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Copy an Excel range to a recordset using ADO

I am trying to retrieve the contents of a range in an excel worksheet into a recordset using ADO in C#.  I am using Excel 2007. This is what I have:

SQLquerySource = "SELECT * FROM [Sheet1$SourceRange]"  //"SourceRange" is a named range

ADODB.Connection cn =new ADODB.Connection();
cn.Open(ExcelSourceConnection, null, null, 0);  //"ExcelSourceConnection" identifies the source workbook
ADODB.Recordset rs = new ADODB.Recordset();
rs.Open(SQLquerySource, cn, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic, -1); //at this statement I get a "COM Exception was unhandled" and its description says "The Microsoft Office Access database engine could not find the object 'Sheet1$SourceRange'.  Make sure the object exists and that you spell its name and the path name correctly."

Of course, when I open the source workbook and check, I can see both the source sheet and the named range are valid, and I have spelled them correctly, so there must be more to it than that.

But what?
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bassman592
Asked:
bassman592
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1 Solution
 
dlmilleCommented:
You don't need the Sheet1$ prefix.  The below assumes SourceRange is scoped at the Workbook (rather than worksheet) level.

SQLquerySource = "SELECT * FROM [SourceRange]"  //"SourceRange" is a named range


Dave
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dlmilleCommented:
If SourceRange is locally scoped to Sheet1, you have to do a bit more work.  First, get the range address of SourceRange, then use your Sheet1$ prefix.

VBA example:

    strSource = "Sheet1$" & Replace([Sheet1!SourceRange].Address, "$", "")
    strSQL = "SELECT * from [" & strSource & "]"


Cheers,

Dave
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bassman592Author Commented:
Sorry, I should have stated that the named range is global scope, but the additional information is useful. I actually was thinking of making some local, but didn't think I would be able to accurately reference them.

Thanks!
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dlmilleCommented:
You're welcome.  I was stumped on the local variable as well, then had to do some testing to get it to local scope.  You almost have to know its local to go local, otherwise you have to do some names backflips to determine if the parent is the workbook or a sheet, etc...

Dave
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