title: .NET application into 64-Bit: ODBC problem
body: <p>I am currently working on a bigger .NET application provided from a company. When handling with a big amount of data there is the problem that the system runs out of memory. After some research I have decided to take the step and change the target platform of the application to 64-Bit. In Visual Studio 2017 there is the possibility to change the platform of the projects... . When starting to build the application I get the warning CNDL1138 a few times within the output console but the build is successful anyway. When starting the application I get different error/exception messages:</p>
  <ul>
  <li>Exception thrown: 'System.IO.FileNotFoundException' in mscorlib.dll</li>
  <li>Exception thrown: 'System.Data.Odbc.OdbcException' in System.Data.dll</li>
  <li>Exception thrown: 'System.Data.Odbc.OdbcException' in System.Data.dll</li>
  <li>Exception thrown: 'System.InvalidOperationException' in System.Windows.Forms.dll</li>
  </ul>
  <p>So I started to solve the problems step by step. The first thing I tried to solve was the ODCB problem. When starting the problem a pop up window says that there is a mismatch between driver and application. But I have checked the drivers installed they are 64-Bit like the application. I have no clue what the problem could be with the drivers.</p>
  <p>So is here anyone with the same problem and could solve it?</p>
  <p>(Addition information: I am using Visual Studio 2017, .NET Framework 4.6.1, and programming on C#)</p>