I am developing an application that can export a DGV to excel file, so i have some references to MS Office and excel. How can I develope the program to be deployed on a machine that doesnt have Excel.. When I ran it on a new Win7 machine I have without office I couldnt even run debug because office isnt on the computer.I am not asking to be able to create an excel export on a machine without excel, just be able to run the program? Or do I need tow version of the program one for and one without excel
I want to refactor my existing application to work with as a client/server app, and was looking at introductions to Remoting.I got a simple system up and running 2 days ago, and haven't touched it since until just now, but now I'm getting an error message when trying to instantiate a class from the remoted DLL : "No connection could be made because the target machine actively refused it".The server and client are both actually running on the same machine for simplicity at the moment. I have three "applications" involved - a class library containing the server functionality, a listener application sitting with the server, and then a client applicaition.Most of the articles I can find online referring to this error seem to apply primarily to asp.net but I'm just using traditional vb.net (2008)I initially suspected the cause may be firewall related (as when I first got it running I was prompted to allow access) but I've turned off my McAfee firewall and also my Windows firewall with no joy, and besides - the error message seems to imply that communication with the server has been established but that it doesn't want to play ball.
94.69.250.128:8888 ( My external IP:Port that I've configures the task ) I'm kinda stuck in it, whilst my Chat application is ready, it seems it can't connect to the Internet now. The error is happening on the line :
I'm in the process of upgrading my web pages from asp classic to asp.net.My previous code used CDO to send emails.[code]This code works fine but I'd like to send emails from my asp.net pages. When I send from the .net pages, I get the error message: "No connection could be made because the target machine actively refused it xx.xx.xxx.xxx:2 " [code]I'm rather new to .Net but I've searched for hours and can not come up with a reason why the old code works but the new doesn't.
I have my tcplistener on port 5000, 127.0.0.1 as the ip and when i connect using my internal ip, 192.168.1.141 it "refuses the connection", same with the external but if i connect using 127.0.0.1 it works. how do i fix this?
I made 2 simple VB .Net applications.One is listening on a port and echoing received message to sender (server side), and the other sends messages to it (client side).When I run them both on my machine, everything goes fine.
The problem arised when I tried running each of them on different machines. The client throws an error : "No connection could be made because the target machine actively refused it"
chat application i getting error: No connection could be made because the target machine actively refused it.?? my english wasn very good..Is there another way to connect from first app. to second app. ? Maybe using webservice like
I get this error "No connection could be made because the target machine actively refused it 69.69.247.18:80." when executing this code. It is caught on the line indicated with..[code]
How to make a chat program. Well I just copied code in and the program worked. I can send a message to the server and it sends it back just fine. But I can only send a message once. If I try to send another message I get an error and it says this "A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll" then it "No connection could be made because the target machine actively refused it 127.0.0.1:500". Here is the link to the tutorial and code: [URL]
I'm creating a WindowsForm application and I need a code to check target's machine installed version of DirectX.If the reg key doesn't match with provided one >>> load the form and launch the DX installer "redistdirectx_Jun2010_redistDXSETUP.exe"If the reg key matches with the provided one >>> launch other application "Setup.exe"
I am trying to make a client server form application using VB2005. I am using VS2005 Professional for development.
The problem is as follows: When more than one client tries to connect to the server. The connection is refused and the Client gets an exception in Connect() method - Target machine actively refused the connection.
This problem occurs only when 2 or more clients try to simultaneously connect to the server. For a single client accessing at a time the problem does not occur. The code segment is as given below:
-----------1 Module Imports System.Net.Sockets Imports System.Net Public Class FrmMdiParent Dim WithEvents wsServer As New Winsock2005DLL.Winsock Private Sub FrmMdiParent_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing [Code] .....
The above exception is thrown when more than 1 clients try to access the server simultaneously.
[ERROR] System.Net.Sockets.SocketException:No connection could be made because the target machine actively refused it 192.168.0.59:500 at system.Net.Sockets.TCPClient.Connect(String hostname, Int32 port) at WinClient.Form1.btnSignIn_Click(Object sender, EventArgs e) [/ERROR]
Though I dont believe the issue is with the code here it is:[code]......
I have been doing a lot of reading on this topic and most folks seem to agree that having Excel is required to use the COM Interop libraries. However they are never specific as to where that should be installed. Does it need to be installed on the machine I am developing on or does it need to be on every machine that I deploy to?
Edit: I should mention that this is desktop development/deployment targeted for all Windows machines.
open and read and write and save to Excel and word documents in a program if the machine that is being run on does not have either of thies apps installed. Are there files that I can include in my application that it could be worked on in my application and not need word or excel?
my app interacts with excel. im running office2007 on my dev machine but the target machine running office2010.i had this problem before where i had to remove office12, install 11 and recompile the project to get it to work on the clients machine, adding multiple references didn't help. is there a work around, or a library that works with any excel version.
I'm writing a VB.NET WEB application and I'm fairly new at it. What I want to do is open Excel workbooks on the client workstation so the user can "Save As" or print or basically do whatever they want with it past that point. I've done this in a windows application using System.Diagnostics but all the information I've read so far doesn't seem to work. I can open .txt and .xls files using this approach:[code]but it opens in the browser, which is not what I want. Do I need to mix Javascript with the HTML and the VB code?
I'm facing a problem reading .csv file into datatable. The machine on which i install my window service ( which reads the csv ) is Windows Server 2008 R2.The error i get is : The 'Microsoft.Jet.Oledb.4.0' provider is not registered on the local machine
Below is the code i use to fill the dataset from .csv file :
I also looked at the other option i.e. Micorosft.Office.Interop.Excel but that also needs Excel installed.So, I would like to know that, is there a way to read a .csv file without having Microsoft Excel install on the machine.
when I go to the advanced compile options the dropdown box (and label with info) to change the target cpu missing.Do I need to change a setting, or is there an other way to change the target cpu?
I developed an app using the .net framework 3.5 sp1. I have now been told that the published version must not require sp1 but just the 3.5 framework.
So I uninstalled sp1 from my pc but not cannot publish the app. The app code will run without error but when I build it for publishing I get the error The "RequiresFramework35SP1Assembly" task was not found. Check the following: 1.) The name of the task in the project file is the same as the name of the task class. 2.) The task class is "public" and implements the Microsoft.Build.Framework.ITask interface. 3.) The task is correctly declared with <UsingTask> in the project file, or in the *.tasks files located in the "C:WINDOWSMicrosoft.NETFrameworkv3.5" directory.
While I can do DoDragDrop() to initiate a FileDrop from a listview to Windows Explorer, how can I tell anything about the target of the drop? For instance if I wanted to find the path where my files were dropped to?
Example:
1) User clicks and drags listviewitem which turns into a FileDrop with a file's path.
I'm not a daily programmer so these nuances regarding VBnet drive me crazy. I've written my app with a P4, XP, dotnet 3.5 PC using VB express 2008.Does that mean are not NOT compatable with any machine running dotnet 3.5?
When I have the following code, I get an "Expression is a value and therefore cannot be the target of an assignment." error as shown:
Public Class Form1 'Test Project Public Structure Blah Public ID As String
[code].....
But when I change the structure to a class, this works fine:
Public Class Form1 'Test Project Public Class Blah Public ID As String
[code].....
What connection am I missing between the two? I don't understand why the first example doesn't work, but the second does. Everything I know says they should both work just fine.
I've intrested how make webbrowser know the targets and know what to do when the link has got the target. I don't know how to make new window form too because there are functions with targets (sizeable, Adressbar, width,
Error: Trying to revoke a drop target that has not been registered (Exception from HRESULT: 0x80040100 (DRAGDROP_E_NOTREGISTERED))
I am trying to dynamically zoom inout of a pdf document that i'm viewing in a WebBrowser 2.0 control in VB NET 2008. If I navigate to a web URL the following code works fine but if I try the same code while viewing a pdf file the above exception is thrown.
Try Dim MyWeb As Object MyWeb = Me.WebBrowserPDF.ActiveXInstance
I develop an application using vb.net.application will run on client server architecture.when we try to execute the program in client side then it will give me an error which is related to sqlclientexception.how can i handle this situation.i used vb.net 3.5 as front end and sql server 2000 as back end.i have done total coding with system.data.sqlclient namespace.
I've inherited a lot of custom made software for an office, and, while managing it, I've found it performs differently from machine to machine.I mean, some controls get painted in weird ways in some machines but well in another, or just work differently, like in some machines clicking something selects it, and in the next machine clicking the same thing makes it editable.I suspect, o course, of the myriad of DLL the software loads
I want to block a perticular machine from accessing my machine..Both the machines are in LAN..I dont want a perticular machine to access my computer How can i achieve this...I want to do this using VB.NetAny idea....
