Chart.Export throws COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC.

[Steven]

Hi there,

I am trying to export a chart using the Excel11 object from C#. I can
properly open workbooks and read cells, but calling Export() on the Chart
object throws a COMException

Exception: System.Runtime.InteropServices.COMException (0x800A03EC):
Exception from HRESULT: 0x800A03EC.
at Excel._Chart.Export(String Filename, Object FilterName, Object
Interactive)
at MBCCS.LeParc.Importer.Importer.GetImageInfoFromWorksheet(Worksheet
worksheet) in d:\source\leparc\importer\importer.cs:line 211

The line causing this is:

tempChart.Chart.Export(filename, "JPEG", Missing.Value);

The JPEG filter is registered.

I am trying to export a picture in excel. What I am doing is creating a new
chart, copying the picture to the chart, then exporting the chart. The
Excel.exe process is running under the ASPNET account.

Any ideas would be greatly appreciated.

Thanks,

Steven

 

[Steven]

For anyone who is interested in the solution...

The problem was that the ASPNET user account didn't have access to the MSI
Installer COM object. What was happening is that the .Export() method
searches the HKCU registry key for available graphic filters. Because the
ASPNET user is not an interactive user, no user profile had been created for
it, and calling the .Export() method prompted MSI to create the profile
(including the HKCU hive).