pdb file, and any other files the DLL requires. To debug an external DLL, a calling project must be able to find the DLL, its. In the Properties pane, under Linker > Debugging, select Yes (/ASSEMBLYDEBUG) for Debuggable Assembly.įor more information, see /ASSEMBLYDEBUG.

Select the C++ DLL project in Solution Explorer and select the Properties icon, or right-click the project and select Properties. How to: Set Debug and Release configurationsįor the debugger to attach to a C++ DLL, the C++ code must emit DebuggableAttribute.Project settings for a Visual Basic debug configuration.

Project settings for C# debug configurations.

Project settings for a C++ debug configuration.

For more information, see the following articles: You can change these settings if necessary. When you use a Visual Studio project template to create an app, Visual Studio automatically creates required settings for Debug and Release build configurations. When you debug the calling project, depending on the DLL configuration, you can step into and debug the DLL code. You usually call a DLL from another project.

C# or Visual Basic Windows Forms Control (WCF) Libraryįor more information, see MFC debugging techniques.ĭebugging a WCF Library is similar to debugging a Class Library.

The following Visual Studio project templates can create DLLs: You can use Visual Studio to create, build, configure, and debug DLLs. Applies to: Visual Studio Visual Studio for Mac Visual Studio CodeĪ DLL (dynamic-link library) is a library that contains code and data that can be used by more than one app.

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