MATLAB: Actxserver unable to locate Excel workbook

activexexcel

I am having issues getting the ActiveX application to open an existing Excel doc for editing.
My current code looks like:
file_name = 'Excel_Book.xlsx';
xl = actxserver('Excel.Application');
xlb = xl.Workbooks.Open(file_name);
This returns the error:
Error
Invoke Error, Dispatch Exception:
Source Microsoft Excel
Description: 'Excel_Book.xlsx' could not be found
I know that the file exists, as I can read it with
xlsread(file_name)
I have even changed the MATLAB directory to be seeing the folder with the Excel_Book file in it, and yet the ActiveX refuses to read the document.
Similar problems were encountered using:
xlb = xl.Workbooks.Item(file_name);
or
xlb = xl.get('Workbooks',file_name);

Best Answer

It would be safer to use fullfile() to create a fully-qualified file name to request to open.
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