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Posted 12 Jan 2000

Creating Excel Sheets using ODBC

, 12 Jan 2000
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Writing to Excel spreadsheets using only ODBC
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The Problem

Many apps offer an export function. So wouldn´t it be nice to be able to easily save that result as an Excel sheet?

ODBC does make this possible, but there´s one little drawback: Using ODBC the usual way there has to be a registered datasource (DSN) in the ODBC manager.

This is not very useful because you´d have to install that DSN locally on every machine that should support your export function.

The Solution

Omiting the DSN tag in the connect string of CDatabase::OpenEx() gives us the opportunity to refer the ODBC-Driver directly using its name so we don´t have to have a DSN registered. This, of course, implies that the name of the ODBC-Driver is exactly known.

If you just want to test if a certain driver is present (to show the supported extensions in the CFileOpenDlg for example) just try to CDatabase::OpenEx() it. If it isn´t installed an exception gets thrown.

To create and write to that Excel sheet you simply use SQL as shown in the code sample below.

What is Needed

In order to get the code below going you have to

  • have <afxdb.h> included
  • have an installed ODBC-driver called "MICROSOFT EXCEL DRIVER (*.XLS)"

The Source code

// this example creates the Excel file C:\DEMO.XLS, puts in a worksheet with two
// columns (one text the other numeric) an appends three no-sense records.   
void MyDemo::Put2Excel()
  CDatabase database;
  CString sDriver = "MICROSOFT EXCEL DRIVER (*.XLS)"; // exactly the same name as in the ODBC-Manager
  CString sExcelFile = "c:\\demo.xls";                // Filename and path for the file to be created
  CString sSql;
    // Build the creation string for access without DSN
                sDriver, sExcelFile, sExcelFile);

    // Create the database (i.e. Excel sheet)
    if( database.OpenEx(sSql,CDatabase::noOdbcDialog) )
      // Create table structure
      sSql = "CREATE TABLE demo (Name TEXT,Age NUMBER)";

      // Insert data
      sSql = "INSERT INTO demo (Name,Age) VALUES ('Bruno Brutalinsky',45)";

      sSql = "INSERT INTO demo (Name,Age) VALUES ('Fritz Pappenheimer',30)";

      sSql = "INSERT INTO demo (Name,Age) VALUES ('Hella Wahnsinn',28)";

    // Close database
    TRACE1("Driver not installed: %s",sDriver);


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Comments and Discussions

Questionwhat to include? Pin
drekon5-Sep-05 10:38
memberdrekon5-Sep-05 10:38 
Questionwhat to include Pin
drekon5-Sep-05 10:38
memberdrekon5-Sep-05 10:38 
Generalso simple so good ! Pin
LeonidPh31-Aug-05 5:02
memberLeonidPh31-Aug-05 5:02 
Generalgood thank u Pin
vikas amin23-Aug-05 22:31
membervikas amin23-Aug-05 22:31 
Questionhow to insert more than one table in same sheet Pin
shsak6-May-04 23:49
sussshsak6-May-04 23:49 
AnswerRe: how to insert more than one table in same sheet Pin
phucid9-Oct-05 18:06
memberphucid9-Oct-05 18:06 
Questionchange font style and colors in spreadsheet? Pin
xxhimanshu23-Feb-04 20:11
sussxxhimanshu23-Feb-04 20:11 
GeneralWorks, but why not this?: Pin
kleinb21-Apr-03 21:33
memberkleinb21-Apr-03 21:33 
This works in JET[Access] but not in mySQL

SELECT * INTO [foo] IN foo.xls 'Excel 8.0;' FROM [footable];

One line is so much easier...sigh...

GeneralRe: Works, but why not this?: Pin
polofreak8-Jun-05 0:46
memberpolofreak8-Jun-05 0:46 
GeneralODBC excel driver Pin
Gianluca Nastasi24-Mar-03 0:25
sussGianluca Nastasi24-Mar-03 0:25 
GeneralRe: ODBC excel driver Pin
Herschel S. Krustofsky11-Apr-03 9:55
memberHerschel S. Krustofsky11-Apr-03 9:55 
GeneralPlain C Version Available Pin
Anonymous19-Feb-03 5:08
sussAnonymous19-Feb-03 5:08 
GeneralRe: Plain C Version Available Pin
BilloKhan18-Nov-05 16:34
memberBilloKhan18-Nov-05 16:34 
GeneralRe: Plain C Version Available Pin
liaohaiwen10-Apr-08 20:10
memberliaohaiwen10-Apr-08 20:10 
GeneralStoring date and time values in Excel using ODBC Pin
Klaus Kurt9-Jan-03 6:41
memberKlaus Kurt9-Jan-03 6:41 
Generalsingle quote mark Pin
Martin Step10-Jul-02 0:34
memberMartin Step10-Jul-02 0:34 
GeneralRe: single quote mark Pin
oneleg14-Mar-05 2:46
memberoneleg14-Mar-05 2:46 
Generaloverwriting cells in existing table Pin
Anonymous26-Jun-02 2:26
memberAnonymous26-Jun-02 2:26 
GeneralRe: overwriting cells in existing table Pin
Obliterator11-Jul-02 4:31
memberObliterator11-Jul-02 4:31 
Generalexcel template Pin
Johnny007_24/710-Jun-02 8:49
memberJohnny007_24/710-Jun-02 8:49 
General... Pin
Anonymous10-Jun-02 8:19
memberAnonymous10-Jun-02 8:19 

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