Call A The Multithread Process In Order To Execute Querry In SQL Server DB?
Sep 3, 2009
I have simple ASP.net web form. With a simple click on a button i need to call a the Multithread process in order to execute my querry in SQL Server DB. I know that my querry willl take up to 45 min to be executed. While the process is running i need to display some status information like: Starting time, Time elapsed, % of completed...So after running the process i got the following error message: "Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding."So i have 2 problems to fix:
Avoid getting timeout while processing/calling the stored procedure. I tried to add cmd.CommandTimeout = 1000 but it didn't work out!
Display correctly Time elapsed and % Completed while processing.
Here's my code in the main form:
Imports System
Imports System.Data
Imports System.Configuration
[code]....
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Aug 9, 2009
SERVER
Im using this code:
Imports System.Threading
Imports System.Net.Sockets
[code]....
but when i tried to run the application, it hangs even if i wait several minutes.., is there something wrong with the code..
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May 18, 2011
The server connects, the clients connect, one client sends a message to the server, and the server broadcasts it to the other clients. But what I want to do now is to also have the server communicate with the clients. But when I click on the server form, it freezes, and I cant do nothing.
I think this is because of me not creating a thread for the communication(I saw this on another forum), but I dont know how to do that. I copied basically all the chat program code from a site, and I dont know much of sockets and what not.
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May 18, 2011
i'm doing a chat for a project, and it works like this. The server connects, the clients connect, one client sends a message to the server, and the server broadcasts it to the other clients. But what I want to do now is to also have the server communicate with the clients. But when I click on the server form, it freezes, and I cant do nothing. I think this is because of me not creating a thread for the communication(I saw this on another forum), but I dont know how to do that. I copied basically all the chat program code from a site, and I dont know much of sockets and what not.
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Nov 15, 2011
How can I use a text box on a multithreaded client so that it will appear in the command line of the multithreaded server?We were given this code to work around/tear apart:
Imports System.Net.Sockets
Imports System.Text
Module Module1
[code]....
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Jan 19, 2012
I've been trying off and on for a week now to get this to work but no luck. I have completely stripped down my vb.net 2008 windows service to just create a vbs file and launch it using a process.I'm dying here. The vbs file creates and is valid. I can execute it manually, the windows service just won't run it!! I'm on a windows 7 machine and the process is compiled and installed as a 32 bit process. It is also installed as local system.
After the process tries to execute, I created a text file and it did so successfully. So, I know that the service isn't crashing out.[code]....
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May 16, 2012
I have a windows service that I have been writing in Vb.Net. As part of this service it calls a class that has a long running Process.I can execute commands to this process when I want to via the ServerCommands() class within the service, however I want to call these remotely. Possibly from a website or click once WPF application.
For this I have used a simple Tcp.Ip WCF example, and have verified it as working correctly.
This called OnStart()Private _serverCommands As ServerCommands
Protected Overrides Sub OnStart(ByVal args() As String)
Add code here to start your service. This method should set things
in motion so your service can do its work.
[Code]...
It appears that in debug _serverCommands is Nothing when it should be running.How might I go about ensuring any command I execute through WCF communicates with the running instance instead of creating a new ServerCommand() instance??I haven't tried WCF before, so I might be hitting a dead end... however I'm sure its possible.
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Sep 9, 2009
I have a classic ADO command which execs a sproc and returns a RecordSet. This is being executed from a VB.NET using the PIA.However when I .Execute the command, the result returned is not an ADODB.Recordset but a System.__ComObject.
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Oct 18, 2011
I need to execute commandpromt process async and get the output of the execution. i currently have this code
Public Function ExecuteCommandSync(ByVal command As Object) As String
Dim result As String = Nothing
Try
[Code]....
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Jun 10, 2009
I am using the code below, but it still shows the program.For example, if I pass in CALCIt will start the calculator but show it.
Code: Public Function ExecuteFileHidden(ByVal lFile As String, ByVal largs() As String) As String Dim oSTR As String = "" oSTR += "Attempting to execute " & lFile & vbCrLf Try Dim p As New System.Diagnostics.Process p.StartInfo.FileName = lFile Dim a As String = "" For Each l In
[code]....
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May 13, 2011
In VB.NET, how do I do the following?
Execute a Stored Procedure
Read through the DataTable returned
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Jun 10, 2011
i'm having trouble opening a text file to process and order the data in it. When i try to read the first line of characters an error message occurs saying: 'Variable words1 is used before it has been assigned a value.' I dont understand what i am doing wrong when opening the file. Also, I am sorry if this is a rather basic question.
[Code]...
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Jul 20, 2010
I am writing an application that is doing a file conversion.I created a new process in order to run an exe and pass it some arguments in order to do the file conversion. I ran this in the Submit button click event.I added an event handler for when the Process had exited and then continued my code, since I had to wait for the file conversion to complete before continuing.
Everything is running fine now up until the point where I am trying to call a FillBy for one of my datasets. My fill by is accepting a parameter UserID and filling it based on the user id, which is selected in a combo box in the program itself.I keep getting exceptions and it immediately exits the program whenever I try and use this fillby method, if I take it out it completes successfully; however, the new row I just inserted was not added.
I tried adding a tryparse for the value selected from the UserID combobox but I get this cross-thread exception, so I have a feeling the 2 are related.
[Code]...
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Mar 22, 2011
I have a midterm project where we must replicate what our teacher has made, it is a convenience store program. I am having trouble calling the functions, he wants us to use these:
PopulateItems => Populate Items listbox based on the category selected
GetItemPrice => Retrieve the price for a given item
GetItemPriceFromPurchases => Retrieve the item price from the purchases list box (optional. You may not need
[CODE]...
So far I have the first list box populated when the form loads. However outside of that I do not know where to call the function in order to populate the second list box upon selection of the first.
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Dec 11, 2010
The string is all correct (minus the RID and pin I x'd out) but the USER would need to add the WEBSITE as show where I have the textbox1.text below
I realize its in Parathesis, so that is not going to work, but not sure how to send this entire string with a new website entered from each user .[url]....
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Apr 29, 2012
This is a bit old-contents to be discussed but I need someone who can explain me how to create stored procedure in SQL Server for returning a value from procedure, example:[code]Then I need the name of its customer and the address instead.I need to make it as a stored procedure and show me how to execute it on VB.NET. Perhaps we assume that the name will be prompted to LABEL1.TEXT and the address will be prompted to LABEL2.TEXT. I've improved this SQL-Server Stored Procedure Using return but I have nothing to return after I execute it.[code]
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Nov 12, 2011
I've been working on this project for about a year now. It's a basic clientserver chat program. After a long time of improvement, I decided to test out the strength of my server.
On the client, I fired off 200 chat messages ("FLOOD# 1"... "FLOOD# 200") to the server as fast as possible. The result: Server immediately crashes. After some slight tampering, I was able to get the server to process 135 of the 200 messages before giving up. It no longer crashes, but something different happens. The data from the client is received in order, but when I pass that message to a function (myForm.OnLineReceived), The data is completely out of order. If I add a slight delay between the calling of the OnLineRecieved function, The messages are in perfect order.
Each message from the client is first encrypted, then encoded in base64. An "-" is appended to the end so that the server can easily find the end of each data "packet".
Server Code:
Imports System.Net.Sockets
Imports System.Text
' The UserConnection class encapsulates the functionality of a TcpClient connection
' with streaming for a single user.
[Code].....
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Aug 8, 2011
I have an issue in my project I am programming in both Matlab (Matlab2011a) and Visual Basic (VS2008).I've created a .exe file from my matlab code. It works well when I click on it with my mouse.But I need to run it within Visual Basic. I know it's possible to call .exe files with Shell() or Process.Start(), and it works well for files such as firefox.exe or notepad.exe. However, it doesn't work when I call my own .exe file ...It's weird because when I look to the Task Manager while trying to call it (within VB), I can see the process starting and ending, but its output doesn't appear.
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Mar 16, 2010
I have been searching for a good code example that will place a small server program on my server and then allow me to use a client on my pc that will tell the server program to run a batch file on the server.
I thought this would be simple... I am finding it not that easy.
We have a server that users need to execute a command on however we do not want them to have login rights to the server so this will allow them to execute the batch file without having to log in.
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Oct 28, 2009
Im trying to execute a winform app from my website (asp .net), this winforms app its execute in the server side for processing information and send email, but i need to pass some arguments, from the webpage i know how to do it, but im asking how to catch the arguments in the winform app?[code]...
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Nov 24, 2009
In my VB.NET code I construct a ODBC.COMMAND to call a stored procedure that eliminates a record from table in SQLSERVER 2008, I use this code in a FOR NEXT loop, it may contain 1 to 20 records_ID to pass to stored procedures to delete the records.
This code work well for several months, but since the last compilation it only deletes the first 2 records.
In debug mode in VS 2008 IDE works fine.
VB.NET CODE
''' <summary>
''' DELETE CANCELED CUSTOMER ORDERS
''' </summary>
[Code]....
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May 12, 2010
If I write
[code]...
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Jun 2, 2010
I've not found any info on this again, i think i asked a while back ago and can't find it. But what I have is an application that stores data in xml files. I read these files in/out through datasets. My question is, can i filter or requerry these datatables in the datasets? and how?
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Apr 13, 2012
I am having an issue with an ASP.Net page I am writing and struggling to diagnose why this page is failing.
I am trying to do this:
Dim st As New StringWriter()
Dim strURL As String = "CourseProgramme.aspx?id=3733"
Context.Server.Execute(strURL, st)
txtNotes.Text = st.ToString()
The aim here is to get the HTML back for the page that has been specified in strURL and then display it in a textbox. However when I run this code it crashes the ApplicationPool in IIS and when I look in event viewer I see this error message:
A process serving application pool 'blueprintdev' suffered a fatal communication error with the Windows Process Activation Service. The process id was '5284'. The data field contains the error number.The strange thing here is that in another page I do this code which works fine:
Dim strDutyStartDate As Date
strDutyStartDate = TextboxDutyStartDate.Text
Dim st As New StringWriter()
[code]....
As far as I can see other than the URL I am passing, which does exist, I cannot see a difference between the two.The page I am developing is in ASP.Net with .Net 4.0 however in the website there are some classic ASP pages. IIS is running at version 7.5.7600.16385 on Windows Server 2008 R2 64Bit.So far I have tried setting the application pool to run in 32bit mode but that causes errors in other areas and the site will not load.
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Feb 7, 2006
I need to download an .exe from the web/ftp server and execute it. (it's a setup program)The application would use the WebClient (probably) class to downlad the files, and presumably would display progress to the user as it goes.
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Sep 14, 2004
I need to download an .exe from the web/ftp server and execute it. (it's a setup program)The application would use the WebClient (probably) class to downlad the files, and presumably would display progress to the user as it goes.
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Sep 22, 2011
im having some problems, when i do my query from my vb.net program to my mysql DB the data is sent, but its missing some things, let me explain.my query is pretty simple im sending a file path to my DB so that after i can have a php website get the data and make a link with the data from my DB, but when i send my data the results look like this.[code]but next time its going to be something else so i cant hard code the paths, i was looking more of a sql query switch that i might not know, since i already thaught about searching my string and if it finds a backslash it adds another one, but i feel its not a good way to script the whole thing..
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Jul 15, 2010
I've search this forum and haven't found the answer to this problem and bing new to VB 2010 [cod]e...
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Sep 18, 2009
We have a Try/Catch block of code in our web application to trap a certain exception. What we want to do with this exception depends on the current time. If it is between 4:30PM and 3:00AM we will want to send an email, otherwise we will throw the exception.
Try
'Yada
Catch ex as WebException
Dim Time As DateTime = DateTime.Now
[code].....
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Mar 5, 2012
I am getting data from an SQL Server database and displaying the data on a Windows form.How do I navigate through the data in a Sequential Order or Sort Order using the the REP_ID number? Example: When I use the navigation to move from one data to the other, can I go from; example: 100001 to 100002 and so on?
Finally is there any hint as to why I am getting the time with the dates? I know it is converted to text but not sure how to remove the time and just get the dates.Here is the entire project code:
Imports System.Data
Imports System.Data.SqlClient
Public Class frmBindingData[code]......
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