Ther time necessary to programmatically switching the cam on for the first time is very long while the next calls are normally much faster.Is there a way to speed up the switching on of the web cam the first time?
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I was currently writting a Cyber Cafe for the client side which start up with a form that maximize and block all the client control like shortcut key and other security. It's fine to work in my pc and it take only about 5 second to startup the application and lock the client. But when i run the application in a pc that installed with games, it took about 40 second to run my apllication. I notice in task manager panel, the process need to read the whole application before it could load my first form. Is there any idea i can speed up my loading time? I have try to set the process priority to "real time" and startup using batch files, but it still need 30 second to load my first form.
View 4 RepliesI'd like to write a simple application in VB.Net using VB.Net Express 2008 (uses .Net 3.5), but it's a bit slow to start on my average computer.
1. When starting a .Net application while no other was loaded before using the same version of the framework, I guess Windows must load the whole framework from disk into RAM. Using eg. Process Explorer, how can I check if the framework is already up and running?
2. Is there a way to speed things up? Is there a way to load the framework at boot time? Pre-compile the application to avoid JIT compiling (provided it makes a difference for a small application)? Other tricks to know?
3. Out of curiosity, is Mono smaller/faster than MS.Net? I don't need more than the basic, run-of-the-mill controls.
I am having a problem updating the network speed in real-time using a timer control. I have tried the code below and it gets the network speed but doesn't update, any ideas why?
Imports System.Net.NetworkInformation Dim myNA() As NetworkInterface = NetworkInterface.GetAllNetworkInterfaces
Dim NetSpeed As Integer = myNA(0).Speed / 1048576
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text = "Mbps: " & NetSpeed.ToString End Sub
[Code]...
im trying to make a cheat for minecraft(speed walk) but im having problems. every minuet i want the clock to go ahead by 2 minuets to speed walk. can someone correct my code? TimeOfDay.AddMinutes("2:00")
View 2 RepliesI created a software which download files from the web. I also added a progress bar which shows the download progress. Every thing works fine.
Now:
- How can I add a label that will calculate the time left for the file to be downloaded and another label that will tell the speed of the download?
- Would it also be possible to add a label which calculates the size of the file that is begin downloaded?
Here is what I declared:
Imports System.Net
Public Class Form1
Dim WithEvents Download As New WebClient
Dim WithEvents Download1 As New WebClient
Friend WithEvents Label1 As System.Windows.Forms.Label
Here is what I have under the download button:
Download.DownloadFileAsync(New Uri("URL" & ComboBox1.Text & ".rar"), Textbox1.Text & "" & ComboBox1.Text & ".rar")
And here is what I have under Download_DownloadProgressChanged:
ProgressBar1.Value = e.ProgressPercentage
Label1.Text = e.ProgressPercentage & "%"
If ProgressBar1.Value = 100 Then
MsgBox("Download Completed!", vbInformation, "Info")
Label1.Text = "0%"
I have a per-call WCF service that serves a number of clients. I'm looking to speed up the services by running some background processes so they don't block or slow down the main function of the services.
One example is that the main function needs to return a set of data, while the background thread needs to record some statistics based on the parameter(s).
Code:
Public Function GetAccountDetails(id As Integer) As AccountDetails
Dim retVal As New AccountDetails
Dim a As New Accounts
[Code]....
If I use this background thread to record the statistic it doesn't block the main thread from returning the data to the client.
It's been working well in test scenarios, but my question is, are there any dangers with leaving this thread to execute without Joining it before returning the data to the client? Could there potentially be any loss of statistic data? Could there be potential memory problems on the server side?
How do i exactly check internet connection speed.I have searched around google and found out a method w/c will Download a file like 1mb size, then it will calculate the speed.
View 1 Replieshow do i check the bandwidth (download speed and possible upload speed) of a user in vb.net or php that uses my app or visits my site resp?
View 1 RepliesI have a codes that calculates DownLoad speed and UpLoad speed kb/s. I would like to implement this kind. I also want to put such kind of graph. Any article or links where can I start building my own like that.
View 2 Repliesi want to monitor the speed at which my system is currently Downloading and uploading. I dont have any idea how will it can be done.
View 6 Repliesi want to check for the lan speed and put this speed value in a progress bar.
for example:
[==== ] the lan speed now is 23 KB/s
and there is another problem is if there are a LAN and a WiFi adapter in the same time how do i check for the speed for both adapters
how would i go about getting the of a fan of a computer that my program is running on in rps(revolutions per second) using vb.net?
View 4 RepliesI came across this Switching from VB.NET to C#?I would be moving from C# to VB.Net. To be more precise, I would be moving from C# 3.0 to VB 10.0 (.Net 3.5 to .Net 4.0). I am initially planning to use a C# to VB converter to cope up with the syntax.
View 6 RepliesI have the following code, which works fine most of the time:
Private Function NormalizeTexture(ByVal Texture As Bitmap) As Bitmap
Dim Out As New Bitmap(2048, 2048, PixelFormat.Format32bppArgb)
Dim Gra As Graphics = Graphics.FromImage(Out)
[Code].....
I have some forms in my application and need to switch between them. I dont want to open another form over other form, in short I want the user to get a feel that he is working on one form only. Right now I am doing something like this but this is not what I want
[Code]....
In my project, I want the abiliity to switch between forms without closing them. What is the best way to do this? I have a "Login Splash Form" that you sign into, and then a Main Menu Form opens in Full Screen. I want this form always to stay open with the ability to open up other forms from this main menu screen as needed.
View 3 RepliesI have 2 listbox's, same locations/sizes (one behind the other). I have 2 buttons, and they just switch the views between the listbox's by changing their visibility propertyThe problem is listbox1, which gets populated first, displays just fine. No code in the program touches listbox2, except for 1 button that adds items. When switching to listbox2 to see the added items, the items are there (verified by debugging and hovering over the added variable), but the text that is displayed won't update. The text that is displayed is the text from listbox1.
View 14 RepliesI am currently working on transferring data between minitab and excel and have everything working out fairly well. I am having trouble getting back to minitab (I can get the initial program to run with the shell commmand). I have tried appactivate, and windows commands but I am not having any luck.
View 1 RepliesHaving had to replace my old computer, one can virtually only get 64 bit Win7 in UK.All my old Visual Studio 2008 + other components installed OK but when I tried to build and run a prgramme that still runs happily on the old machine, I get the following error message
System.TypeInitializationException was unhandled
Message=The type initializer for 'mydata.Colin' threw an exception.
Source=mydata
TypeName=mydata.Colin
StackTrace:
[Code]...
The programme is called mydata and Colin is my User name. Anybody got any idea what is wrong and how to correct it. I have tried to run it in Visual Basic 2010 Express and get the same error.
Hopefully VB2012 will have Gigs of error messages that mere mortals can understand!
I have an application I wrote that is in VB.NET 2.0. Works great, but I'd like to switch this application to Linq. I use ADO.NET to load XML into a datatable. The XML file has about 90,000 records in it. I then use the Datatable.Select to perform searches against that Datatable. The search control is a free form textbox. So if the user types in terms it searches instantly. Any further terms that are typed in continue to restrict the results. So you can type in Bob, or type in Bob Barker. Or type in Bob Barker Price is Right. The more criteria typed in the more narrowed your result. I bind the results to a gridview.
1) Go to Project Properties --> Advanced Compiler Settings and change the Target framework to 3.5 from 2.0.
2) Add the reference to System.XML.Linq, Add the Imports statement to the classes.
So I'm not sure what the best approach is going forward after that. I assume I use XDocument.Load, then my search subroutine runs against the XDocument. Do I just do the standard Linq query for this sort of repeated search? Like so:
Dim people =
from phonebook in doc.Root.Elements("phonebook")
where phonebook.Element("userid") = "whatever"
select phonebook
trying to get my first windows form running with controls. I havent been able to figure anything out. . . and then i realized duh, it's all in VB. How do I switch the generated files to C#? Am I confused? This is what I'm getting when I try to add my first control for Button_Start:
[Code]...
I'm starting to play around some with VB2008.
In VB6, I would write something like this:
rs.open("SELECT * FROM Contacts", cn1)
strFirstName = rs!FirstName
In VB2008, line 2 does not work. How do get to the fields in the recordset?
I am currently writing a program and I have all the windows in three languages. Is there any way of quickly changing through the languages? I mean, I can do it manually but the list has like 500+ languages and I was wondering if there was any keyboard shortcut to switch between the used languages, or any way to put a buttom on the toolbar.
View 4 RepliesI have written a VB 2008 Standard Edition program using a SQL 2008 Epress database in my development environment. When I point my program to the production SQL 2000 database it blows up. With the following error:
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Microsoft Visual Studio
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GentranDataSet.Document_tb.Fill,GetData () could not be previewed.
The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator.
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OK Help
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The tables are "exactly" the same in the two databases... I think.
I have done some reading and wonder if this could be a unicode and non-unicode issue. Is 2000 non-unicode and 2008 unicode?
Can I "refresh" my data enviroment without having to re-create all my data objects in my VB code?
I am switching from listviews to datagrids and one of my listviews uses a sort in it. How can I sort in code using a datagrid?
View 2 RepliesI'm writing a flash cards program to help myself and others study. When the user presses the "New Card" button, I've been able to make it create the new card and jump to edit it, but the dataset/binding source/table adapter is not switching with it, so when you deselect the text box, it switches back to whatever was selected before the new card was made.[code]
View 1 RepliesI set up studio 2010 to work with c and now want to change it back to VB.net but can't remember how I did that. It seems like it was through the tools menu but seem to have forgotten how.
View 3 RepliesI am building a webbrowser using VB.Net 2010, and I am having trouble updating the url when I switch between open tabs using tabcontrol. I am also using a textbox for the address bar.
View 15 Repliesis there a way to prevent the user for changing the Tabs using the mouse?since i want the user to follow a determined path, so i advance in the tabs using a buttom which forwards trought tabs.
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