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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 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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QuestionHow can add column in existing table that also contains some record? Pin
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GeneralMy vote of 2 Pin
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GeneralColumn selection Pin
Roger Handwerker10-Jun-11 23:07
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GeneralData type - custom date Pin
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AnswerRe: Writing to Multiple Sheets Pin
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Generalso simple so good ! Pin
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