I'm using a grid and the instructions SendKeys.Send("{end}") whenever I write a letter in a cell, so the cursor places at the end of the cell. It works when I write a letter, however when I write the symbol "/" it doesn't work, and when i get this instruction in the debugger, it freezes.
View 1 RepliesThis line of code freezes on my Win7 dev computer but not my XP dev computer.I am using Visual Studio 2003.
strOutputFile = "c: est.mp3"
I have a VB.Net 2.0 application, on my form I am using a Component ONE PDF reader control.I am trying to send to this control a F4 keystoke to close the navigation panel when it opens the PDF file. It is not working or not accepting the sendkey.I put focus on the control first. Code below:
Me.PDF1.Focus()
Me.PDF1.Select()
My.Computer.Keyboard.SendKeys("{F4}", True)
I have tried different variations of the Sendkeys with no success.
I write a program designed for interacting with an Android phone that is hooked up to a Windows machine. One of the tools in my program is a utility designed to help the user root their phone.Now in order to root it goes through a command line utility called adb which lets you access a terminal on the phone. It must then type commands in that terminal. Most processes that this program does can be done through a batch file, however rooting the phone isn't one of them. The reason being once it actually logs in to the phone's shell, it stops running commands because it just gets stuck on that line, waiting for it to finish. So despite being a little primitive I designed that part of my application to use sendkeys. So the way it should work is:
1) It launches powershell as an adminstrator
2) Types the following commands (I have abbreviated the number of commands it types for the sake of this board. There's actually about 20 lines total): [code]
For the people that have this happen to them, it's always the exact same thing. It's like it completely skips all letters until it gets to a special character. I have no clue what could be causing this. The only thing I have found was that sendkeys wasn't totally supported but that running it as administrator would fix that, which is why I now have it run as admin. But that didn't help. I also had some success by using powershell instead of cmd, but it's still failing for a small number of people.Any ideas what would be causing this? Every other part of the program works perfect except for this. I haven't found any common element between the people that it is failing on. They aren't running the same anti-virus or the same programs. I program and debug on Windows 7 64 bit, yet someone else can run it on the same OS and it won't type it out properly.
Is there any way to send keyboard input commands when computer is locked to a particularwindow
View 2 RepliesVB 2008 Express. I write a program designed for interacting with an Android phone that is hooked up to a Windows machine. One of the tools in my program is a utility designed to assist the user root their phone. Now in order to root it goes through a command line utility called adb which lets you access a terminal on the phone. It must then type commands in that terminal. Most processes that this program does can be done through a batch file, however rooting the phone isn't one of them. The reason being once it actually logs in to the phone's shell, it stops running commands because it just gets stuck on that line, waiting for it to finish.
So despite being a little primitive I designed that part of my application to use sendkeys. So the way it should work is:
1) It launches powershell as an administrator
2) Types the following commands (I have abbreviated the number of commands it types for the sake of this board. There's actually about 20 lines total):
SendKeys.SendWait("mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system{ENTER}")
SendKeys.SendWait("cat /system/bin/sh > /system/bin/su{ENTER}")
SendKeys.SendWait("chmod 4755 /system/bin/su{ENTER}")
SendKeys.SendWait("flash_image recovery /sdcard/recovery-RA-heroc-v1.2.3.img{ENTER}")
Now it seems that for 90% of users, this works perfectly fine. However for a small group of people, this is what actually gets typed in to the powershell window:
> /system/bin/su{ENTER}
_image recovery /sdcard/recovery-RA-heroc-v1.2.3.img{ENTER}
For the people that have this happen to them, it's always the exact same thing. It's like it completely skips all letters until it gets to a special character. I have no clue what could be causing this. The only thing I have found was that sendkeys wasn't totally supported but that running it as administrator would fix that, which is why I now have it run as admin. But that didn't work. I also had some success by using powershell instead of cmd, but it's still failing for a small number of people.
Every other part of the program works perfect except for this. I haven't found any common element between the people that it is failing on. They aren't running the same anti-virus or the same programs. I program and debug on Windows 7 64 bit, yet someone else can run it on the same OS and it won't type it out properly. Is there something better that I could be using instead of sendkeys?
What is the difference between SendKeys.SendWait and SendKeys.Send?Send obviously will just send they key immediately, but does SendWait actually wait for the message to be processed or does it also send it immediately?The function's name itself is just confusing. Which one should I use if I want to send keystrokes to a 3rd party app immediately, or is there no difference? To me, a few milliseconds is a big difference.
View 3 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
CheckBox1.Checked = True
While CheckBox1.Checked = True
SendKeys("{END}")
End While
End Sub
That is the code, the error is "SendKeys is a type and cannot be used as an expression."
I'm looking for the underlying Win32 API call that the DotNET Framework invokes on a SendKeys.Send or .SendWait call, or a Win32 API Equivalent to SendKeys. I've already experimented with SetKeyboardState which seems like the way to go, except that it does not raise any kind of keyboard event that causes the set keystates to register with an active application or the OS (at least not until another key is pressed; for example I can meddle with the keyboardstate before events process on a natural keystroke, but I can't invoke a keystroke programmatically).
View 1 RepliesWhen using Sendkeys with vb.net, is it possible to tell if the target of the Sendkeys has changed between sendings?
View 1 Repliesi have a task to create a TCP Server (a program that is listening on its network card interfaces for incoming data stream).I have search on the internet and i found that i can use two methods : Socket or TCPListener class.I have created an example for Socket class, but i wondering how could i test it? I need to check that if another computer in the network send some string data to the listener computer , then this message should be displayed.Here is the example from microsoft that i am using for TCP Server using Socket:
Public Shared Sub Main()
' Data buffer for incoming data.
Dim data = nothingc[code]....
But it does not work because of the PORT setting.If in the TCP Server i have "Dim localEndPoint As New IPEndPoint(ipAddress, 0)" the client crashes, but if i change the port from any (0) to 11000 for example,the client works fine.Do you know why?
Later edit2:Maybe i should have started with this question:Which method is recommended for my scope?asynchronous or synchronous method ?
I am developing a computer application designed to monitor the network and CPU statistics on a computer remotely. The monitored computer would have my program installed and the monitoring computer would display, in a form, the information being sent from the remote client.The application does not send any information regarding packets, user names, passwords, etc. It is solely meant for monitoring CPU performance and Network resources remotely.
What would be the best method to send this information over to my host machine?I am programing in Visual Studio 2008 on windows XP. The client machine is also XP. I know this sounds a little shady, but it is required for my little business (http://www.iquorum.net) to monitor what and when something happens on our machines when I and my employees are away.
I am trying to dial a computer from another computer using Modem for sending files and messge.Follwoing is the code done in dialing computer
Text1.Text = "Test string from App1 "
Number$ = InputBox$("Enter phone number:", "Number$")
If Number$ = "" Then Exit Sub
Temp$ = Status
[code].....
But after the dial tone, i am getting the exception "CTL_E_GETNOTSUPPORTED " at the line MSComm1.Output = Text1.Text?
i have encountered a problem, i want to access the data coming to the computer from the in-built bluetooth module of a computer on windows platform, this data has been sent by a remote bluetooth module say a by an autonomous device (just like a bluetooth mouse connecting to the computer). The to be sent is in the form of numbers and i need these to manipulate on the computer.
View 6 RepliesI have a desktop computer with a cable connection on the back that allows me to watch TV on the computer using Windows Media Center. I had the idea of writing a program that would access this feed and send it to another computer (laptop) via my network. That way I would be able to watch TV from anywhere that my network spans. I have no idea if this is possible or how I would even do it,
So I have three questions.
1: Is it possible?
2: How would I go about access the feed?
3: How would I send it over the network?
My original thought was doing it in Flash, but I'm not very good at Flash so I wanted to do it in VB.Net.
I need to copy a file from a local computer to a remote computer on the network, if i try to use File.Copy without logon i get the following error:"Logon failure: unknown user name or bad password."How do I provide user name and password for file copy?
View 2 Replieshow can i look up for a specific computer given ip or computer name ...retrieve the user logged on..
View 2 RepliesProblem:When my computer restarts my mapped drive appears under My Computer. When I try to use it from code I get errors. If I open the mapped drive by double clicking it, and then try the code, it works. What I discovered is that when my computer starts the status, using net use, is
[code]...
I have a datagridview which fetches data from a local SQL server. Now, I have a setting called My.Settings.database_url which indicates the hostname of the SQL server.
Now, the problem is that if the host name is incorrect, instead of getting an error, the app just freezes. So what must I change in order to fix that?[code]...
I can grab if keypressed when form active, i mean not in sub procedures..but my form freezes when Going Delay sub.. its working.. no error but cant use any control or event of form while waiting 10 seconds.. (Form's keypreview property set to true.. )
U can use This if u want to wait applicaiton but u cant doing anything when apication in waiting period..
i think i must to check keystroke in this delay sub.. or am i call Delay sub in wrong time.. i mean i call it form activate event.. should i call it another event ?[code]...
Firstly I want to state this doesn't affect the usability of my program. I made a GUI for an old cmd line program and when running the GUI's form will freeze up and be completely unresponsive. This is annoying since you can't move the form and if you open something over the form then move/close it you get the affect in the attached pic. Attached pic is the program running and the windows calculator being moved around over it.
Is there a way I can have the form stay responsive while the program is running? I don't need for any of the buttons, text boxes, etc to be editable while the program is running.
using a backgroundworker to accomplish database update it takes about 30 minsbut when I minimize the screen or someone remote access my computer it cause freeze screen of my application .Although process workes fine and application is running in background but UI is disable and saying "not responding"
View 2 RepliesI have created a custom video player in C#. This player has two forms.
1. The Video Player window ( running in primary (UI) thread )
2. The content playing window (running in a secondary thread)
Everything goes fine for nearly 5-6 hours, then the main video player window freeze. So I cannot access any of the buttons (stop, pause ,exit) in the player. But the secondary thread keeps playing the files for even two days continuously (which is the max I tested).
Things I have checked :
1. There is no memory issue, since I dispose the objects I create after playing each file (few min videos). I have checked the process in task manager, where status is running and memory usage as same as it is started.
2. I have used Begin Invoke from secondary thread to update the current playing file in the list box on the main video player window (once the main window freeze, the update is not visible).
3. I have used a timer in the main video player window and tried refreshing form, calling Application.Do Event() for every few minutes, still it gets freeze up after 5-6 hours.
Why the UI window freeze up? Is my architecture for the player is wrong? (I need to do lots of processing in secondary thread for the images and videos to be played, but it is working fine).
I have an application which runs quite good, only once every X minutes it totally freezes, and even when running debug mode from within the VS2005 IDE, Visual studio becomes unresponsive. After pressing the pause-button to see where the app might be stuck, a messagebox saying "Unable to break execution" might pop-up after a minute or two. My app uses some timers, threads, and threadpool calls. So I'm afraid I got a deadlock somewhere, although I can not find it. Is there any way to find out where my app might hang?
Note: I synclocked every routine with a dedicated object, and for queues or arraylists, I even used the synchronized methods to modify them. I don't use recursive routines, so they cannot deadlock themselves. The strange thing (to me) is that all of my app hangs, none of the threads seems to be running, nor background, nor the GUI and even the VS environment.
I have to create an online application which i can apply it on every employee's computer in my company and i have create the application on visual basic 2008 and SQL 2005 using windows application and database. The problem is i do not understand how am i going to run the application on every employee's conputer. Because i have create the application on my computer, must i install SQL on every employee's computer? or any other software i have to used.
View 8 RepliesHow do you share files from one computer to another that are connected in one wireless internet connection? I mean, it's possible using shared folders this means it could be possible in vb.net too..
View 1 RepliesIn a function I have
Do Until PageLoaded() = True
{
Nothing
}
The problem is it freezes up the program and makes it unusable. I fixed it using timers but it makes my program real sloppy and hard to edit.
I'm trying to find a way to make backgroundworker do what's in the webbrowser. There is a time-consuming part in the webbrowserdocumentcompleted event that I want backgroundworker to tackle. Unfortunately, I don't know how to link that part to backgroundworker so that BW can do that job instead of webbrowser.
Here's what in the webbrowserdocumentcompleted event:
Sub WebBrowser1DocumentCompleted(ByVal sender As Object, ByVal e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
If CheckBox1.Checked = True Then
[CODE]...
The time consuming part starts from line 2 to line 30. My program freezes whenever webbrowser tries to do this job, so I need BW to do this specific job instead.
I am checking if one of the function keys is pressed in the KeyDown event of a TextBox using the following
If e.KeyCode >= Keys.F1 And e.KeyCode <= Keys.F12 Then
'do something here
End If
This works fine, except when I press F10 the cursor in the textbox freezes (ie. stops blinking) & doesn't free up until another key is pressed. Does Windows use this key for some other functionality that causes this behavior?
I have been working on a game engine for a couple of weeks now and when I finally finish and test it the windows form just freezes, I believe it to be the timer:
<System.Serializable()> Public Class Game
Public Sub New(ByVal NewGameHandle As IntPtr, Optional ByVal NewFramesPerSecond As Integer = 7)
GameHandle = NewGameHandle
GameFramesPerSecond = NewFramesPerSecond
[code].....