VS 2010 How To Create Methods For Objects Created At Runtime
Dec 26, 2010If I create new textboxes, or any objects, based on user input, how can I create methods that use those new textboxes (objects). For instance,
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Access / Use Objects Created At Runtime
Dec 23, 2010I'm trying to develop a program that turns matrices into their reduced Echlon forms. The user specifies the number of Columns & Rows for the matrix, which is generated by the following Sub Routine
Private Sub ButCreate_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles ButCreate.Click
'Columns and Rows are specified by the user
rows = TxtRows.Text
columns = TxtColumns.Text
'clears all of the controls(text boxes) from the TableLayoutContainer
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How to do is access/manipulate those newly created textBoxes. After the user enters values to those boxes, I want to assign each of their columns to an array.
Using Same Click Event For Many Runtime Objects Created
Jul 23, 2009I have created a program that allows the user to click on screen and add many ovalshape objects. But I have got stuck as now I need to create a rightclick event for any of the runtime generated ovalshapes on screen and dont know how to refer the right click event to all the many objects?
My code for creating the oval's are as follows:-
Dim
Drg As New ShapeContainer
Dim Shape As New OvalShape
Drg.Parent =
Me
Shape.Parent = Drg
Shape.Size =
New System.Drawing.Size(10, 10)
Shape.FillColor = StampColor
Shape.FillStyle = FillStyle.Solid
But how do I write a click event now for any of these runtime created objects???
VS 2010 : Moving Objects In Runtime?
Jan 9, 2011How do you move objects in run-time?
View 1 RepliesVS 2010 .NET / Access DB - Column Created At Runtime Is Not Updating?
Sep 20, 2011My program creates columns at runtime with the following
Cmd = New OleDb.OleDbCommand("ALTER TABLE [Parent] ADD [" & ColumnDate & "] int", con)
objCmd = New OleDb.OleDbCommand("ALTER TABLE [Parent] ADD [" & ColumnDate & "] int", con)
objCmd.ExecuteNonQuery()
I add data into the newly inserted column with the following
da.SelectCommand = New OleDb.OleDbCommand(sql, con)
Dim cb As New OleDb.OleDbCommandBuilder(da)
cb.QuotePrefix = "["
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I added a column to the table manually via opening the access database and all the above approaches work for editing data stored in that column. So I believe it is something to do with the fact that the columns are created at run time.
VS 2010 Retrieve And Set Values From A Runtime Created Text Boxes?
Oct 30, 2011Public Class Form1
Private tb = New System.Windows.Forms.TextBox
Dim posx As Integer = 0
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Passing Objects To Methods?
Jun 26, 2010I always thought I understood how this works...but lately I have started really using interfaces and now things arent doing what I am expecting.
using entity framework, I have a service for each object that is responsible for interacting with the database and such....on my one service I am passing the collection of objects to my service as an icollection(of contactinfo) before I pass the object, the changetraker has the right states. however in my method, this is not the case and all states are set to unmodified.
Private Sub SaveExecute(ByVal param As Object)
Dim srv As Services.ContactInfoService = GetService(Of Services.IContactInfoService)()
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As I said above the Me.contacInfoCollection has the right changetracking states. But Once its passed to the srv.savechanges it reverts to unmodified. I am sure its something silly I am missing...the whole EF thing can be confusing to me...
VS 2010 Create Objects From Strings?
Mar 16, 2012it is possible to create objects from strings.Supose I have a class Matrix with a Row(x) property and an array S = {"One","Two"}. Can i do something like this in vb.net?
For i = 0 To 1Dim S(i) = New MatrixNext i
Dim P As String() = One.Row(0)
'Which gives me the first row of Matrix One How can I create objects similar to this?
An Array Of Objects And Calling Their Methods?
Apr 19, 2009I've been wasting so much time on this. Basically I want to have a list of objects and I want to call some specific methods of some specific bjects..g.MsgBox(Instances(0).Position(0).ToString)It should alert a number that presents the X position, but it is not working... the box does not even appear and no errors.
View 8 RepliesCalling Methods On Interop Objects - VB Vs C#
Apr 7, 2009In C# I'm calling a function on an interop class (Connection, written in VB6), which itself returns a plain object (System). Then there's a function on that object (InitialiseData) that I also call (even though the compiler isn't aware of it). var isInitialised = Connection.System.InitialiseData(path); The problem is, because that System object is returning a mere Object, I get the compile error "cannot resolve symbol". I can see why, but the same thing works fine in VB.NET:
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Methods Of Running The Words Through A Function That Have Created?
Dec 2, 2007I'm teaching myself vb.net. For my first project I am making a md5 dictionary attack tool.I know that there are alot of them but I figured it would be a good way for me to start out.Right now I'm looking for other methods of running the words through a function that I have created.
View 10 RepliesAnything Wrong With Using Lots Of Shared Methods And Objects
Jul 9, 2009I seem to find more and more that I declare a lot of objects or methods as Shared now but it feels like I am not doing things properly.I try to avoid doing this but then I just end up with situations where I have to create an instance of a class just to call one method that would act no differently if it was just a shared method.Basically I'm just wanting to know if there is any good reason to avoid using Shared objects/methods. Obviously I dont declare EVERYTHING as shared, but it just seems to make things a lot simpler most of the time.For example in my current project (a chat application using WCF) I have a class just called Core which houses a lot of the main functions of the client program, so it has methods such as: SignUserIn, SignUserOut, SendMessage, MessageReceived etc and it also holds properties such as a list that contains all of the currently online users. These things are all declared Shared in my program because as far as I can see there is no reason for having to do this:[code]
View 15 RepliesAccess Objects On A Dynamically Created UserControl An A Dynamically Created Tab Page?
Dec 5, 2011I can usually find the answers to most of my questions via the Google Gods, but not this time.I have a form that has a TabPageControl and on that page a collection of labels and text boxes via a usercontrol.
On the form I have a button that allows the user to create a new tabpage, when the code adds a new page, it automatically adds the UserControl collection. I can't get my head around how to access the objects on the newly created tabpage.
What I need to be able todo is take the index of the tabpage that has focus and translate that against the UerContol name, but I havn't a clue how to do it!
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VS 2010 Create Event For Programmatically Created Object
Feb 17, 2011I'm creating a textbox at runtime, which works fine, but now I need it to have a selection_change. How do I do that?
View 9 RepliesOverloaded Vb Methods Not Found At Runtime When Called By C#?
Oct 12, 2010Not sure if this question belongs here or the Interop forum, but here is the situation. I have a vb.net app that was upgraded from vb6. It has an overloaded Login method. A simple method with two string parameters for name/password calls the primary login method with numerous optional parameters. The simple method is for compatibility with C# because, until Visual Studio 2010, optional parameters were not supported.The C# intellisense finds the overload and compiles ok... but throws an error at startup stating that it cannot find the Login method. This makes no sense and appears to be a problem with vb. (I am using .net 4 for both vb.net and the c# test harness.)ILDASM shows the following:
Public Function Login(ByVal LoginName As String, ByVal Password As String, ByVal Alias_Renamed As String, Optional ByVal LoginFrom As String = "", Optional ByVal ClientIPAddress As String = "", Optional ByVal ServerIPAddress As String = "", Optional
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What Are Classes , Objects , A Namespace , Subroutines,functions,methods,properties And Difference Between Byval And Byref
Jun 26, 2010I want to know what are classes , objects , a namespace , subroutines,functions,methods,properties and differemce betweem byval and byref in your words.
View 18 RepliesHandle Events For Objects NOT Created In The Design Tab?
Jan 10, 2012I have created a PictureBox array to hold 104 playing cards that are all visible at the same time.I did this with this line in the declarations:Shared Card(104) As PictureBox
And with these lines in the Form_Load module:
For I% = 1 To 104
Card(I%) = New PictureBox
Card(I%).Name = String.Format("Card{0}", I%.ToString)
Card(I%).Size = New Size(71, 96)
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I have been successful in creating the array, positioning each and entering the images for all 104 PictureBoxes, but now I want to add code for the event "MouseDown.I copied the code for this event from my VB3 program and VB10 automatically updated the list of parameters, but nothing has linked the objects (Card) to the code.
I have tried to append "Handles Card.MouseDown" as well as several variations with brackets to indicate that it is an array.Auto-complete doesn't include "Card" as an option, and of course, since the array was never an object added to the form design, I can't create the empty module from there.
VS 2008 Creating Subroutines For Objects Which Are Yet To Be Created?
Mar 12, 2012I'm creating a list of labels dependent on a few variables based on search results.Say I have 10 search results, 10 labels will be created within a for each statement, however I want to create subroutines for these 10 labels with an onclick event, is this possible
View 9 RepliesVS 2008 : Accessing Objects Created In Code?
Oct 31, 2010I am trying to access objects created at run time.The following code works IF Options Strict is off. If it is on it indicates "Option Strict On disallows implicit conversions from 'System.Windows.Forms.Control' to 'System.Windows.Forms.TextBox'."
Option Strict Off
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim txt As TextBox = Me.Controls("T3")
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I am having trouble formulating the type conversion.A Second problem I am having occurs when I create a groupbox at runtime and then add the textboxes to the groupbox. I am having trouble drilling down to gain access to the textboxes inside the groupbox.
VS 2008 Calling Dynamically-created Objects?
Nov 17, 2009I'm creating a certain number of objects based on some templates that I have available to the user. Then, I have a module created for each template where I will be doing some math operations, etc.
I know how many objects will be created, but of course visual studio doesn't at design time.
Dim newhydzone As PictureBox
newhydzone = New PictureBox
newhydzone.Name = "Zone" & Form1.hydzonecount
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Access Objects On A Dynamically Created UserControl And Tab Page
Dec 2, 2011Access objects on a dynamically created UserControl an a dynamically created tab page. I can usually find the answers to most of my questions via the Google Gods, but not this time. I hope the collective that is StackOverFlow can help! I have a form that has a TabPageControl and on that page a collection of labels and text boxes via a usercontrol.
On the form I have a button that allows the user to create a new tabpage, when the code adds a new page, it automatically adds the UserControl collection, all good so far. I can't get my head around how to access the objects on the newly created tabpage. What I need to be able todo is take the index of the tabpage that has focus and translate that against the UerContol name, but I havn't a clue how to do it! [Code]
Game Programming :: Referencing Dynamically Created Objects?
Apr 26, 2011I dynamically (by programming text, not drawing in GUI) created a matrix of 10x10 buttons named 'Button1' till 'Button100'. In a formula I calculate a number, say '87'. If I next want to reference 'Button87' and change e.g. the background clolor and text properties, how would I do that? I am creating a PocketPC game using VB2005.
View 6 Replies.net Disable Runtime Created Buttons?
Oct 28, 2011i 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?
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DataGridView Behave Different When Created At Runtime?
Jun 15, 2009I am using the follwoing code to generate Menustrip at runtime.
Dim dgv1 As DataGridView
dgv1 = Me.MenuDataGridView
ReadMenuInGridView(dgv1)
Dim MItems As New SortedList(Of String, ToolStripMenuItem)
For Each dgr As DataGridViewRow In dgv1.Rows
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Where the sub "ReadMenuInGridView" passes the DGV by reference and populates it with the menu item from the database. My question is,, the program as it is in the form listed above works fine (where I have a DGV "MenuDataGridView" created at design time), however, if I want to make it 100% dynamic and use a DGV created at run time I will not get the menu? Actually the program will not get in to the For loop?
Simply to do that we can replace the first 2 statement with:
Dim dgv1 As New DataGridView
'dgv1 = Me.MenuDataGridView
Destroy Runtime Created Controls?
Oct 28, 2009I'm developing an app which creates like 30 labels at runtime.The problem is that with the click of a button, I need to destroy those created labels.[code]...
View 17 RepliesGlobal Variable Can Be Created During Runtime?
Jul 16, 2009global variable can be created during runtime?
View 1 RepliesManage Toolbox Created At Runtime?
Jun 3, 2011i just made an form where with button add 10 textbox whith this code:
For X = 1 To 10
Me.Controls.Add(tx)
tx.Visible = True
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now i want write somethings in textbox (i.e. textbox1.value="hello") but no find way, because in code is not defined textbox1, create at runtime (of course).
Movable Labels Created At Runtime
Jan 18, 2010I have a form on which I want to place labels created by code executed by clicking a button(cmdAddLabel) at run time. I subsequently want to move the newly created labels around on the form. The following code sucessfully creates the labels at run time whenever the cmdAddLabel button is clicked:
Private
Sub cmdAddLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdAddLabel.Click
Dim
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Reference TabPage Created At RunTime
Jan 16, 2012Been 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 RepliesRetrieving A Tag Of An Object Created At Runtime?
Dec 10, 2010My
Public Class Form1
Dim x As Integer = 0
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As you can see, i can retrieve the tag of the button (which is created at runtime) without any problems, i've made a temporary msgbox to show me the value of the tag, just for testing purposes. What i do have a problem with, is retrieving the tag of the individual web browsers, how should i do this?
Next issue, how would i code for my buttons to show the web browser with the same tag as the button that's just been clicked?