Set debug and release configurations in Visual Studio
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
Visual Studio projects have separate release and debug configurations for your program. You build the debug version for debugging and the release version for the final release distribution.
In debug configuration, your program compiles with full symbolic debug information and no optimization. Optimization complicates debugging, because the relationship between source code and generated instructions is more complex.
The release configuration of your program has no symbolic debug information and is fully optimized. For managed code and C++ code, debug information can be generated in .pdb files, depending on the compiler options that are used. Creating .pdb files can be useful if you later have to debug your release version.
For more information about build configurations, see Understand build configurations.
You can change the build configuration from the Build menu, from the toolbar, or in the project's property pages. Project property pages are language-specific. The procedure below shows how to change the build configuration from the menu and the toolbar. For more information about how to change the build configuration in projects in different languages, see the See also section below.
Change the build configuration
To change the build configuration, either:
On the toolbar, choose either Debug or Release from the Solution Configurations list.
or
From the Build menu, select Configuration Manager, then select Debug or Release.
Generate symbol (.pdb) files for a build (C#, C++, Visual Basic, F#)
You can choose to generate symbol (.pdb) files and what debug information to include. For most project types, the compiler generates symbol files by default for debug and release builds, while other default settings differ by project type and Visual Studio version.
Important
The debugger will load only a .pdb file for an executable file that exactly matches the .pdb file that was created when the executable was built (that is, the .pdb must be the original or a copy of the original .pdb file). For more information, see Why does Visual Studio require debugger symbol files to exactly match the binary files that they were built with?.
Each project type may have a different way of setting these options.
Generate symbol files for a C#, ASP.NET, or Visual Basic project (.NET Framework)
For detailed information on project settings for debug configurations in C# or Visual Basic, see Project settings for a C# debug configuration or Project settings for a Visual Basic debug configuration.
In Solution Explorer, right-click the project and choose Properties.
In the side pane, choose Build (or Compile in Visual Basic).
In the Configuration list at the top, choose Debug or Release.
Select the Advanced button (or the Advanced Compile Options button in Visual Basic).
In the Debugging information list (or the Generate debug info list in Visual Basic), choose Full, Pdb-only, or Portable.
The portable format is the most recent cross-platform format for .NET Core. For more information on options, see Advanced Build Settings dialog box (C#).
Build your project.
The compiler creates the symbol file(s) in the same folder as the executable or the main output file.
Generate symbol files for a C++ project
In Solution Explorer, right-click the project and choose Properties.
In the Configuration list, choose Debug or Release.
In the side pane, choose Linker > Debugging, then select options for Generate Debug Info.
In most C++ projects, the default value is Generate Debug Information (/DEBUG).
For detailed information on project settings for debug configurations in C++, see Project settings for a C++ debug configuration.
Configure options for Generate Program Database Files.
In most C++ projects, the default value is
$(OutDir)$(TargetName).pdb, which generates .pdb files in the output folder.
Build your project.
The compiler creates the symbol file(s) in the same folder as the executable or the main output file.