VS 2010 Create An Object In Run-time?
Sep 22, 2011
hey guys i need a code that shows me how to make program create an object in run-time...(if this line is clear enough dont read next cause i did even confuse what i want)
the best example i found is dividing procedures..lets assume i did a calculator which also can show the calculating in a picture....when a user use dividing a line has to appear between two numbers(like: ___) and how can i create that line in run-time...
. i was using visible property to do that but when theres a lot possiblities ... its easy to that in run time but i dont know how..
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Feb 3, 2009
I want to allow my user to add certain small pictures into a form which has a bigger pictures. My idea is to simply allow the user to move small pictureboxes that is set on the top of the form to wherever she wants it to be. My problem is that she may want more than one instance of the same picturebox. I am wondering if I can create a picturebox (complete with the picture) during run time?
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Jan 9, 2012
I havn't got any test code for this, as i dont know what way i am going to approach this yet.
at the moment i have a groupbox on a form with 3 radio buttons.
what i would like to happen is when a radio button is selected for it to display a panel with a few controls on it.
i am looking to know what is the best way to code this, i have read a few guides on creating objects at runtime, but none of which i have looked at have any information on adding objects to the likes of a panel.
i am thinking that their are probbably 2 way to attempt this.
my logical thinking tells me i should either
1) Create a class will contain the controls and subs that i need and then try to load the class when it is needed.
2)create a control array then try and work with it that way.
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Sep 6, 2007
I am getting a run-time error within my VB app:
Run-time error '429': ActiveX component can't create object
I have run this application under WinXP and previous Windows operating system fine, but when I installed my application on Windows Vista I get the above error at run-time.
how I could resolve this error as I believe it is not a programming error as the app works on other Windows OS's fine. Could it be something to do with registering dll's etc.
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Feb 1, 2012
I am getting a run-time error within my VB app: Run-time error '429': ActiveX component can't create object. It goes away after IIS reset.
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Oct 26, 2009
I don't know if I stated what I mean in the subject correctly, but I'm making a parsing engine similar to XML so I can implement it in my programs. What I need to know is how to make a new thing like how with XML you can declare a new XMLDocument, like
Dim XDoc as new XDocument
OR:
Dim NPoint as New Point(10,35)
With my parsing engine, I'll have a document type called EDocument and I want to be able to declare string as an EDocument like this
Dim MyDoc as New EDocument()
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Apr 12, 2012
I have a process that recieves a request and issues a response. Sometimes createing the response is taking too long. I would like to start the request, and after 8 seconds, if the response has been created, I would abort the process and send back a generic message.
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Jun 3, 2009
Source File: MathNet.dll
Output file: MathNet.tlb
Included Classes MathNet.Division and MathNet.Multiplication
[code].....
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Jul 12, 2010
I have a Picturebox, where the .Tag property is holding a path to a file. But I would also like to have something like a .Tag2 property that could hold another file... I'm guessing this is possible to achive, but I have been struggling with this for quite some time now, and I really don't how I to do this... I can't seem to any useful information on the net either...
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Feb 17, 2011
I'm creating a textbox at runtime, which works fine, but now I need it to have a selection_change. How do I do that?
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Mar 30, 2012
[Code]...
I want to create a ProgressBar with my array length, whithout timer object. When ProgressBar increment, the value in array appears in a label.
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Oct 26, 2009
I have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?
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Jan 12, 2011
I am trying to write an VBA application in Excel 2010 using "Microsoft Soap Toolkit 3.0" on 64 bit Windows 7 to consume an web service. But i got an error while initializing an object of SoapClient30.
Error message is :: Runtime error '429' :ActiveX component can't create object.
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May 3, 2011
I was create Access database with Access 2003. I create VB project with Visual Studio 2005 Standard With connection wizzard I create coonect with this Access database, select all tablesI see this database inside Data sources and inside Server explorer Test connection is OK When I drag and drop table from Data sources, Wizzard don't create DataGridView, DataSourceBinding etc .. and I see popup window with mesage: Object reference not set to an instance of an object and then "game over"
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Sep 21, 2009
Under component services, a COM+ component is used by the company, right-clicking it and choosing 'Activation' tab will show the 'constructor string' that is used for DB server connection by all applications. How can I access it the simplest way possible?
[Code]...
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Nov 12, 2010
I have a class library that contains a number of classes. I would like to dynamically create an instance of one of these classes, set its properties, and call a method.
Example:
Public Interface IExample
Sub DoSomething()
End Interface
Public Class ExampleClass
[Code].....
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Sep 2, 2010
I am curious on how to do this....
I wanted to display a clock on my app, to display both AM and PM time.
Then i have a few items that i can specifi a time, like 3:15AM and have an event fire at that time...
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Jun 3, 2009
i have drawn on a e.graphics object and now want to transfer the drawn stuff onto a bitmap object how can i do this?
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Apr 12, 2006
I am developing an IT Asset Tracking application using VB 2005 and SQL Server 2005 Express edition. Will I need to create classes to represent objects such as Computers, Printers, Scanners/Faxes, Contracts, Purchase Orders etc or are there any other approaches.For example, if I am correct, I will have a class called Computer and its properties will include Make,Model,CPU,Hard Disk,Memory etc. Is this the right approach.
Computers can be split up into Desktop PC's, Servers and Notebooks. Would I have to create separate classes for these as well or would they be ok under the Computer class.Once I create an object from the class, how can I use the object to interact with the SQL db.I am a beginner to VB.NET 2005 therefore I am slowly getting to grips with OOP.
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Nov 28, 2010
I want to create a class is it where I can do...
[code]...
How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?
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Nov 12, 2009
I just want to create an service which will on start read my XML file .It gets the number of parameters connected to PC. I just want to know that is it possible to create the timers at run time in my service and the timers should start at the same time but will having different time span to exicute means one timer will start after every one minute while another after 2 or 3 or whatever i set.
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Mar 27, 2011
I'm writing a report scheduler that is somewhat of a clone to the backupexec scheduler and the layout can be seen in post #10 here: [URL]..It works great and saves/edits/deletes records just fine, but now i need to compare those records one at a time in a windows service that i'm writing in order to trigger automated report creation and emailing - i already have the report and i already have the code for the emailing, i'm just looking for the most efficient way to loop through the table (that i've pulled in to a dataset) and compare its records with the current date and time - if true, the event fires.
[Code]...
1stSun, 2ndSun etc are bit fields, time is a datetime, and the remainder are varchar. My service checks the database every thirty seconds.The english version of what i'm trying to do is "Connect to the database, grab the entire table (it will always only have 5-6 entries max, so i felt 30 second sweeps was okay), and If today is the 1st Sunday of the month, and it is currently 11:00:00 a.m. (could be any day or time, this is just an example) - loop through the dataset to identify if any records match the time field or greater - if they do, fire the report
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Feb 29, 2012
I am attempting to create a new mobile app using VB in visual studio 2008. I select "File" "New Project". Select "Smart Device" in new project window. Select the "Smart Device Project" from templates. Select ".NET Framework 3.5". Select "OK" and get the dreaded "object reference not set to an instance of an object"
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Feb 8, 2011
I want to learn how to rotate an object by direction and speed and also how to move an object using the arrow keys?
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Jan 18, 2011
I'm using the following code to try and search a listview (I got it from msdn):
Dim atem As New ListViewItem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then
ListView1.TopItem = atem
End If
Then I got the " Object reference not set to an instance of an object" error highlighting the following line: ListView1.TopItem = atem So then I tried this:
Dim atem As New ListViewItem atem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then ListView1.TopItem = atem End If it still isn't working.
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Oct 16, 2011
I am struggling with the following - I try to add a value to a list, where the list is defined in a structure.
[Code]...
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Jun 22, 2012
I get error (Object reference not set to an instance of an object)trying to read a reg key, it stops after the first msgBox which shows MyRegKey value it shows a blank value
Dim MyReg As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(Microsoft.Win32.RegistryHive.CurrentUser, (OldPCTxtBx.Text))
Dim MyRegKey As Microsoft.Win32.RegistryKey
[code]...
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Nov 18, 2011
I have a treeview with a contextmenu. I'm trying to disbable specific items in the contextmenu when the user doesn't have a node clicked, but each try gives me the same error: "Object reference not set to an instance of an object."I tried several methods in the Mouse_Down-event (IsSelected, etc), this was my last:
If .Nodes.Count > 0 Then
If .SelectedNode.Text <> "" Then ' <<< this line is highlighted
enable_expl_mnu() ' enable the contextmenu
[code]....
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Jul 9, 2010
I get the error, Object reference not set to an instance of an object., on:
vb
For Each comboItem As String In My.Settings.ComboBox1
That code is in:
vb
Private Sub Me_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
For Each comboItem As String In My.Settings.ComboBox1
[code]....
I am trying to get it to load those settings when the program loads up, VS does not report that program till i attempt to run in debug. Before the program is even loaded that happens.
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Dec 15, 2011
how can i modify my object at run time? I have a form containing two panels; textbox, picturebox, and a label are in the panel1 where as panel2 is likely to be the user screen.. User drag the textbox from panel1 to panel2 and it is added there.. Now, i want to provide the facility to the user to modify the size using mouse similarly as we use to modify using mouse while making our forms.. It is like re sizing the button or picturebox at run time.
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