Simulate A Control Array?
May 28, 2010
Moving some VB6 code to .Net
The VB6 codes makes use of an Array of textboxes and lots of the code manipulates the textboxes selecting the target textbox via the index. This is very good because a small amount of code can reference a large number of textboxes simply by changing the index. To do the same in dot net I'd need a load of code for each box or I'd need to create the boxes at runtime.
But.
I was reading somewhere that it's possible to kind of simulate similar behavior by creating a bunch of text boxes at design time with the usual names names like TextBox1, TextBox2 etc and then referring to them in code like this:-
Controls("TextBox" + n)
Is that possible ? What would be the syntax ?
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Sep 23, 2010
I have a VB.NET program that has a WebBrowser control on one of the forms. I need to have the program automatically access some data on a website, so I need to log in using the available Java interface.
The simplest way to do that seems to be to simply type in the WebBrowser; the Java code will automatically accept that into the correct text field. The program must remain unfocused while this is running, so SendKeys is not an option. Therefore, I'd like to use SendMessageA to tell the WebBrowser I'm typing in it. I've tried using KeyDown and KeyUp as follows (to send the keypress "0", in this case), but that isn't doing it.[code]...
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Mar 6, 2011
How do I simulate a right mouse click on webbrowser control based on a coordinates?
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Mar 6, 2011
How do I simulate mouse click on webbrowser control based on coordinates (x, y).Coordinates of the webbrowser control. I wanna click a specific location on the webbrowser.
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Dec 22, 2011
I am upgrading user control from vb6 to vb.net.In the vb6 application I am loading 3000 labels using a label control array.In vb.net I am doing same but it's taking too much time to load.In vb6 it's taking 1-2 seconds, but in vb.net it's taking 30-40 seconds for same work. Why does it take too much time in vb.net for same work?Code is given below, here Led is the label control array.
For l = 1 To 3000
Led.Load(ledCounter)
ColLed.Add(Led(ledCounter))
[code]....
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Jun 21, 2010
The situation is like this, says:I have textbox1 to textbox20 to show real-time reading, then textbox21 to textbox40 for other purpose. So textbox1-20 can be manage in group through: For index As Integer = 1 To 20 Form1.Controls("Textbox" & index).BackColor = SystemColors.Window Next The problem is, after some time i feel i like to change the order or add/delete few textbox, then i need to change the control name one by one by entering the name by hands(says if i add a text box then its name will be textbox41, then then For loop wont work, Or I deicided to delete the textbox15, forloop wont work either, then i need to rename them manually.)
Question: If there a ways that create a control array in VB 2008 express edition? which can set the name of Textbox1-20 to ButtonGroup then refer to them by says Buttongroup(1) for textbox1? (which means set a group of control in one name)
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Dec 16, 2010
I working on a VB.NET project to manipulate a VB6 form using COM Interop. Some of the controls on my VB6 form are indexed and some not, so calling ctl.Index fails on those that have no index. Is there a way to work out if a control is indexed?
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May 8, 2011
I have an array of picture boxes as so:
Dim pieces(500) As PictureBox
pieces(1) = New PictureBox
With pieces(1)
[Code].....
The program does not crash or anything, but the picturebox is no where to be seen on the form. How to I make this work correctly?
And is 'Control Array' the correct term for this? or something else?
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Dec 26, 2009
I populated a form with several progress bars and added a function to handle a click event via AddHandler. The event fires and I have been able to do things with the control using the passed object 'sender', but I can't for the life of me determine what the index of the control is in the array.
Why is that important to me? Because I want to click the control, have a container of textboxes become visible, and populate them with data from the reference in my database based on what control was clicked, and update that data as needed. Making the container of textboxes visible, and even moving it based on the location of the clicked control in the array are all done and working fine. I just can't seem to get the index of the control.
I need to know what entry (progress bar in this case) was clicked. In the function, I can even do things with a select progress bar using something like pb(x).value = some integer, but I'm trying to find out what 'X" is when the click event fires.
Here are some code snippets...
'Populate page 0 of tab control with progress bars
'TimerCount(int) = number of timer instances active in the database
For x = 0 To TimerCount
[code]....
EDIT: I figured out a work around using the 'name' property, but I would still like to know if what I asked about an index is possible.
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Mar 27, 2012
I have an application with as many as 625 Textboxes in a runtime generated control array.I add textboxes one at a time in a subroutine.The application ran with no problems until the parameters required more than 256 textboxes at which point it slowed drastically as textboxes were added. At circa 400 Textboxes it died with an out-of-memory condiiton.
The system has 8GB & a 64Bit version of Windows 7.It looks like the tooltips are eating up memory, causing excessive use of virtual memory from Hard Disk & finally causing out-of-memory.I am now running the application with a label which flashes when the mouse hovers. This uses the Handler for MouseHover.Is it possible to get a single Tooltip to function for all the Controls in an Array? I would prefer this to using the Event Handler.
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Feb 14, 2009
I'm using Visual Basic 2008 (Windows Applications) and have a webrowser control to access a website. Once loaded the page requests a log on. What code is needed to simulate a log on click?
the html is as follows:
<form method="post"
action="/index.html"
style="display: inline">
[Code]...
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Feb 15, 2009
i want to users to be able to vote for their favourite soft drink. They will input the names of the soft drinks through the use of an inputbox, the names input are stored in an array. what i would like to do is count the votes given to each soft drink. How would this be done, please provide example code if possible.
p.s. i tried using a listbox and failed.Well during the set up of the program they will input the names of all soft drinks up for voting, and then all the soft drinks input wll be displayed in a list when the voting take place.
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Feb 3, 2010
I'm trying to do here is get VB to hold a key down until I tell it to stop. Perhaps I'm missing something but I don't understand why this isn't working. This code can hold down shift and so on for as long as I want it too but absolutely refuses to hold down what i need it too (any letter key or numpad key)[code]
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Sep 5, 2011
Well i've been trying to make something run with a lot less code(and faster) but it seems with SendKeys some things are getting lost(or discarded) by the program, its only the arrow keys as I try & make it complete a pre-defined maze to see how fast it can be completed.
If I use SendKeys("RIGHT 8") for example the maze usually only moves a few times, sometimes maybe only 1.
Also I looked up how to hold a key down/simulate it but it's not working for the arrow keys(untested on other keys).
The only way i've made it work is delays, decently delayed like 200ms & it's a huge maze but if i hold a key manually I can go much faster yet sendkeys method can't go that fast using individual presses this is why I want to simulate a holding down action.
---it must be working xample code I can make it work for my purpose if it works like on button click, etc....but I tried copying full (supposedly working) codes before & they never worked for me/my key, xample cause i've looked & tried hard(with only failing results).
MORE INFO:Also I tried SendKeys.SendWait() which is meant to wait for keystrokes to be processed & that didn't help either so my best guess is the keystrokes are processed but discarded(like a movement delay code that doesn't queue movements but rather ignores extra movements)
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Mar 13, 2010
I have small web app that generate PDF files as a report. I'm trying to delete those generated PDF files after 10 sec that they are generated. What I want to do is to read a folder with PDF files every 10 sec, and delete all the PDF files inside that folder.I read this post of Easy Background Tasks in ASP.NET. The following code is the VB version.
[Code]...
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Feb 25, 2010
[URL]
Damned. Is there a managed code somewhere in vb.net where mortals can simulate key presses?
Is there an e-book or book somewhere about it?
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Dec 4, 2009
Is a way to get the same in VB.net?I've tryed with DrawImage but it doesn't work.
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Feb 5, 2008
i'm trying to simulate a mouse click by code in vb.net i need that mouse click on my webbrowser control
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Aug 28, 2011
I wants to be able to simulate mouse clicks on a WebBroswer in vb.net (even when the program in not on top, it will run in the background) How would I do this? I want it to click on a button every one second in the webBrowser.
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Jan 5, 2011
is there anyone who can tell me how to simulate click on pop up menu? in spy++ the only i got is #32768 (pop up menu) how to simulate click to the first index of the pop up menu. example on windows desktop, when we do the right click there will be pop up menu, right? and i want to choose the "refresh"
[Code]...
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Feb 18, 2011
all is said in the title, how can I simulate the combination Ctrl+Alt+DEL?[code]But none worked. I am working on VB.NET and Windows XP SP3
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Dec 28, 2010
How can you simulate keypresses and releases? I know you can essentially hit a key with Sendkeys.SendWait, but how can your code press and hold q, for example? I essentially wish to be able to call something like press("q") and release("q"). The effect would be the same as physically holding them down.
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Jan 15, 2009
How can I simulate a keyboard button click.For example how can I simulate the button 8 and 9 in another program outside my project form?
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Jun 11, 2011
I've been using SendKeys in a program I am making but its really glitchy and does not work properly.
Is there an alternative way to simulate a key press within code?
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Apr 8, 2011
My app is having problems shutting down in a WinXP environment. I thus want to simulate a Windows shutdown in the VB.Net IDE and then debug my code but is this possible?
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Nov 11, 2009
My problem is that I have this code to paste text from my Web Browser into a richtextbox, but when the text is pasted, a new line is started (as if the text pasted in was a string and then the "enter button was used") So if I consistantly paste in the word "code" for example, I would get[code]...
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Dec 20, 2010
I can think of the following tricks:
Read only wrapper - like ReadOnlyCollection. The friend keeps the pointer to the modifiable object, while everyone else can access only the wrapper.Write delegate - the friend gives the constructor of the object a reference to a delegate as one of the parameters, the constructor fills it with an address to a private method that can be used to modify the object.Reflection - obviously a bad idea. Included for completeness.Multiple assemblies - put your friends together in a separate assembly and set your modifier methods internal.Expose the modifiable object, but add comments to modifier methods "This is an infrastructure method - don't call it!"Nested classes.[code]...
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Dec 12, 2009
I know how to sendkeys, SendKeys.Send("Hello") I know how to hit other keys, Sendkeys.Send("{ENTER}")
But how do I HOLD DOWN the Shift key, I want to be able to highlight text, I know, I need to press the Arrow keys while the shift key is held down...
So... How is it possible to Hold down the Shift key
Oh yeah, and I even know how to simimulate a mouse click, drag, let go, ect. ect...
how to hold down the shift key in VB.NET?
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Apr 15, 2012
been given a key ID, say 76.I need my application to be able to press the button on the keyboard that has that ID, in this case "L".How can I do this?I have tried around with another function that returned really weird results.
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May 19, 2012
Im trying to simulate a web browser click on a flash element and its not working Here is the code that im using. Im using PerformMouseClick("LClick") on the click button but its not clicking anywhere on the browser.
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