I'm having a lot of trouble trying to add a new control to a dynamically created TabPage at run time, I have viewed many threads with similar help requests and cant seem to make the codes work!
Here's what I've got:
Dim albumscount As Xml.XmlNodeList
albumscount = config_doc.SelectNodes("component/config/menu/album")
i = albumscount.Count - 1
Dim albumtitle As Xml.XmlNode
[code].....
I have a WinForms application that I need to dynamically add controls to at runtime. I searched for this and I was initially led to the TableLayoutPanel (TLP).
View 4 RepliesI have VB 2008 Express and I am also new to VB. My problem is I cannot find any assistance with creating an Event that is attached to a Control that I inserted on a dynamically creeated TabPage. I call the "create_tab" sub (below) that creates a New TabPage and add some Controls (Button, two textboxes). Now, that I have the TabPage (and there could be multiple), I want to bind an Event to these items. So when a user Clicks on the Button in TabPage1, for example, a Sub executes where I can manipulate the data contents of the textboxes. Here's My code that creates the tabpages dynamically.
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I'm wondering, when I add dynamically controls in runtime in the form - is there a way to save this controls, and they appear the next time when you run the application?
I'm using VB9.
What I'm trying to do is build 16 forms dynamically at runtime (all will be identical). These 16 forms each will display a camera, which is using an ActiveX control made by a 3rd party. I am able to create the forms correctly and provide all necessary parameters for each control, but since I have to declare my own AddHandler event which checks if the camera connected, I need to somehow reference the ActiveX control at runtime, but I can't tell it which form it's on because it says it's not declared.[code]...
View 9 RepliesI am trying to display an usercontrol(has several panels one on top of the other panel) on tabpage. I am using below code to achieve this.
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I'm trying to add a "panel" with controls dynamicaly. Something like the code below, Clicking "Add" button, displays a "Panel" with the controls(which are within a table), the number of "Education" someone can enter is unlimited. I know how to capture the data, but i can't figure out how to implement/code this,
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I'm developing a website in visual studio 2008 using (asp.net/vb)I have to allow registered users to build pages and add controls that are already defined by the same userMy problem is how to build this page dynamically?In other words, I'd like to make like any CMS (e.g. Joomla). CMSs allow us to make new pages and add our controls then save them..
View 1 RepliesI am working on a project for a handheld in Visual Studio 2008 where I need to add a group of labels to a panel that correspond to a record on the database. The record is a "Pass/Fail" Record. So, if the record is a "Fail", the failed items will be added below the main group of labels; therefore, many child groups of labels will be added below the main group, which is theoretically the header record. I am using a second panel to add the failed items. My issue is how to dynamically add, name, and position the failed item labels and panels. Below, I have included a sample of what I am trying to accomplish.
View 12 RepliesI have been set a project from school to design snake in VB.Net but i am struggling to dynamically add the user control which acts as one of the dots in the body of the snake. Every time i add a dot on to the snake the previous vanishes. I assume this is due to me overwriting the previous one by creating a new instance of the object but i cannot find a way of adding a new one in.[code]I have tried using body(i) and other ways of adding a new instance of the object but am stuck.The subroutine will be called up when a new control is needed.
View 1 RepliesI have a User Control which returns a table of data, which in some cases needs to be looped, displaying one on top of another. I am able to dynamically add a single instance of this by placing a fixed placeholder in the page. I am now trying to work out how to add more than one, given that I don't know how many might be needed I don't want to hard code the Placeholders. I've tried the following, but I am just getting one instance, presumably the first is being overwritten by the second
My HTML
<div id="showHere" runt="server"/>
VB
Dim thisPh As New PlaceHolder
thisPh.Controls.Add(showTable)
showHere.Controls.Add(thisPh)
Dim anotherPh As New PlaceHolder
anotherPh .Controls.Add(showTable)
showHere.Controls.Add(anotherPh)
How do I make it add repeated tables within the showHere div?
I'm trying to add a DataGridView to a Split Container Panel. I am able to add the control, but it just places it on top of the old one. What I want is to add it below the existing one. How to do it.
View 1 RepliesI am adding user controls to a panel that is empty, but when i do that, the scroll of the panel goes down.
I tried to set the panel.verticalscrol.value to 0 but that does not do the trick, so..
is there a tutorial (i looked, couldn't find) on adding controls at runtime?
View 8 RepliesI've created a code that will add a control on runtime.
Sub Button_AddNewGradeEquivalent_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button_AddNewGradeEquivalent.Click
Dim newGradeRepresentation As New TextBox
Dim newGradeCondition As New ComboBox
Dim newGradePercentage As New TextBox
TextBoxItems += 1
[Code]...
In the helpfiles of Visual Studio 2008 I read control arrays are no longer supported. There is an example for the new situation but then you need to hard code the names of all the controls beforehand.I do not know how many controls I need, could be one or 5000 (think simple image browser). Is it still possible to create something like that or should I change to a different programming language like Phyton? At the moment I work around it by using a browser control and then manipulate the <img> tags but I'm puzzeld as to why this functionality was removed and if there's a solution to the problem.Another thing I don't understand is where the app goes when it's installed with 'Click once'. It dissappears completely, doesn't show up in 'Program Files', can not be found by the search function but it *is* somewhere because you can start it form the Start menu. However, I use data which is in a subfolder of the program folder, which I nor my program can find any more after the app is installed. The program runs but it can't find any place to put/get its data so in the end it doesn't work.
I work around it by *not* installing the program but have people just run it after unpacking the downloaded folder. This works great but I wonder how long this will be the case until Microsoft disables this possibility? I have no idea why they would, but I also have no idea why they did remove the functionality I mentioned above. I already changed to PHP and MySQL because I had to throw away my carefully built W2K+MSAccess image database a few years ago and after installing Vista Visual Studio 2005 was a goner. OK, I upgraded but then no control arrays any more and now they hide the apps when you install them? Why on earth would they do that?
I have a Data Repeater to which I need to add x number of images depending on their existence in the database.I need the images added within hyperlinks for Javascript functionality. In order to dynamically add the hyperlinks and images I have placed them within a panel in the data repeater and am adding them in the ItemDataBound event.The problem is that only the first image is being written to the datarepeater.[code]
View 2 RepliesI am very interested to see the answer as I would like to know the significant differences (if any) of generally using one more than the other. In a few days, I will be starting my Java programming class to familiarize myself with the language.I do know that Java uses objects.My question/discussion is not necessarily related to .NET (although in a way, it is); my question is more about what is a better practice and why.Is it more proper to declare buttons and such through runtime rather than designer? Is it just more work typing everything? Or does build and run much faster?
View 9 RepliesCode:
Private Sub btnMonSet_Click(sender As System.Object, e As System.EventArgs) Handles btnMonSet.Click
My.Settings.tweetMon = tbMon.Text
If tbddOccurrence.Text = "Just Once" Then
If cbToday1.Checked = True Then
lblPanel.LblScheduledTweet1.whenDate = Date.Today
[Code] .....
The goal of this code is to add a control to a panel in runtime. This MUST be done in runtime for the purpose I intend. The problem is that, when I add a second control, the first one disappears.
I need a little help with variable scope ( I think that is the right term) As I understand it, the follow could be used to add a button to my form at runtime ...
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I want a method that creates a new button with the object name that I pass to the method.
Updating a VB6 prog in VS2005 on Windows 7. The prog has an MDI + child forms and there are a number of content types, with varying numbers of controls being set up and positioned from setup files.On forms which are not child forms I can easily add controls at run time like this:
Dim lab As New Label
With lab
.Left = 0 : .Top = 0
.Width = 800 : .Height = 800
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This doesn't work on a child form, no label is visible. Can't see any obvious problem in quickwatch.
Updating a VB6 prog in VS2005 on Windows 7. The prog has an MDI + child forms and there are a number of content types, with varying numbers of controls being set up and positioned from setup files.On forms which are not child forms I can easily add controls at run time like this:
Dim lab As New Label
With lab
.Left = 0 : .Top = 0
[code]....
This doesn't work on a child form, no label is visible. Can't see any obvious problem in quickwatch. Is there some known reason for this or do I just have a wierd bug?
I am working with my project and I have difficulties in my program. This is the set-up: I put a textbox1 and a button1 in the form, textbox1 is for the property of the label text to be add
when I click the button1 I have another textbox, label and a button,I want the added button to remove the textbox, label and if possible the button itself, is there a way to delete a control by the added button?
im trying to work with adding controls in runtime. Anyways ive added a ContextMenuStrip control in runtime and added a item called "Display". The ContextMenuStrip is also added to textbox's that are also added in runtime and when i right click a textbox i see the "Display" but i want it to do "msgbox(textbox.text)" when i click "Display".
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I am dynamically creating and adding dropdown controls to DevExpress XtraGrid.That works fine and I can add a dropdown control to any column I wish.My main problem is that I need to have the first element in the dropdown control displayed. But after I dynamically add 3 dropdown controls to the grid, only the last one has the element displayed. The previous two do not.Although, I add the elements
this is what the code looks like:
vb.net
Dim column as DevExpress.XtraGrid.RepositoryItem.GridLookupEdit
For i as Integer = 0 to dsSometing.Tables(0).Rows.Count - 1
column = New DevExpress.XtraGrid.RepositoryItem.GridLookUp
[code]....
The code will go tru and add lets say 3 dropdown controls, set their .DataSource to datasets I need, but it will only show .NullText of the last added control.
How do you add an arbitrary number of controls to a form at run time? With indexed controls I could define the 'seed' control at design time and reference 'clones' of the 'seed' control at run time via the index. Now I must declare each additional instance of the control at run time then set each individual property that differs from the default for that control for each instance. Then I must add the newly declared control to the appropriate container controls collection. I'd like to do this in a loop but how can I get away from using a fixed control name in the declaration:
Dim controlname As New Control
I can't use a string that I can manipulate the contents of for controlname because it sees it as a double declaration. I can't use an array such as Control(index) for controlname. Dim Control(maxindex) As New Control doesn't work. Dim Control(maxindex) As Control works but any assignment based on this such as Control(indexvalue).Name = "ControlName" fails. It didn't address the issue of handling the declaration of new controls in a loop with some kind of variable name for the control.
I tried to change the toptext of my tabpage and the title of a groupbox with the following code.
View 4 RepliesI'm an absolute nebwie, trying to create a program for at work. It is supposed to become a logging program to log certain events. These events have to be recorded in input fields.
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Been searching a trying examples for a couple of days and always fall back to the "null reference" error on this one. I have a set of instructions coming from a SQL database and the number of instructions is a variable. Therefore, I have a TabControl which I add TabPages to at RunTime depending on the number of instructions there are. The TabPages are then created with the names; Step1, Step2, Step3, etc.Each TabPage is made with the same controls and all of the controls are named the same from page to page (e.g. "instr" is the name of a TextBox control that exists on every TabPage).I can successfully create a GetControl method that will return the correct TabPage, but I cannot reference any controls on that TabPage.I can only change properties of the TabPage.If I try to reference a specific control on that TabPage, like the "instr" TextBox control, I get the null reference error.[code]
View 9 RepliesI have an application where the tabpages are created at runtime and the forms are docked into the tabpages as controls. Now I want , a right click on the tab to ask the user whether he wants to undock the form as a seperate window. Is this possible
View 1 Replies