PRB: OpenEx() May Fail with "ODBC;" in Connection String

 Last reviewed: June 26, 1997
Article ID: Q157126
The information in this article applies to:
  • The Microsoft Foundation Classes (MFC) included with: - Microsoft Visual C++, 32-bit Edition, versions 4.2, 5.0

SYMPTOMS

When you specify a connection string that begins with the characters ODBC;, CDatabase::OpenEx() does not behave as expected.

OpenEx() may fail to open an ODBC datasource using a connection string that worked with Open(). Some drivers may appear to ignore information in the connection string, such as the userid and password. You may also get an error message in the output window similar to the following: 

   Invalid connection string attribute

CAUSE

CDatabase::OpenEx() does not accept a connection string beginning with ODBC;.

RESOLUTION

Remove the ODBC; prefix from the connection string for OpenEx().

MORE INFORMATION

CDatabase::Open() removes the ODBC; prefix from the connection string before passing it to OpenEx().

If an invalid connection string is passed to the driver, it will look in the registry for connection information.

REFERENCES

Visual C++ Books Online Help for CDatabase::OpenEx().

Visual C++ Books Online Help for SQLDriverConnect().

Keywords : kbprg kbusage MfcDatabase
Technology : kbMfc
Version : 4.2 5.0
Platform : NT WINDOWS
Issue type : kbprb

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Last reviewed: June 26, 1997
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