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Performance issues
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12/04/2004 18:24:19
 
 
À
12/04/2004 12:26:44
Mike Yearwood
Toronto, Ontario, Canada
Information générale
Forum:
Visual FoxPro
Catégorie:
COM/DCOM et OLE Automation
Divers
Thread ID:
00894049
Message ID:
00894263
Vues:
8
>Hi Kenneth
>
>I asked this same question a while ago. I ended up copying the information to the Windows Clipboard and from there into an Excel range. The thread that starts here: 849641
>
>>This picks up on a question I asked earlier. Thanks to Cetin for answering. Your comments were very helpfull. Here's my second issue:
>>
>>I instantiate Excel inside a VFP executable with this code:
>>oXL = CREATEOBJECT( "Excel.Application" )
>>
>>I then parse through a VFP table and transfer the contents of that table into and excel spreadsheet created this way:
>>oWorkSheet = oXL.WorkBooks.Add( _myTemplate File_ )
>>
>>The code to place the value into the spreadsheet, typically looks like this:
>>oWorkSheet.Sheets(1).Cells( nRow, nCol ).Value = nNewValue
>>
>>This works just fine, with one "minor" issue: it is painfully slow. It takes 44 seconds on a 900mhz Duron powered machine to write and format a 500 row by 10 column set of data into the spreadsheet. I know VFP exports to Excel nearly instantaneously so I'm wondering if there isn't something that can be done to speed this up? I haven't used the "COPY TO _file_ TYPE XLS" approach because of some formatting requirements the client has imposed.

I think you're running into performance issues as outlined in the "Performance" link in the following:
http://msdn.microsoft.com/library/en-us/dnfoxgen7/html/vfpandcom.asp?frame=true&_r=1
Regards. Al

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