Running A TCP Server Script Constantly But With Low Cpu Usage?
Sep 13, 2009
I am using creating a server/client style program, and it uses tcp connections.Now, the server is like this, but it will only listen until it has received its one request. My issue lies in the fact that it only listens till it receives the one message, then closes. The bigger issue, though, is the lag, it will not let me interact with the form in any way until it closes the connection. Is there a way to make it "passively" listen, for lack of a better word? I do not want it to take up tons of cpu.
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Nov 13, 2011
Ive been working recently on a chat. Ive been using FTP to comunicate through both forms but it need to constantly download the new data and make the application freeze. Even with a Backgroundworker. So my question is : is there a way to keep a constant connection between the form and the host? And not LAN ,I mean that doesnt need to be on the same router.
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Dec 22, 2011
Is there a way in VS2010 to monitor net usage, and calculate the current/total download and upload while my application is running?
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May 20, 2009
how can I get the CPU usage in % of a server not for each process but for the server itself?
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Jan 25, 2010
Get the current number of usage days, unique usage days, etc in an evaluation license using CryptoLicensing Generator.
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Apr 2, 2012
Dim connectionString
As
String =
"Data Source=CarSqlServer;Initial Catalog=Msdb;Persist Security Info=True;User ID=sa;Password=whitehouse"
[code]....
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Jan 10, 2011
I'm running into an issue with my application. If the laptop is just turned on and a user opens the application, the application attempts to hit a SQL server to do some work. The issue is that sometimes the SQL Server process hasn't started yet (slow laptop).
What is the preferred method for checking if this is running.
Do I check for it like a normal process?
Do I attempt to make a connection via ADO.NET and catch the error?
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May 18, 2011
I'm trying to make an RTD server unicode compliant. It is written in VB .NET 2003, and to my understanding, Unicode characters are used internally, so no conversion should be required, right?
When I run this on an English Windows xp machine, it works fine, but when testing on a machine with a Portuguese version of Windows 7, a couple of the RTD server's dialog boxes will not open in the add-in section of Excel. Does anyone have an idea why this would happen in Windows 7 Portuguese?
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Nov 8, 2010
I use VB.NET for a Windows application.
How can I find out if the application is now running on a server or client (programmatically)?
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Apr 29, 2009
I have a VB 2005 application running on Terminal Server and I need the IP address, clientname and username from the client system.
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Jan 11, 2011
My app sends an email (see code snippet below) but I want to check first if the SMTP server is running in IIS7.
mySMTPClient.Host = "localhost"
mySMTPClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network
mySMTPClient.Send(myMail)
results.Dispose()
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Sep 13, 2009
Im using a MySQL Server and id like to know the date and time that its running...Here's the query:
SELECT GetDate
But im getting an error saying there's no such field in the database.Everything is fine i know how to connect im just bored writing the code here....Do i have to Execute the query or read it?Im using a Reader...
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Apr 20, 2011
1. load gridview from an uploaded excel file (this would probably be about 300 records or so)
2. compare manufacturer, model and serial No to my MS SQL database (about 20K records) to see if there is a match.[code]is there a better way to find a match between the two?
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Dec 11, 2009
I Need vb.net sample code to run SQL Server Report.
- Would be cool if you could provide:
-vb.net code
- sample showing use of parameters
- switching data sources
- setting credentials
- running a local report using a rdl file ie report file
- running a remote report using reporting services server
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Dec 4, 2009
I have a windows service written in .net framework 2.0. This service installs and runs perfectly fine on both XP and windows server 2003.We have a new 2008 box that we are migrating over to, so need to get this windows service up and running.When i try to 'start' the windows service on the 2008 machine, i get "Windows could not start the <service> service on local computer. Error 1053: The service did not respond to the start or control request in a timely fashion."I have searched everywhere looking for an answer, and all I could find was a fix attributed to .net framework 1.1 for this same error. That; however, is not applicable here, as the service was written in 2.0.
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Mar 4, 2011
I am using Visaul Studio 2010 to build a Windows Forms application to maintain a table in an SQL Server 2008 database. The table is named CASHBOOK and here are the further details:
DATE | DESCRIPTION | DEBIT | CREDIT | BALANCE
--------|----------------|---------|-----------|---------
1/1/2011| CASH BALANCE | | | 5000
1/1/2011| SALES | 2500 | | 7500
2/1/2011| PURCHASE | | 3000 | 4500
2/1/2011| RENT | | 4000 | 500
2/1/2011| SALES | 5000 | | 5500
I can use CASHBOOKTABLEADAPTER.INSERT(...) to insert appropriately, but my problem is how do I update the BALANCE column?
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Feb 2, 2012
I'm looking for a way to get details of the name and status of all services running on a service. I did use the following code:
Public Sub GetServices()
Dim localServices As ServiceController() = ServiceController.GetServices()
For Each service As ServiceController In localServices
If Not String.IsNullOrEmpty(service.DisplayName) Then
dictservice(service.DisplayName) = New Service(service.DisplayName, service.ServiceName, service.Status.ToString)
End If
Next
End Sub
However, since I have packaged up my project as a WCF service, the System.ServiceProcess namespace I used cannot be used: Is there any other way I can retrieve the same details? Possibly through WMI?
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May 17, 2012
I am writing a service to get a count from a table on an SQL server. THe SQL box is in the same domain, and the service is runnign under the same account as the SQL box.
The box service is running on is Win 2008 in the domain. The interesting thing is that when I use this same code and run a normal EXE on that server, it runs no issues. In a service it crashe with:[code...]
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Jun 18, 2012
im currently working with an SQL Server 2008 database and im trying to change values in the database usign visual basic.The following code runs correctly and I have tested changing passwords and have been able to logoff and then back on again using the new password. The problem i am facing is that as soon as the application exits the database returns to its origional values so the next time i run the program the passwords are back to the old values.
[Code]...
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Aug 18, 2009
How would i check a game server is running?
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Jan 22, 2010
ok so i have two "programs" one is a server and the other is a client (a little live chat). i dont want to keep my computer on for it to run the server so i wanted to somehow run it on my online server. is this possible?
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Mar 9, 2011
for some reason this works perfectly, when i do it in debug mode it adds the tasks to stagingtable, and then transfers none duplicates to the regular table. However, when i upload it to the server it does not work.
Using bcp As SqlBulkCopy = New SqlBulkCopy(connstring)
bcp.ColumnMappings.Add(0, 1)
bcp.ColumnMappings.Add(1, 2)
[code].....
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Dec 19, 2011
I have created several small applications that use my own DLL. The problem is, this DLL is constantly changing. My current solution to this problem is that I have a Setup project in the class library solution that creates and registers the DLL. In all my applications I then have to open the solution and re-reference the newly created/registered DLL. Then I have to re-compile their setup projects, uninstall the old applications, and then re-install the new application.
There has to be a better way and I'm just not sure because I'm fairly new to all this. I have looked into ClickOnce but I don't think that will solve my issue as I cannot publish a class library. I have looked into checking version numbers but I must be doing something wrong because it doesn't work either.I understand that once a DLL is created and being used in an application it should essentially not be touched. I do not have that option in this situation. It is constantly updated. Done.
Edit: The DLL is not constantly changing during runtime but it is constantly evolving to allow more functionality and detail within the other applications. Also, one big thing I guess I should have mentioned is the Public interface is constantly chaning - usually adding new methods.
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May 12, 2009
How would one receive a value from a function while it is running?
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May 5, 2011
I am working on a project that reads in data from a device. I am able to read in the constantly changing data only, i need to be able to read in the saved data that is in the device as well.
My question is if the data that is saved in a certain type and i only read try to read it in as text for example, will the saved data I am looking for not be displayed?
ex: im trying to read in text but my device has the data saved in hex, do i see anything or nothing?
idk if this helps or matters but the rs-232 connection is a null modem and im working with VB 2010
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Sep 23, 2010
I have a Windows Forms application created in VS2005 which runs fine on the user desktop but when running in Terminal Server session it frequently locks up when the remote desktop window is minimised and the user is working locally.There is plenty of RAM on the server so this is not an issue, the only solution so far has been to force the user session to log off on the Terminal Server and then reconnect.
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Apr 1, 2010
I know i can run webforms and mvc views in seperate files, but i want to run the web server control output and events in/on the mvc view page, however, i keep getting this compiler error:
Line 38: <CuteWebUI:Uploader ID="UploadPic" runat="server" UploadType="IFrame"
Line 39: FileTooLargeMsg="{0} cannot be uploaded! File size ({1}) is too large. The maximum file size allowed is set to: {2}."
Line 40: TempDirectory="~/UserData/Images/TemporaryImages" UploadingMsg="Uploading..."
[code]....
i don't know what else do do, it just wont recognize the control name when im writing the event signature, right after the "handles" keyword, comes the server control name and then a dot, and then the event name, but as events its just giving me "Me", "MyBase" and "MyClass" options to run events for... doesn't let me access "FileUpload.OnFileUploaded" which is the control name & event name i want to write the sub routine method declaration (and subsequently method) and signature for.
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Jun 19, 2009
I have a running program which is installed in the server side and this program is running 24hrs a day. Now I made some enhncements on this program and would like to publish it. I tried to publish first in my local disk but after publishing Im having some errors "Critical error: Required processing file is missing" after clicking the setup.exe file. Now Im thinking of publishing this directly to my server. If I publish it directly to my server would it disrupt the running program? is it safe to do that? or is there something that I need to do it first?
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Mar 3, 2010
I've developed a VB.NET application with Visual Studio 2008. The application communicates with SQL Server and processes a text file.
My question is about performance. While I run it from Visual Studio 2008, it takes 3 sec to complete. The same is when I run the executable created by the Setup Wizard on my desktop (Windows XP sp 3). But if I run the executable installed on a Windows 2003 Server, it takes 15 sec to complete! What could be the reason of degrading performance on the server vs. the desktop? The .Net framework 3.5 SP1 is installed both on the desktop and the server.
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Sep 13, 2010
I have built a web browser and my new window function is working great, it allows me to open popups that use normal https links without a hassle. But I am having some problems when the links contain java code (like the one below:
("javascript:var%20x=window.open('https://auth.det.nsw.edu.au/pls/orasso/orasso.wwsso_app_admin.fapp_process_login?p_app_id=F0CB644DAE48EDE00D83EFE378FD435E','My_Staff_Email','menu=no,toolbar=no,resizable=yes,scrollbars=yes,status=yes')"
The reason why this operation fails because the string that is being passed to the Navigate method is not an actual URL.It is apiece of Javascript code which needs Javascript engine to process it firstly. Apparently, Webbrowser.Navigate() does not have this functionality,so it fails. If you simply put the string in IE�s address bar and press enter, IE will also not able to open it. The reason why it does work if you access the HTML page in IE and click the hype link is because this will make IE to use Javascript engine to process the code.
Since the API(Webbrowser.Navigate) does not have the functionality to process Javascript code,build up my own code to process the string which you get by using the GetAttribute method. The code reads the string and finds the actual URL and passes it to the Navigate method.
The only problem is that the javascript code constantly changes (varies upon what link is opening) and the url itself will change depending on what the link is linking to! Below is the code that I use at the moment to get the full link .finding the actual URL in the javascript even with the javascript differing from link to link).
Dim myElement As HtmlElement = CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Document.ActiveElement
Dim address As String = myElement.GetAttribute("href")
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