Design A Report Request From Client Machines To Be Run On An Available Server?

Sep 29, 2009

I have a 2.0 winforms project that is full of all kinds of business reports (generated with Excel interop calls) that can be run "on-demand". Some of these reports filter through lots of data and take a long time to run - especially on our older machines around the office.I'd like to have a system where a report request can be made from the client machines, some listener sees it, locates a server with low-load, runs the report on that server, and emails the result to the user that requested it


Connect Client Machines With Sql Server Machines?

Dec 7, 2011

How to connect client machines with sql server machines ?Vb.Net as front end.

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Run On Client Machines From Central Server

Jun 11, 2011

I have created an application using ODBC data runs on a local machine well. but i want it to run on client machines from central server. the following is the code that i use:[code]where cleaners is a data source i have manually created in ODBC data sources.and then uses the connection for inserting,deleting and so on.can somebody help me with a code that can enable it access the remote machine.

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Connect To Oracle 10g Server From Client Machines?

Mar 9, 2010

I have installed Oracle 10g in one of my office's computer. I want to keep this as database server. I am developing a .net project which will communicate with the database server from client machine and from the server machine. I success to communicate with oracle from server machine but not from client machine using the .net project. The connection code is as follows:

Public OraConn As ADODB.Connection
OraConn = New ADODB.Connection
OraConn.Provider = "OraOLEDB.Oracle"


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Minecraft Server To Client Protocol / 18 Byte Packet On Login Request

Feb 6, 2011

I'm working with the Minecraft Server To Client protocol documentation for a server I am making.It says the packet is 18+ bytes, but I can't seem to figure out what each byte is for.

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Crystal Report In .net 2008 On Local Machine And Server With Design Differences?

Jan 29, 2012

i have a vb .net 2008 console application that generate a pdf based on a report made in crystal report (.rpt) developed on a local machine, it work fine but when i installed the same application on the server and its opened in the vb .net 2008 installed in the server the fonts looks differents (they both have arial inline, i dont use cssclass on the project) and some controls have different sizes, so i have to make differents changes in the proyect.I check the crystal report.engine dll and are the same in both vb. studio why it presents the differents between the applications?


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Deploying On Client Machines / Particularly .NET Component

Oct 1, 2009

This question is about deploying a VB6 application that uses an interop component created in VB.NET, specifically, a .NET dll.Using Regasm.exe, I was able to create a .tlb and use it on the dev machine to add a reference to the VB6 project, but how do I go about deploying on client machines, particularly the .NET component?

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Dll - In .net Application AxWindowsMediaPlayer Does Not Work On Client Machines?

Jan 23, 2011

I have added COM control AxWindowsMediaPlayer to form in just have following code

Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
WMPlayerVideo.URL = "abase.mp4"
End Sub
End Class

abase.mp4 file is kept in directory where exe is there. Every thing runs fine on dev m/c but on client machine application is not lauached.When Interop.WMPLib.dll and Interop.WMPLib.dll are copied to the exe file directory then application is lauched at least but file is not played automatically and even on pressing play button its not played.Is some dll registration required to make it work? or some references needed in project?or some changes on user machine?

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Error In Some Client Machines With Microsoft.mshtml

Jun 7, 2009

I have a .NET application which is using the Microsoft.mshtml PIA. It frequently experienced exceptions with a message saying that the Microsoft.mshtml assembly or one of its dependencies is missing. Weirdly enough, this happens on some machines, but works fine on others! (actually, it works fine on the majority of machines)


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Sending Messages Between Client Machines On A Network?

Mar 15, 2012

i have several clients on a LAN network, these clients all have access to a particular sql server. i want to write an application that allows any client on the network to send one or more messages to another client on the network providing that both clients have access to the specified sql server.

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VS 2008 TCP Server / Client - Client To Send The Server 4 Numbers - Depending On The User's Choice

May 9, 2009

how to create a client/server... But I couldn't... I don't want anything fancy. Just want the client to send the server 4 numbers, depending on the user's choice; after that, the server would turn off the pc, restart it, etc. It all depends on the number received. Is there a rather "simple" way to do it? If it's not to much trouble you could use Atheist's example. (Btw I don't understand the code and, yes, I've checked on [URL])

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VS 2010 : Send Data From Client To Server (encrypted) And The String Sent From The Client Is Not The Same As Received From The Server?

Jun 27, 2011

Hey guys, I am trying to send data from client to server (encrypted) and the string sent from the client is not the same as recieved from the server. I've been killing my brain for hours to get this to work but I cant manage. Im converting everything to Base64 string.


Public Sub SendMessage(ByVal msg As String)
SyncLock myclient.GetStream
sw = New IO.StreamWriter(myclient.GetStream)


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Deploying Winforms Application To Client Machines Failing On Start

May 5, 2012

This is a VB .NET 4.0 WinForms application. There is a mysql data-source involved with this project. The target CPU is set to any. Problem: When running this application on any computer that has VS 2010 installed along with the mysql connector it runs flawlessly. When installing on a virgin system(ie. No developer environment installed) but that machine does have .net framework 4.0 installed and a mysql server without the connector installed the application falls immediately. So to fix the issue I install the mysql connector MSI.

This immediately fixes the issue on the client system and it runs. The problems is that as you can see below from my Installer setup that the 2 needed DLL files for MYSQL are actually included in the installation package so should not need to be installed separately. So Why is it that using that installer from the images do I need to install the mysql connector? Any Ideas?

Below is a screen shot of the References the program uses and from what I believe I do not need to deploy any of those DLL files with my application other than the 2 MYSQL DLL files. So why is this failing? Below are images showing the project references as well as the Installer Files that are being installed in the application folder. As shown in the image the 2 mysql dll files are to be put in the application folder. There is also a screen shot showing each dll's properties for in application folder.

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Client-Server-Client Multithreading - Instant Message Another Client

Jun 21, 2010

We are creating a Who wants to be a millionaire style game in VB. Our server is pulling information such as questions and answers from a Access Database and sending them to the contestants (Clients). All transfer of information is directly from the server to each client. One of the "Life Lines" we want to use is "Ask a friend", where one client is able to Instant message another client for a short time to get help on the question.


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Create Client-server App, In Which Client Can View Files On Server?

Nov 15, 2011

basically i just want client to say "C: emp" ENTER

then, server must reply with all its files in c: emp

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Communications :: Client-server Communication Program - Click On CmdListen In The Server Form And CmdConnect In The Client Form

Jul 23, 2008

The problem I have is: When I click on cmdListen in the server form and cmdConnect in the client form,both programs won't respond and they crash for some reason I don't know.

Client source code:


Imports System.Net.Sockets
Imports System.Text
Public Class Form1


Imports System.Net.Sockets
Imports System.Text
Public Class Form1


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Wcf - Soap Request Client To Webservice Using .net?

Dec 28, 2011

How do I send/Receive SOAP messages usiung .NET I wanted to invoke a webservice, however not like the way shown in the link above.What I did was, created a service reference with the wsdl url(in a windows application with a button click event)


have created a client object

Dim objProxy As MyClient = New MyClient()

I have populated the objrequest and objreqheader using the below methods, (assigning string values and not xml) = "abcd"

Finally the below line invokes the service

objresponsehead = objProxy.myoperation(objreqheader, objrequest, objresp)

From reference vb, this is the myoperation public function

Public Function myoperation(ByVal RequestHeader As AFA.RequestHeaderType, ByVal GetTransactionDetailsReq As AFA.GetTransactionDetailsReqType, <System.Runtime.InteropServices.OutAttribute()> ByRef GetTransactionDetailsResp As AFA.GetTransactionDetailsRespType) As AFA.ResponseHeaderType


I checked the property of objProxy, it is having basic http binding as the property. Anyone invoked the service like this? From soapui, the response is fine, after i populate the request fields.How can i enable the trace to see what is the request going and where is the problem.

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Xsd - Request Generation In Soap Client?

Mar 3, 2012

Take the tripservice wsdl from this link In this wsdl, I replaced the from element with the below(added nillable as true and added min length and max length restriction).


The element from xsi:nil="true" is generated, even though i am not touching the element in my code to generate the request. The element is optional as per the wsdl(min occurs = 0). How can i send a request without the from element name, even passed in the request?

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Server/Client - Basic Tcp Server/client Application

Mar 30, 2009

I've basically made a basic tcp server/client application. The thing is that I'm behind a router and so will be the other people that use my clients. I've had to use port-forwarding or the software "rinetd"to run quite a few applications online.

Let me explain: I'm on a lan network that connects to the internet. Whenever I want to host a server - for instance a basic ftp or http server. If I give my external IP to anyone, they won't be able to access my server. Even if I portforward, it doesnt work. I have to use rinetd here. For other applications, portforwarding works. I'm not sure how these things work at all.

Anyway, my issue now is that I have created this server/client application. I'm having serious doubts that if I run the server, I'll have to either a) portforward or use rinetd to get people to connect to my server. IF I need to portforward, that's fine. However, using rinetd would really suck... My 2nd concern is as follows: IF the person running the client is in a similar situation as me (i.e he's on a lan that has a router which connects to the net), will he have to portforward or use rinetd as well? If he portforwards that's fine. But I don't think I could get people to use rinetd.... Also, if there are more than 1 person on a lan trying to connect to my server, there is a big problem when they try to portforward: they will only be able to allocate one of their internal ip to that port, and the others won't be able to connect, right? How does this work? I mean, I use many softwares like msn/skype/(some games)/firefox that do not need portforwarding/rinetd. Yet they work. My housemates(other people on the lan) use the same softwares, and it works fine. There's no clash/probs watsoever How come these run fine?

Anyway, back to my issues. Given I have no knowledge about how the above work, I was wondering whether there was a way to host a vb .net server application on an external website (external to my house) so that I might *avoid* the above mentioned problems, and to what extent that would be a sound solution.

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A Potentially Dangerous Request.Form Value Was Detected From The Client?

Apr 3, 2009

I have a form that have many text fields and all are being validated, I also added the NiceEdit plugin to be able to format text in my text areas, but it is raising errors like:

A potentially dangerous Request.Form value was detected from the client Now I can simply go to the top of the page and in the page directive add ValidateRequest="false" but this will deprive me from all the validation that I really need, so how can I switch validation OFF for my text areas ???, 3.5, VWD 2008 Express...

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Deploying Winforms Application To Client Machines Application Failing On Start?

Jul 2, 2009

Deploying Winforms Application to Client Machines Application Failing on start

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Writing A Program With 1 Client And Server Where Client Side Creates A Text File

Dec 1, 2008

I have been reading through Atheists posts in regards to client-server and TCP client/server connection's. But how do i go about writing a program with 1 client and server where the client side creates a text file.Once the server sees there is a text file it connects and downloads it to itself or the client pushes the text file to the server.Once on the server i will read the text file and put its info into a sql db.

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.net - Error - A Potentially Dangerous Request.Form Value Was Detected From The Client

Feb 4, 2011

why I am getting the following error? I have debugging enabled.Server Error in '/' Application.A potentially dangerous Request.Form value was detected from the client (strContent="<p>test</p>").

Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (strContent="<p>

Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

<%@ Page Language="C#" Debug="true" %>


2) Add the following section to the configuration file of your application:

<compilation debug="true"/>


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VS 2008 Chat Server/client - After The Client Clicks Disconnect Or Closes By Task Manager, Looses Connection

Aug 18, 2009

Im using the code from [URL] as a starter, most of the code is the same. the chat system works fine but on the client a added a disconnect button "clientSocket.Close()" and as soon as i click that i get errors, on the client, this is the code...

Private Sub getMessage()
For infiniteCounter = 1 To 2


And this line...

serverStream.Read(inStream, 0, buffSize)
gives me "Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall."

Now im talking the server, after the client clicks disconnect or closes by task manager, looses connection, etc the server crashes and gives me.

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Request Server Variables From Within A Simple HTTPListener Web Server?

Dec 27, 2010

I am trying to use an Asynchronous HTTPListener to create a simple web server in VB .Net (Not ASP) This will be run as a desktop application. My only goal is to be able to request Server Variables from the client. Is there any way to do this from within a HTTPListenerWebServer? I am using the code from the MSDN VB .Net Samples:


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MVC3 Json: A Potentially Dangerous Request.Form Value Was Detected From The Client

Nov 8, 2010

I use... $.post("/StoreHtml", { 'html': $("#txtHtml").val(), , function (data) { }); to store html user enters, but method above fails with an "A potentially dangerous Request.Form value was detected from the client". How do I encode the html before sending it? ... and how do I decode it in

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Chat Client To Client Without Server Just Use IP Address For It?

Apr 19, 2012

Chat Client to Client Without Server Just Use IP Address For it?

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ALTERNATIVE OF RESPONSE.REDIRECT - Client.openRead To Send Request And Passing Line Through Finalurl

Nov 21, 2009

I am using a client.openRead to send request and passing line through finalurl.

Dim data As Stream = client.OpenRead(finalurl)

Now my server blocks ports and i am getting error on this line now is there any other solution to client.OpenRead and what ever i am sending throught this is code is going on other company's server so i can't tell then to change their way so is there any other solution to this?


Dim data As Stream = client.OpenRead(finalurl)

And in final url i have other sites url and some querystring data

For example

dim finalurl as string= [url]

I already use WebHttpRequest but it not works still server not allow it.But i try it with response.redirect and it works but not suiteable to my conditions.i want control on my site so i was using Dim data As Stream = client.OpenRead(finalurl) but now server block some ports due to some reasons

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Design An OPC Client - Documents Regarding Automation Wrapper

Apr 23, 2010

I am actually abeginner in OPC world. I wantto design an OPC client using VB.Net, so in this regard i want some documents regarding automation wrapper. Also i have collected some codes from internet and stuck in some command like additems etc (Need some explaination regarding fuction of OPCAutomation Class), so i need some documents which can help me in this regards.

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Design Report At Run Time?

Jan 16, 2010

I work with VB 2008

I need to design my reports by users

please tell my the best way,or the best report type

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How To Design A Report To Be Printed

Feb 5, 2010

how to design a report to be printed. I have a table of data, and some textboxes with more data. I save this to a file using binary formatting (it's a small amount of information).I want to be able to print this table and data onto paper but I cannot work out how to do it.Do I have to use graphics to design a report? Do I then add the data?Basically, I want to be able to add a table of data and the other sections of data to a report and print it?

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Design A Report And Insert Data Into It?

Aug 22, 2009

I�m working on a project that saves records to a datatable/dataset. I then serialize the dataset to save it, and deserialize to show the records in a datagridview, I add more records, serialize, deserialize etc etc. � I�m using binary formatting. I added the dataset/datatable from the toolbox and selected �untyped� for the dataset. I want to print out this table and other text. Do I need to draw a report using graphics on to a page and then programmatically add the data from the deserialized file, or is there a better way to design and add data to a report? I�ve looked at crystal reports and report viewer and I cannot see how to programmatically add data using them � they both talk about connecting to a SQL or ADO database which mine isn�t.

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Developing Enduser Design Report?

Feb 10, 2012

I am new to VB.Net. I need to develop enduser design report (creating movable, re-size controls like textbox,dropdown)i.e when end user click create text box button a text box should create on the report editor grid(like listview with grid or any other, i dont know even how to or which control will have vertical and horzontal grid lines)Please give me idea how to develop it in Microsoft components i need to use.i saw an application like this it looks very simple when user click design template buttona window opens with an editor with horizontal and vertical rulers. on the top there is a menu control with menus like Add text box, Add label, add muliti select, Save.

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Report Screen Layout Design

Apr 27, 2011

i am in the process designing the screen of a report form.I would like to have the Report selection (button, search criteria) on the left hand side and crystal report on the right hand side of the form.My idea is such that:Report Selection take up 30% of the screen and Crystal Report take up 70% of the screen.User are able to view the crystal report immediately after they have filled in all the search criteria and press the OK button.My purpose of doing this is to avoid to have another pop up for crystal report.Is it possible to do so in VB.NET?

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Design Crystal Report To Print On Id Card?

Jun 6, 2011

am designig softwear with 2008 and mssql server 2005 express that can print on id card. i have the query written correctly that can retrive employee info. including the picture on a question is how to set the report to automatically pick the size of the small id card.

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Winforms - Report Design Editor When Program Is Running

Jan 25, 2012

I'm trying to do a Report Designer for end user. Like the one that adds when u add to proyect a .rpt file. But i wanted to do it on the run, so the end user can change the desing of the report as they want.

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VS 2008 Multi-User Chat Program (Server & Client) With Main Server?

Aug 10, 2009

Multi-User Chat Program (Server & Client) with Main Server?

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Clinet/server The Server Broadcast Media Files To Client I Used Tcp/ip Protocol?

May 13, 2011

i have 2 application clinet/server the server broadcast media files to client i used tcp/ip protocol the server code is work good but i have a problem in client code i need ineed someone to correct the code .iwll show where the error is in the code note: i call the class in the main form dim a as recive in the starter of the main form class to be gloable .


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SQL Server 2008 Configuration For Client Server (Windows Form) Application

Apr 6, 2012

Case : I'm creating an application (desktop application) with VB.NET (actually windows form), and using SQL Server Express 2008 for its database.


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The SMTP Server Requires A Secure Connection Or The Client Was Not Authenticated. The Server Response Was 5.5.1 Authentication Required

Nov 28, 2009

This emailing code wont seem to work in my program. I get an exception "The SMTP server requires a secure connection or the client was not authenticated. The server response was 5.5.1 authentication required."

Imports System.Net.Mail
Public Class emailStudent
Private Sub sendEmailButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles sendEmailButton.Click


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