Minimized Then
Notif.Visible = True
Notif.BalloonTipText = "Copying"
Notif.BalloonTipTitle = "Serious Copying"
Notif.ShowBalloonTip(5000)
Notif.Text = "Serious Copying"
ShowInTaskbar = False
Me.Visible = False
End If
End Sub
Private Sub notifycn1_DoubleClick(sender As Object, e As EventArgs) Handles notifycn1.DoubleClick
Me.Visible = True
Me.show()
ShowInTaskbar = True
Notif.Visible = False
Me.WindowState = FormWindowState.Normal
End Sub
i am new at VB.net.. i am making one Application for my friend. but i have one problem while using toolstrip...
i want to use toolstrip menu as tabmenu... like if i select any button from toolstrip menu, than form content change..just like while we change tab then form content will change which is inside that tab...is it possible to do so?
I don't have any code at the moment so i can not attach it..i have tried googling my problem but i didn't found any solution of this problem...hope you guys understand my problem..thank you!
If I understand you correctly, for each "tab" you could create a panel on your form and set the Visible property of each to False. Then for each button click event in your ToolStrip, you could make them all Visible=False apart from the one you want to show.
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles Me.Load
Panel1.Visible = False
Panel2.Visible = False
Panel3.Visible = False
End Sub
Private Sub ToolStripButton1_Click(sender As Object, e As EventArgs) Handles ToolStripButton1.Click
Panel1.Visible = True
Panel2.Visible = False
Panel3.Visible = False
End Sub
Private Sub ToolStripButton2_Click(sender As Object, e As EventArgs) Handles ToolStripButton2.Click
Panel1.Visible = False
Panel2.Visible = True
Panel3.Visible = False
End Sub
Private Sub ToolStripButton3_Click(sender As Object, e As EventArgs) Handles ToolStripButton3.Click
Panel1.Visible = False
Panel2.Visible = False
Panel3.Visible = True
End Sub
End Class