I am having a problem with a SQL server query giving a timeout error. I read about setting the timeout value of the command object but in my DAL, I do not see how to do that. Here is how I create the command object
Public Sub Init()
If ConnString = "" Then
Select Case ConnStringID
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I use the following code in a webservice to fill a SQL 2008 database.
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I'm not sure if this is a VB.NET error or SQL Server. But I get the above error with following stack trace:
[SqlException (0x80131904): Timeout
expired. The timeout period elapsed
prior to completion of the operation
or the server is not responding.]
System.Data.SqlClient.SqlConnection.OnError(SqlException
[code]....
provide an example of a client server app using the System.Net.Sockets class that:
(a) supports multiple client connections
(b) that implements some sort of command-response timeout feature (by that I mean, once a client connects the server sends the client a message [e.g. Message A] and waits without blocking communication with other clients for a response. If a response is not received within a defined period it tries again perhaps and if there is still no response then it disconnects the client. If a response is received then it sends another message [e.g. Message B] and so on....Whilst this is going on the server must be able to accept connections from other clients).
If anybody has done something like this before and is willing to share their knowledge I'd be grateful. I've been trying for ages to get the timeout feature working correctly to no avail. I haven't posted what I have already because frankly it's a mess. I tried an ArrayList of timers (one for each client) that I started and stopped as messages were sent and received, but the timer elapsed event kept firing after I thought it should have stopped which may have something to do with the various threads involved with the asychronous communication I was trying to use (I really dont know).
It's really the server end that I'm having problems with because the client app only has to deal with messages coming from a single source. At this stage I don't care if it's done using synchronous or asychronous communication. I've trawled the web for every example I can find and but I can't find one that implements this kind of command-response timeout with multiple clients - i.e. most of them just show how to listen out (server) and connect (client) and how to send a message, i.e. there's no sequence of messages or timeouts.
Sometimes my MySQL-commands hangs forever without throwing any exception. I've tried setting both command- and connection timeout for my connector, but it still hangs sometimes.Does it exist some kind of timeout block? Like, if the command hasn't been executed within X seconds, then continue.
View 2 RepliesWe got a legacy vb.net applicaction that was working for years. But all of a sudden it stops working yesterday and gives sql server timeout.
Most part of application gives time out error , one part for example is below code :
CODE:
It was working and now gives time out in command3.ExecuteNonQuery()
Some information : There isnt anything that has been changed on network and the app uses local database. The main issue is that even in development environment it donest work anymore
I have the following bit of code that is timing out when I pass it a long running set of SQL statements. I'm using the Microsoft.SqlServer.Management.Smo library from SQL Server 2008.
Using cn As SqlConnection = GetConnection(_destinationCNS, True)
Dim smoServer As New Microsoft.SqlServer.Management.Smo.Server(New ServerConnection(cn))
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I'm having trouble figuring out where to declare that timeout duration. What object and property should I be setting the timeout duration for the statement execution, not the connection timeout. On the SQLCommand object there is a convenient CommandTimeout property but I'm not seeing anything like that here.
I'm trying to port an ASP.NET 4.0 data-driven app to a VB Express 2010 Windows Forms desktop app. The ASP.NET 4.0 app uses a SQL Server 2008 Express database and works fine. I can change/add/delete data in the db with the web app, and I can use SQL Server Management Studio to modify the database, but when I try to establish a connection to the same database with the "Add new connection" wizard in VB Express 2010, it tells me that it cannot find the SQL Server Data Provider .The SQL Server provider MUST be installed because otherwise the web app wouldn't work, right ?
View 17 RepliesI am getting an error while fetching the records from sql server to datagridview. Ex. I have 10 rows in datagridview first five are with one table and next five for another table. When loop goes for next table it throws an error like "timeout expired. the timeout period elapsed prior to completion of the operation or the server is not responding. The statement has been terminated."
for (int h = 0; h <= dtgqueformat.RowCount - 2; h++)
{
string avl_subject = dtgqueformat[8, h].Value.ToString();
string avl_chapter = dtgqueformat[9, h].Value.ToString();
[code]....
I am working with synchronizing 2 databases (SQL Express and SQL Compact Edition) using VS 2010. It works fine when the program first running. However the SQL Command "Timeout expired" Exception occurred when the code has been executed for several times. The error message is:
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I am trying to use a COM dll referenced from a vb.net project. Everything works fine when I reference the interop inside the IDE but when I publish the file in bin folder on my server I get:
Retrieving the COM class factory for component with CLSID {A440BD76-CFE1-4D46-AB1F-15F238437A3D} failed due to the following error: 80040154.
I can't register the original dll with regsvr as the server is with a hosting provider and I thought the point of interops was to be able to use old COM dlls without having to register them
i have 2 computers - a Server and a Client pc which is running on local area network with MICROSOFT SQL SERVER 2008 R2 Developer kit at the main pc and Client computer will need to connect to SQL SERVER at main pc using connection string.Let me named server computer as 'MAGNA-PC' and the client pc as 'LAC-PC' and database name is 'db_referafriend' so the code for MAGNA-PC(server) connection string is:[code] i GOOGLE and YOUTUBE for almost 2 weeks before i post . I know that i need to configure the sql configuration manager and enable tcp/ip also add a new port at firewall to allow remote connection also add the sqlserver.exe and sqlbrowser in firewall and I have also chosen "Using both TCP/IP and named pipes" under Remote Connections in the SQL Server 2005 Surface Area Configuration. and all of this doesnt work!
View 10 RepliesMy application requires a user to log in and allows them to edit a list of things. However, it seems that if the same user always logs in and out and edits the list, this user will run into a "System.Data.SqlClient.SqlException: Timeout expired." error. I've read a comment about it possibly caused by uncommitted transactions. And I do have one going in the application.
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I am trying to run a vb application on windows server 2008 64 bit. it has an access database and give the error "system.invalidoperationexception the microsoft.jet.oledb.4.0 provider is not registered "
View 2 Replies"Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding." why i am getting this error message in the loop for the first row its works perfect but when it goes next in the loop and then it call again the function chkexist it gives the massege same error on call the nxtno function
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I am attempting to import data in a batch from an Excel Worksheet to a Sql Server database. Everything works except for the one date field in the spreadsheet. The date returned is off by four years from the value in the spreadsheet. Example: The Excel sheet has a date 10/24/2010 14:18, but when I look at the column in my query, the date is 10/23/2006 2:18. This pattern, 4 years and 1 day earlier, is repeated for every row in the worksheet.
The Excel column comes to me as a custom type, formatted m/d/yyyy h:mm. I receive this from an outside vendor and having them change the column is not going to be my simplest solution.
For what it's worth, the relevent part of the query is:
Select [Date Created] From MyWorksheet
I work with vb.net I have a sqlServer database and i need to migrate to a DBF database.I know that a dbf file sctructure is a hexadecimal text file.I want to generate this file without a provider...building this file with this hexadecimal structure.
View 1 Replieshow to make the provider of sql server 2005.because I have install sql server on 2005 .and I want prepare the sql with visual BASIC 2008 for the dmarch
View 6 Replieshow to creat a client and a server and pass text between them (like a messenger), and it works just fine
so my question is : how do I send a command to the server, for example, open a program (like notpad) or do tasks or search the remote pc or even shutt it down??
note that am not trying to make a trojan or anything like that, I have two pcs and I was just wondering how to do it ?
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.
I am trying to open a socket server, I have the code below but my problem is that when I try to connect as a client to the server using the command line (telnet ip port), i only get to type 1 letter and that's it, i can't do anything else, how can I make it so that the client can send anything until they hit or type EXIT?
Here is my code:
Imports System.Net.Sockets
Imports System.Text
Imports System.Threading
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Iam using sql server 2008. While saving time Iam getting trouble to show the size for varchar(max) field...
From the below Item_Description is Varchar(Max)
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if I could make a tcp server and client so he can restart a game server from a LAN connection. The game server is a test server for online playing games it allows users to test there created maps but after so many errors the program is told to close out the running server cause of errors. The problems are fixed just by restarting the server. I have the client working as far as i know (cant do a full test without a server). During the creation of the TCP client built within the server (to receive commands and send reply) ive used
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I am trying to create a vb.net program that will ask a user to input a beginning date and ending date within two textboxes. I want to use these dates that they inputed in a stored procedure that I created to run a query that will return results based on those dates.
Here is my current SQL Script.
SET NOCOUNT ON
DECLARE @DBNAME NVARCHAR(MAX)
DECLARE @DBNAME1 NVARCHAR(MAX)
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when should a trigger in your head go off signifying "Aha! I should use the factory pattern here!"? I find these moments will occur with many other design patterns, but never do I stop myself and think about this pattern.
View 6 RepliesFirst the requirements: By management requirements, I can't use open source code. I need the users to define their own formulas for a project. My users don't know how to code. The formulas need to be saved somehow, and being read later. I need to debug the formulas written, so I need to be able to see and understand them. The formulas used are quite specialized and specific (actuarial formulas). Adding new formulas (functionality) must be done in fast and maintainable way.
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Using vs2008, vb.net, C#, fw 3.5
I am consuming my service in my client
Service is hosted in IIS
Client(winforms MDI) is generated using svcutil using /l, /r, /ct, & /n switches
Service and client both use a MyEntities.dll
I am using nettcp with TransportWithMessageCredential. I cache the proxy in the main form
if Membership.ValidateUser(UsernameTextBox.Text, PasswordTextBox.Text)
_proxy = new MyServiceClient
_proxy.ClientCredentials.UserName.UserName = "username"[code].....
Could I subscribe to the _proxy.InnerChannel.Faulted and do that clean up there?
Does My.Computer.Network.DownloadFile work with FTP? When I attempt to use it, I get the exception: "The remote server returned an error: (500) Syntax error, command unrecognized."
Here's the code I'm using:
Dim UpdateAddress As String = "ftp://xxx.xxx.xxx.xxx" & lbDownload.Items(X).ToString
My.Computer.Network.DownloadFile(UpdateAddress, BasicPath & lbDownload.Items(X).ToString, "", "", True, 10000, False, FileIO.UICancelOption.ThrowException)
The FTP server is IIS6.
In Motorola MC55, I'd like to get the factory or unique id or serial no of the scanner. How to code it in vb.net?
View 1 RepliesI have set up a process to create new tasks to handle file processing. A problem arised where I received and unhandled exception error and just clicking on the continue button, the main process continued to run. Now I also found that within the child task I was having a file conflict error and as the tasks run as separate .exe i was under the impression that everything would have been thread safe. So for the first issue here is the task creation in the main process..GProcess is a complete project on its own consisting of 6 classes. This is added as a class library reference to the main process class form1
Public Class Form1
..Private parser as GProcess.module = new GProcess.module()
dim factory as new taskfactory
[code].....