Hi..

Same Problem we faced.. but Problem is here..
In your data , somewhere data like 2032-32-32 it's as a string in Database
and when u import data from DataBase to Excel and you given a
numberformat="@" yet it's automatically count that cell datatype as a
DataTime..

and Your Excel sheet is not a Microsoft Workbook Sheet(.Xls) but it's XML
SpreadSheet (.Xls) cause you are using OWC. after taking that file on your PC
, open that file as XML.. and see Format of that file .. It's Look like
this.. <.. ns:DataTime2032-32-32</.. so you have to change that fromat from
DateTime to string.

I m suggesting one solution.. may be others..

After
xlsheet.Export(strSourceFileName,
OWC.SheetExportActionEnum.ssExportActionNone)

Do This....
Dim XLSContent As String
XLSContent = System.IO.File.ReadAllText(strSourceFileName)
XLSContent = XLSContent.Replace("ss:Type=""DateTime""", "ss:Type=""String""")
System.IO.File.WriteAllText(strSourceFileName, XLSContent)

Now, you are thinking i told you look like ns:DateTime than why i write
ss:Type.. cause when Conversion occure at that time it's format is ss:Type..

Try this one.. Best Luck
"Kaustav" wrote:

Hi,

I am facing a peculiar problem with Excel Automation. I have a winform where
in I display some data in OWC axSpreadsheet. Next I export this data to an
.xls file. When I try to open (through OleDb) and read this file, I get an
error -

"External table is not in the expected format." However, if I have the file
open in Excel, I am able to read it through code.

However the same piece of code works for some files without having them
opened in Excel. What am I missing out here? Please suggest.