Runtime Versus Design Time Added Controls
Apr 8, 2011I want to ask a question about adding controls in design time (controls may be any win form control or a user control) and adding the control in run time.
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.net - Label Control Behaves Differently At Design Time Versus Runtime?
Jul 8, 2009I am creating a custom Label control (by simply Inheriting the standard Label control and re-painting the background and text) because I need a very specific background and border. In the constructor of the control, I set the AutoSize property to false so I can have a standard default size for the new label.
Public Sub New()
/*Set the default size of the control to 75x24*/
Me.Height = 24
[code]....
In my application that uses this control, if I create the new custom label at run time (in code), the AutoSize property stays False, and it works properly.If I try to add the new custom label to my form at design time, it comes in with the AutoSize property set to True, and I have to manually set it to False in the properties window. It's not a huge problem, but I don't understand why the behavior is different.
Forms :: Controls Added At Runtime
Jan 1, 2011I'm just starting out using vb.net and i am writing my first application. I have added some comboboxes at runtime to my form using the code below.[code]Now my question is now that i have these controls added to the form, how can i iterate through them all and collect the values for sql injection. I have given each combobox a specific name when it was created such as Ball1, Ball2, Ball3.[code]
View 4 RepliesRefer To Controls That Are Added At Runtime?
Oct 30, 2010How do you refer to controls that are added at runtime e.g. I can add a combobox and a handler, but trying to reference the controls name in code gives an 'not defined', error so in my example, the control is visible, but I cant populate the combo box or use it in anyway.
View 2 RepliesContainer Controls Access Controls At Design Time?
May 13, 2009I've been building controls for many years professionally and personally, but even back in VB6 days I just could not work this out. After all this time I remembered about it again.If I create a usercontrol/containercontrol and add one or more controls to the controls surface, I just cannot figure out how to access the controls at design time.
View 4 RepliesVS 2008 : Saving Controls Added At Runtime?
Mar 22, 2009I am creating a program which allows the user to add some buttons during runtime. Each button can be moved, sized and added to any tab on a tabcontrol. What I would really like to do is binary serialize a class that contains the properties of each button including which tab it's on.
View 4 RepliesDesign Time Changes Not Affecting At Runtime
Jul 26, 2010In some of the forms ,whenever i change some properties using the Properties Window of some controls or the form they get reflected in the Properties Window but will not get changed at Run Time.
I am facing this in quite many of the forms, hence i am applying the property changes in form load, this is causing performance breach .
.net - Images On A TabControl Show At Design Time But Not At Runtime?
Apr 19, 2011In 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).
View 1 RepliesC# - Reset Runtime Changes To A Dataset With A Design Time Schema .NET
May 16, 2012I have a small dataset which has most of its schema defined at design time, but I add a few columns to one of its tables at runtime. My problem is how do I reset those changes? he dataset is not linked to any datasource. It just has its own table which I "manually" populate. The static columns have been added to the datatable at design time. However, I add a few columns as runtime based on a list of categories. Like this:
[Code]....
The dataset is used in a small dialog that pops up within my application. I add the dynamic columns when the dialog is opened by using the Load event. Everything works great the first time. But if you close the dialog and reopen it, there are problems. My startup routine tries adding the dynamic columns again, but an error is thrown saying the column already exists. I have tried a lot of things and did some reading but I can't figure out a way to reset the dataset when the dialog is closed. The only solution is to close the whole application and reopen it. I have tried the following in the Leave event of the dialog form:
[Code]....
Error Handling Works In Design Time But Not In Runtime
Jul 1, 2012I use try catch finally to handle errors in my program. And these work fine when i debug application, but when i install it, error handling does not work?!
View 1 RepliesVS 2008 : SQL Query - Works At Design Time But Not Runtime?
Aug 16, 2010I've created an SQL Query using the query builder. In the query builder, you can test the query by clicking the button "Execute Query", and entering the desired values in the parameter fields.
My query returns the correct results when I do this, but when I seemingly pass the same values at runtime, I get 0 records returned.The query is designed such that you can pass nulls if you don't wish to filter data by that particular parameter.
SQL Query:
SELECT ID, UPC, Quantity, Manufacturer, Style, Color, Size, Category, DateReceived, Cost, OriginalRetail, Retail, LocationID
FROM Inventory
WHERE (UPC = @UPC OR
[code]....
In the query builder "Execute Query" dialog, I enter a value I know that the db contains in the "Size" field, "1/1/1900" & "1/1/2199" in Dates A & B, respectively, and nulls for all other fields. This returns 1 record, which is just as I expected. It works correctly.But when I pass the same values into the method created by the designer, I get 0 records returned. I can't figure out where the problem lies. Even if I enter nulls for all fields other than the dates, it returns 0. This tells me that the dates are causing the problem, but I can't figure out why, because I'm passing strings equivalent to what I entered in the query builder.
Generating Controls Design Time
Jun 13, 2011I'm making a quite large database management program(well actually 3 databases) and I am going to be creating a tab page for each database and under that a tab page for each table. each database has +- 200 tables and each of those has between 10 and 50 columns. I am also gonna put controls on each tab page of a table that represent a a row of data.I need very specific tooltips, functions for each table so generating it would be to complicated for me.
I need a automated way of creating controls on design time depending on the column datatype like a rich edit, text box or numeric up or down. and a label that has the same text as the column name It should also rename the name of the control to something appropriate .This can be done using visual studio's database wizard, but last time when I was about 30% done with one database it had already auto generated more than 1000000 lines of code. When I ran my program it took 10 minutes to show the first form and I have a powerful pc.
Grouping Controls During Design Time?
Aug 21, 2009I vaguely remember something about a hotkey or menu that would group controls together at design time so you could drag 2 or more controls around and they would remain relative to eachother. You could work on something else and come back and the controls would still be grouped.
Does anybody know what this feature is called and how I can access it?
Setting Background Both At Design Time And Then Runtime - Program Just Closes
Aug 13, 2011I'm using .net 2008 Trying to create a small graphic component, I have a problem setting background both at design time and then runtime. I derived a panel like this
[code]...
But it isn't working! If I don't Overrides Property BackColor, this is working as expected but I really need to group in my custom tab.
VS 2010 - Creating Menu At Design Time And Populate At Runtime
Jun 19, 2011Is it possible to create a menu at design time and populate it at run time and then display it at the mouse pointer when I click on a cell in a datagrid?
View 11 RepliesDesign-Time Support For Custom Controls?
Apr 17, 2011Now as the title says, I'm looking for guidance on some design-time support for the many custom controls I'm working on at the moment.At the moment I'm 3 months in on a Business and Inventory management system for my mothers business. It contains many, many custom controls I had to build from scratch because the ones provided just didn't cut it for what I needed. Now one in particular is a tab page control. Just as the provided TabControl Visual Studios supply's us. It has a lot of design time control. Such as clicking the tabs and adding controls to the panels being brought to front by the corresponding tab being clicked. I had a friend of mine try to show me what I had to do, but the way I had already built my control would have made it difficult - His words, so he never officially showed me anything. If it is true what he said then I can skip that, no problem. But adding the controls to the panels during design time I must have, but cannot seem to find anything through Google searches, text books or even kids majoring in software engineering.
View 4 RepliesAdding Controls Made At Design Time To Collection
Jun 2, 2011I'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]
View 2 RepliesChange Properties Of Inherited Controls At Design Time?
Mar 23, 2009I am using visual inheritance and was wondering if there is a way to change the properties of inherited controls at design time, preferably in the form designer. If not, then in the designer code. I have my control declared as Public in the base class. I can access it in the child form code, but not in the form designer. Is this just not possible?
View 3 RepliesCreate The Report Template At Design-time And Then "binding" A Datatable To It At Runtime?
May 18, 2011New to reports here. Using VB.NET, my application makes use of datatables it creates from a postgresql database.These datatables are defined at runtime rather than design-time, and I would like some way of generating reports from these datatables at runtime as well.
Should I be trying to create the report template at design-time, and then "binding" a datatable to it at runtime?
VS 2010 Treeview, Adding Child Node At Runtime To Design Time Parent Node?
Nov 26, 2011i 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?
Added To The Items Collection In Design Mode?
Nov 10, 2009I have a ComboBox control with some items added to the items collection in design mode. What I want is when an item is picked from the ComboBox a different value is actually used in the code, instead of what is displayed. I am aware of the DisplayMember & ValueMember properties, but I'm not sure if that is what I need to use. All the examples I found were for bound data.
View 3 RepliesVS 2008 Cannot Find Control Added In Design
Sep 26, 2011At some point in the past, I have added a TabControl1 to my Form in design, now I can't find. I need to view it so I can make some changes. I have looked in the 'Document Outline' and is not there as well. However, the control must be somewhere because it works fine when I run the program.
View 2 RepliesList To Update Every Time And Show The Values Each Time To Which The Previous Value Is Added To The New Calculation?
Jun 22, 2010The idea with this form is to add the futures which is calculated when the button is pushed but I need the list to update every time and show the values each time to which the previous value is added to the new calculation, e.g. of what it should look like in listbox:
Year 1: $1,290.93
Year 2: $2,724.32
Year 3: $4,350.76
etc....
I have been working on this a while and I am at a standstill, I was given a function to clear the form everytime it calculates but I don't know how to implement it, I am new to VB. Here is what I have so far:
Public Class frmFutureValue
Private Sub btnCalculate_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnCalculate.Click
[code]....
IDE :: Component Will Not Render At Design-time, But Works Fine At Run-time?
Jan 30, 2009using VS2008, targetting framework 3.5I have a rather complex UserConrol which does some of its own rendering.I display this UserControl on a form.Opening that form in the Designer creates an instance of the UserControl in the Designer, which tells me a NullReferenceException is occurring in one of my rendering methods.I have attempted to correct this by making alterations to the UserControl's default constructor, but have not found success.
View 1 RepliesAdd A List Box To Form That Was Added During Runtime?
Dec 22, 2009I am having trouble adding a list box to a form that I have added during run time.[code]...
View 3 RepliesAdded A Datagrid At Runtime On A Form?
Mar 21, 20091. i added a datagrid at runtime on a form. i want to bind a datasource to the datagrid in a button's click event handler, but the datagrid doesn't seem to be visible anywhere else outside the form load event where it is declared.how can i find the datagrid control?
2. and another beginner question.. how to i declare a string that spans multipe lines? i tried with the + operator like in c#, but it doesn't work.
Select Tab Page That Has Been Added At Runtime?
Jun 5, 2010I add my tab pages at runtime, I am trying to select a tab from a sub.
This is how i generate my tabs
Dim tp As New TabPage("User Management")
Dim f2 As New fmUserManagement
f2.TopLevel = False ' REQUIRED
[Code]....
Shell From Added MenuItem At Runtime?
Aug 21, 2009I am building a program which will add items to a menu and launch the appropriate application by clicking the menu item I have added. I have linked to a data file and retrieved the ApplicationID, ApplicationName and ApplicationLink, the later being the location of the EXE file on the selected computer.I believe I can create an EventHandler on the fly to hold the link for each application[code].....
The above will add the Name to the menu, but I can't seem to SHELL the ApplicationLink.
Have To Save To See Design Changes At Runtime
Mar 23, 2012Just started with VS2010. (vb)
Coming from VS2005. (i skipped VS2008)
My question is this. Why do I have to hit save before every build in order to see design changes at runtime? Example: I change the text on a button at design time. I click on run and the text does not reflect the change. But if I saved the form before clicking run, than it does. Also like to add VS2010 runs much slower compared to VS2005 running on the same computer. I understand VS2010 can do more, but a lot of times you don't need it to.
Add Event Handler For A Control Added In Runtime?
Jan 3, 2010How do I add an event Handler to a control, for example a textbox, to handle any keypress event?cause I want this textbox(which is added in program runtime) to only accept any convert any small letter to Upper case.
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