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1. #Restaurant management software in vb net excel how to#
2. #Restaurant management software in vb net excel code#
3. #Restaurant management software in vb net excel license#
4. #Restaurant management software in vb net excel windows#

Sub Main()ĭim myExcel As .ApplicationClassĭim sh As .WorksheetĬonsole.WriteLine(". Note that the implementation of the CloseExcel() method will comprise the remainder of this article. If you are writing in ASP.NET, you can do something similar in the Page_Load method.

#Restaurant management software in vb net excel code#

The following code listing shows what a simple Main() routine would look like for a console application that (a) creates an Excel automation object, (b) calls a couple procedures on it, and then (c) closes. Add ASPNET Machine Account and allow "Local Launch" and "Local Activation".Under "Launch and Activation Permissions", select "Customize" and click "Edit" button.Right-click and select Properties | Security tab.System Application Event Log reports: Event Type: Error Event Source: DCOM Event Category: None Event ID: 10016 User: MACHINENAME\ASPNET Computer: MACHINENAME Description: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID The single most common issue encountered when instantiating an automation object on the server in an ASP.NET environment looks something like this: BEGINĮRROR on Excel open : Access is denied. One of the most common issues that will come up in an ASP.NET environment is listed below, along with the solution steps. NET Interop: Excel as Case Study” first.ĭepending on your platform, there may be additional steps required to get Excel running. If you need to instantiate a particular version of Excel, see “ Achieving Backward Compatibility with. The above code listing includes everything that is required to make an instance of the Excel Application in VB.NET. ApplicationClassĭim App As .ApplicationClassĪpp = New .ApplicationClassĪpp.Caption = .ToUpper Public Function OpenExcel(ByVal Interact As Boolean) As _ It is set to a unique identifier by creating a GUID string. However, you need to be aware of one line that may not appear in your code: note where the Caption property of the Excel application is set. If this is nothing new you may move on to the next page.

#Restaurant management software in vb net excel how to#

Office doesn't workīefore we can go on about stopping Excel, we’ll quickly look at how to start Excel.

#Restaurant management software in vb net excel license#

Using server-side Automation to provide Office functionality to unlicensed workstations is not covered by the End User License Agreement (EULA).įigure 1: Note to self. Current licensing guidelines prevent Office Applications from being used on a server to service client requests, unless those clients themselves have licensed copies of Office. Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component (including ASP, DCOM, and NT Services), because Office may exhibit unstable behavior and/or deadlock when run in this environment.īesides the technical problems, you must also consider the feasibility of such a design with respect to licensing. This article really only attempts to address one of them, namely how to close the Office app from your calling app. There are certainly many thorny patches to walk through when involving Office automation in any of your applications (Fig.

#Restaurant management software in vb net excel windows#

NET Process class, and how to use “PInvoke” to call Windows API methods not implemented in the. If you're already knee-deep in this problem, and only interested in force-killing Excel, then skip to page 4 now.įor the interested student this article will explore several important Windows concepts that apply well beyond the Excel application: COM interop/config./management, the. For example, you may wish to kill all running instances of Excel, which is a far simpler problem than targeting a particular process. But keep in mind that you may need to simplify the solutions to your particular needs. Hence we'll use this as our illustration to cover all bases. The most complex situation is undoubtedly in ASP.NET where the server process is running Excel in one of many security scenarios (ASPNET user, IUser, impersonated end user, etc.) and without a desktop user session. We'll politely ask Excel to quit, we'll close and de-reference COM interfaces, manage garbage collection (GC), and ultimately grab a process that just refuses to go - and kill it. In this article, we won't see 50 ways, but we'll investigate various possibilities.

Oddly the question is also answered in several different ways-each guru mentioning his or her pet solution to the problem. A google search for "kill excel" yields nearly 5,000,000 hits. Web developers often ask about dozens of Excel.exe processes stacking up in Task Manager.

"How do I kill Excel" is a very common question asked in development forums and answered hundreds of times.