Microsoft Office Automation 2010
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How to Use Automation with Excel and VB.NET?
Preparations
To control Excel, you must add to your project a reference to Microsoft Excel Object Library (in COM components) or directly reference the Primary Interop Assemblies (PIA) Microsoft.Office.Interop.Excel.dll, Microsoft.VBE.Interop . dll and Office.dll
In this example I will use the second solution.
About Primary Interop Assemblies
Although Microsoft recommends using a version of the PIA corresponding to the Office installed together with your application version, I found that there is a good backward compatibility between these assemblies. So I made it a habit to use an old version of the PIA, those of Office XP. They have the advantage of allowing my application to run on all versions of Office XP to 2007.
You can download these assemblies on the Microsoft website:
The basics of Excel automation
Creation and assignment of the Excel object
XlApp As Microsoft.Office.Interop.Excel.Application = New Microsoft.Office.Interop.Excel.Application() Dim xlApp As New Microsoft.Office.Interop.Excel.Application Microsoft.Office.Interop.Excel.Application = ()
Creating a Workbook
XLDestBook As Microsoft.Office.Interop.Excel.WorkbookXLDestBook = XlApp.Workbooks.Add Sun XLDestBook As Microsoft.Office.Interop.Excel.WorkbookXLDestBook = XlApp.Workbooks.Add
Open an existing workbook
) XLDestBook XlApp.Workbooks.Open = ("c: \ monfichier.xls")
Adding a sheet
xlSheet As Microsoft.Office.Interop.Excel.WorksheetxlSheet = XLDestBook.Worksheets.Add Sun xlSheet As Microsoft.Office.Interop.Excel.WorksheetxlSheet = XLDestBook.Worksheets.Add
Add text in a cell
xlSheet.Cells (1, 2). value = "Test writing in cell B1"
Add a formula in a cell
xlSheet.Cells (1, 3). formula = "1 = 5"
The forms must be written in the language of Excel. If your users are likely to use Excel versions in different languages so you should bring your formulas. For this you can use this reference
Recommendations
Make it a habit before processing automation disable the Excel screen refresh, and prevent user input. The performance will be greatly improved, and this will prevent your users from disrupting the treatment.
For this, use the following lines before any treatment:
XlApp.ScreenUpdating = FalseXlApp.Interactive = False
Iron these parameters to True when your treatment is completed, otherwise Excel will be unusable.
For more information please refer to the Microsoft Knowledge Base:
Attention to language
If you have users using an English version of Windows, there are chances that your application crashes with message: Error: 0x80028018 (-2147647512) - Description: Old Format or Invalid Type Library
This scenario occurs when the user has customized the Windows regional settings. This is a case that I regularly met with expatriates. They select the locale in their country of residence, and change the decimal separator and the currency to match those of their country of origin.
Source: social.msdn.microsoft.com
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Future of VBA
I've learned a bit of VBA for Excel and have had some pretty good results with it at work - saving time, automating some things, and one general macro I created that briefly made me the office hero. I'd like to learn more about it but I read that Microsoft is trying to kill VBA. When do you think it will be phased out? Not sure if it makes sense to learn more about something that is going away. Anyone know?
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Jan 06, 2010 by Australia | Posted in Other - Computers
Open Office Word Document is free. Microsoft isn t. Micrsosoft is around $100 for my computer. What s the difference?
OpenOffice is free, but the downside is that it needs Java to run on. Java takes up about 300MB of hard drive space and must also be running on your system. This takes up more memory resources, making your system run slower, including OpenOffice itself. You should also check out SSuite Office for a free office suite. Their software also don t need to run on Java or .NET, like so many open source office suites, so it makes their software very …
Feb 03, 2010 by d4rkph30n1x | Posted in Software
Deciding which to get, would rather get open office, but would need to know if it can open all of the files of Microsoft office, mainly Word, because have old version of word at home, so need updating, but have newest Microsoft word at work, so need it to be compatible with each other, any help much valued, thanks. :)
It is compatible.Did you even try to search about this? Read here Even big cities have left Microsoft for Open Office and of course that means that it is OK Why? It is free of charge and can do the same things.
Jun 24, 2012 by Carl | Posted in Small Business
1) Two information systems that support the entire organization are A. enterprise resource planning systems and dashboards B. transaction processing systems and office automation systems C. enterprise resource planning systems and transaction processing systems D. expert systems and office automation systems 2) is the direct use of information systems by employees in their work A. Transaction processing systems B. End-user computing C. Decision …
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