AUTHOR: Petar R
DATE MODIFIED : September 22, 2017
DATE POSTED: March 06, 2014
Generally Visual Studio Report Designer operates inside the Visual Studio application. Thus when previewing a report the report constructor is executed in the context of the Visual Studio application and all the configuration settings are obtained from the Visual Studio's devenv.exe.config file. If not taken upon consideration, this might lead to two major issues - ConnectionStrings and AssemblyReferences mismatch.