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changing data provider location

Have a desktop application that allows a user to execute one of many crystal reports.All reports are stored in a preset file directory and use ODBC or OLE DB connectivity for data access against our Oracle and SQL Server databases. I have the following software development environment.

Visual Studio 2013.

All Service packs have been installed from the SAP website

some examples of my file versions are:

CrystalDecisions.CrystalReports.Engine product/file version is: 13.0.20.2399

CrystalDecisions.Enterprise.Viewing.ReportSource product/file version is: 13.0.20.2399

Some of the dll’s are version 14.x

We do not implement a report application server (RAS) in any form.

The questions are:

1) What is the correct run-time environment to implement the ability to programmatically change a reports ODBC connection to non ODBC connection?

2) How do I replace the connection objects programmatically?

thank you

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