[2008] TabControl On UserControl - Adding Tabs (Design-time)?
Dec 2, 2008
I have a TabControl on a UserControl. I want the UserControl to behave like a TabControl as usual (it contains only the TabControl and a Contextmenu), including Design-time behavior.I have spent the last two weeks finding out how to add the Design-time behavior and I think I have come a far way.The problem is with adding TabPages during Design-time (while the UserControl is a custom tabcontrol, it is using regular windows forms TabPages).In the Designer class, I have the following code to add a TabPage:
vb.net
Dim dh As IDesignerHost = DirectCast(GetService(GetType(IDesignerHost)), IDesignerHost) If dh IsNot Nothing Then Dim i As Integer = tc.SelectedIndex Dim name As String = GetNewTabName() Dim tab As TabPage = TryCast(dh.CreateComponent(GetType(TabPage), name), TabPage) tab.Text = name tc.Controls.Add(tab)
[code]....
So it would add the control to the TabPages collection if it was a TabPage, and use the regular routine otherwise.
(I'm now using 'tc.Controls.Add(tab)' again instead of 'tc.tabCtrl.TabPages.Add')
But, I don't think the designer even gets that far because it is telling me I cannot add TabPages to my usercontrol, because only TabControls can accept TabPages... How can I make my usercontrol understand that it is a TabControl (without Inheriting from a TabControl?)
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Dec 9, 2011
Using Visual Studio 2005 (vb.net) (windows forms) on Windows XP, I have a standard Microsoft TabControl.A button click adds/removes an image from 1 of the Tabs.Seems like the image is placed OVER my tab's text, making it unreadable.Why isn't it like it should be: Image on the left. Followed by text on the right.Why is the image being placed OVER my tab's text? Do I need to do some kind of "refresh" or "redraw" before it will appear as it should? I don't see any way to "make the image appear on the left edge of the tab". (NOT the tab-page.) ... and then place the text just to the right of the image. (Just like a normal image+text tab can do.)The code is pretty simple, it just gets an image from my ImageList: cfgTab.ImageKey = "PadLockClosed.png"' Show CLOSED PadLockThe tab's text changes from: This is my tab text to: T(IMAGE HERE)is my tab text The image appears OVER the beginning of my text. But if I move to another tab, then move back, the image appears in the correct position:(IMAGE HERE) This is my tab text
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Jul 27, 2009
I'm creating a usercontrol with a splitcontainer. I can reposition the split when running, but when designing on a form I can't adjust the position graphically, I can only do it by typing a new SplitterDistance. Is there a way to get a grip on that position at design time?
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Jan 10, 2011
I'm developing a form with usercontrols which have to be edited during disign.The project has a connectionstring in de my.settings.The usercontrol has a property which is also called connectionstring.Now, I want to pass the project connectionstring to the usercontrol connectionstring, when the usercontrol is dragged to a form. (All during design)
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Oct 28, 2009
I am trying to extend the functionality of the ToolStripPanel control (which is a panel hosting ToolStrips that can be moved during design-time, as I'm sure you know).One thing I wanted to add was a 'ToolStrips' property, which would be a collection of ToolStrips the user can edit via the collection editor in the designer. So instead of manually placing ToolStrips on the ToolStripPanel via the toolbox, the user can just use the property to add/remove (or even edit) them. This is of course similar to how you add/remove/edit TabPages in a TabControl.So, I came up with this code, which I have used successfully in the past for other controls:
Public Class cToolStripPanel
Inherits ToolStripPanel
Private _ToolStrips As New ToolStripCollection(Me)[CODE]....
The cToolStripPanel control inherits the ToolStripPanel control and adds the ToolStrips property, which is of type ToolStripCollection. That class, in turn, inherits the Collection(Of ToolStrip). In the InsertItem method, I add the 'item' ToolStrip to the cToolStripPanel. Of course I also need to override the RemoveItem / ClearItems methods but that's for another time.I am 100% sure that this code should works, at least for other controls. If you replace ToolStrip with Button (for example), I can add buttons via the property during design-time just fine, exactly the way I want it.But it seems that ToolStrips are special. When I try to Add a toolstrip (via the collection editor Add button), a null reference exception occurs. I've been trying to debug this all day and I've finally come up with a possible candidate for the problem... (I've actually used design-time debugging for the first time ever, which was pretty cool, and which showed me that the InsertItem method is not run!)
I think the problem is that the collection editor cannot create a new instance of the ToolStrip class. I can remember when trying to inherit from the ToolStrip, I was forced to add a constructor, because the ToolStrip "has more than one constructor that can be called with no arguments".Perhaps this is causing my problem? Do I (and if yes, how?) have to somehow control the creation of a new instance of the ToolStrip? Or am I completely off track and that is not what is causing the problem? I'm sure that it's a problem with the ToolStrip class, since I can use the exact same method with other controls just fine. It's only when I change the type to ToolStrip that it starts getting angry at me....
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Apr 19, 2011
In a VB.NET winform App I want to place icons on each tab header of a TabControl.I set the ImageList property of the TabControl and for each Tab I set the ImageKey property.My icons show as expected on each tab at design time within the IDE but when I run the App, my icons don't show (an empty space is shown instead).
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Aug 3, 2010
How can I change the color of the tabs of a tabcontrol? I tried to search the forum but everytime I hit the search button I get an "Bad Gateway" error.
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May 25, 2009
I have a form where the user will choose multiple clients from a subform that has a DGV.Each row has a checkbox indicating that it has been selected.When the user is finished selecting the clients, I need to store the selected clients ID Number, Name, and Program Number either in a temp table or another method to only handle about 30 records.After that part is done, I need to create a new tab for each client which has a UserControl on the tab. I have the new tab thing working but I need to learn to apply the client to the first new tab/user control then create another and so on.
Private Sub frmCaseNts_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[code].....
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Jul 8, 2009
I'm trying to create an owner drawn TabControl that looks like the tabs in Visual Studio on XP (might look different in Vista, not so sure).So far, I've got the background and the blueish border, and now I've run into some trouble drawing the 'tab headers' (where the text is displayed).Here's what I got so far:
vb.net
Imports System.Drawing.Drawing2D
Public Class cTabControl
#Region " Colors "
[code]....
Why isn't this working? How do I draw a border like this around a 'normal' OwnerDrawn tabcontrol, without the funky SetStyle method..?also, the DoubleBuffer ControlStyle (in the SetStyles method) option is not listed in the Intellisense list, but it is accepted when I finish typing it... Is that a bug?
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Jun 2, 2011
I'm trying to make a collection class for buttons to address them as a whole, only I want to design the buttons at design time, and not add/set their properties programatically at runtime. Each button has its own image, so it doesn't seem right to add a bunch of lines of code which assign the properties when they're always going to be the same thing.Is it possible to create the controls at design time and then add them to an array at runtime? I did this, iterating through the buttons on the form and adding each of them to the class below.The problem is that once they're added they seem to be a different instance because changing their positions has no effect on the design-buttons on the form. Essentially i wanted the collection to be a reference to the items belonging to the form.Is that possible or should I be doing this a different way?[code]
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Dec 4, 2009
I have created a user control that mimics what a label does. I realize I could have inherited the label control, but I am working on understanding the process. I wish to add items to the control. normally (in the code of my project) would do:
Form1.Label1.Controls.Add(mylabel)
After creating mylabel in the code of course.
[code]....
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Mar 17, 2009
i have created my own custom propertythe property is of type collection ,it displays a form which allow the user to add a list of images and strings,it stores the data in a collection ,my problem is , i have noticed that after adding items to the collection at design time , there is no code generated in the .Designer file of the form and there for when i close the for / save it and reload it , all the items that i added to my custom property are gone.my question , what did i miss here ? how do i make my custom property generate code at the .designer file for the items i have added to my property?
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Jan 7, 2012
What I want is a tabcontrol where it doesn't show the tabs. I want icons in a toolstrip that will select the tabpages. The closest I can get is setting the ItemSize to 1 (if it is zero, it reverts to the default of 20).
How can I have a tabcontrol with no tabs displayed?
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Jan 22, 2009
I am having tabcontrol in which i want only to hide tabs.Consider i am having 2 tabpages. I want to hide only tabs of tabcontrol not tabpages.Then i will show the tabpages with this coding on button click.TabControl1.SelectedIndex = 1
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Jan 29, 2012
Ive seen some discussion on here about how to hide tabs in a tabcontrol but they all seem to be in C or some variant. I havent seen one for vb.net (i cant do C)
What i want to do is hide or disable all some of the tabs till the user has logged in. Ive sorted out the login and logout. All i need to do is add the code to enable/disable some tabs until the user has logged in.
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Jul 27, 2011
TabControl1. It is the only control that is created in design time. My text editor is a tabbed program. I have a addtab() function that whenever teh user clicks the toolstrip addtab, the tabcontrol adds tabs. THe code below is for the addtab()
Private Sub AddTab(Optional ByVal file As String = Nothing)
NewRTB.AllowDrop = True
NewTab.AllowDrop = True
[code].....
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Jul 5, 2011
Ok, so I'm using vb.net and there isn't a way to unhide/hide tabs so I have to use TabControl.TabPages.Add() and TabControl.TabPages.Remove() to do this. All of my tabs are labeled as Account1, Account2, etc. all the way up to Account25. I want to make a loop and be able do something like this so that I can add the tabs in the right order:
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Oct 6, 2009
I am trying to add an ArrayList property to a UserControl with the following
Private _hist As ArrayList
Public Property History() As ArrayList
Get
Return _hist
End Get
[Code]...
I get an 'Object reference not set to an instance of an object' error.
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Dec 17, 2010
There are multiple examples of modified TabControls on the Internet which allow the user to reorder the tabs using drag and drop. However, all seem to use the following technique:
Determine which tab is being dragged
Determine the index to which the tab is being dragged
Empty the tab page collection and add in the new order
The last step, hoewever, causes the control to flicker alot. Besides this, when there are a lot of tab pages on the tab control, it is rather slow.
Is it possible to swap items (i.e. swap indexes) in a TabPageCollection, without the TabControl flickering?
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May 9, 2009
I'm trying to images or favicons to tabs....Maybe there is a way to save each websites favicon, Save it to a folder on the comp, AND return it to the tabcontrol1.selectedtab...
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Aug 12, 2011
I need to be able to programmatically create new tabs on a TabControl, add controls to them, and be able to update the controls in each tab from another function. I already have a function to add tabs to the control, and to add controls to those tabs when they are created, but I'm stuck as to update the controls after they have been created.EDIT: This is what I have to make the tabs and add the controls:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim tabpage As New TabPage
tabpage.Text = "(empty)"
[code]....
I can't seem to get back into the account I used to post this question, so I have to post my follow-up to Tim's question in the comments for the previous answer as a new answer.Debug.WriteLine(TabControl1.TabPages.Item(2).Controls.Find("textbox1", True).Count) returns 0. The tab and the controls have been created prior.
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Aug 11, 2011
How do you close ALL of the tabs in a TabControl except for the currently selected one?
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Mar 26, 2011
I have an app with a TabControl that has 4 tabs on it. Each tab has probably 15 or so controls on it.This app is multilingual, so sometimes I need to resize things dynamically to make everything fit properly.For instance,I might need to resize a GroupBox to ensure a CheckBox can fit inside it properly if the language is changed. The language selection is on the tab with the GroupBoxes.
This dynamic resizing works flawlessly if I am already on the tab with the GroupBoxes when I make the language change, but when I start the app (on the first tab, not the language tab), my controls are being dynamically resized incorrectly (on the language tab).Further investigation showed me that only the first (currently selected) tab was the proper width, let's say 500, and the other tabs report 400 as their width, even though of course, they are indeed the same size.
I suspect this behavior is because unviewed tab pages are not... initialized? I'm not sure if that is the correct term. Even though I'm resizing controls on them? How can I bypass this behavior? Selecting each tab programmatically to "initialize" them does work, but is not a feasible option in this case, as the user can see it happening.
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Aug 4, 2009
I notice that the actual tabs on a TabControl are quite small (I am using VB 2008 Express). I would like more vertical space above and beneath the text on the tabs. I tried changing the padding in the TabPages collection but it didn't seem to do anything. Is there a way to make the tabs bigger?
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Mar 1, 2008
I want to have all the tabs hidden/removed in my tabcontrol at runtime then only display the one I want to (cludgy workaround for having to show tabs in TabControls).
I've been playing with ways to parse through all the tabs and remove them but am just not quite getting it. I'm a COMPLETE newcommer to VB as I've arrived from RealBasic and am trying to get my head around it.
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Feb 19, 2012
I am writing a tabbed webbrower program and i am trying to close the program when all tabs have been closed using ctrl+w. So far i have used the following code but it has errors as tabcount is readonly:If TabControl1.TabCount.Equals(0) then Me.Close() End If
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Jul 2, 2009
I have a tab control which contains other controls which I populate at run-time. I want to be able to hide certains tabs in this control and then make them visible at certain times. My understanding is that you cannot hid individual tabs in a tab control. All you can do is add them and delete them. If this is the case, is it possible to populate my controls in a Master TabControl at run time, then use a second tab control which is shown at the end of the routine, then add/delete tabs to this second tabcontrol and copy the populated controls from the Master TabControl to these tabs.
The idea being that I will create my tabs on the fly after the routine has run but I need the ability to copy populated controls held elsewhere into this tabcontrol.
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May 22, 2010
Why is it that any project I make in VB.NET runs very slowly? Even if I simply add a TabControl, switching between tabs runs slowly, flashes the control white, etc. Is there a way to make it run smoother?
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Aug 31, 2009
One of the great features of Page Frames in the now discontinued FoxPro language was that you could use a Page Frame (like a TabControl) and hide the tabs. The nice thing about this was that if you wanted (for example) to have simulated "frames" you could use a Page Frame control, hide the tabs, and that gave you endless frame that you could then access programmatically.I need to do something along the same lines. To further illustrate, if you look at any configuration screen in Office 2007, they all have a ListBox on the left, and then clicking on those Listbox selections brings up "frames" on the right with what you want to work with.This is the effect I want to create - but in .NET I cannot see a good control to use.
Panels - these seemed a good idea at first, but even when set to Visible and not Visible these frames hide each other so they dont seem like they will work.
GroupBoxes - Tried these but the same problem as with panels.
TabControl - Tried this, and it works great - but I DONT want the Tabs. Instead I want non-tabbed pages, that would then be like frames.
What is the best control to use? And, can I hide the Tabs somehow in the TabControl?
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Nov 26, 2011
i have a treeview which has a bunch of parent and child nodes preset at design time, there is 1 parent node tho which is called developer, that i want to add child nodes to at runtime.When the form first loads im trying to have it check a text file and for each line in the text file add the text/string from that as a child node tot he 'developer' parent node.
vb
Dim reader As String = My.Computer.FileSystem.ReadAllText(Application.StartupPath() & "ConfigDevs.txt")
Dim strs() As String = Split(reader, Environment.NewLine)
For Each s As String In strs
[code]....
Thats what i have so far, how can i set it so 'Dim parentNode As TreeNode = ' points at the 'Developer' node?
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