How to open a specific excel file by activex & overwrite by set_cell_value.vi

I've seen the 'Write Table and Chart to XL.llb', but how can i open an existing excel file/workbook/sheet and rewrite some of the data instead of open a new worksheet everytime? It may already shown in your examples somewhere, but since I'm new to activex/property node stuff, I can't figure it out. Your help is appretiated.
Thanks
Anthony

The process is very similar. Starting with the example, open the diagram and you'll see a VI labled "Open Book" (The name of the VI is actually "Open New Workbook.vi". Right click on it and select Replace/Select a VI...
Now navigate to \\Labview 7.0\examples\comm\excelexamples.llb and select the file "Open Specific Workbook.vi". This VI has an input for specifying a filename to open.
Likewise, the example also calls a VI named "Open a New Worksheet.vi" replace that with "Open a Specific Worksheet.vi" (found in the same place).
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

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See if this helps. I opened the old excel file and added the new rows into the existing workbook.
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Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing,
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xlRange = (Excel.Range)worksheet.Rows["1:" + LastRow, Type.Missing];
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releaseObject(worksheet);
releaseObject(excel);
jdweng

How to open a specific excel file by activex & overwrite by set_cell_value.vi

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