JetBrains Rider
 
2023.1
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  1. Run, debug, test, deploy
  2. Debugging
  3. Attach to process

Attach to process

Last modified: 14 April 2023

Run | Attach to Process Ctrl+Alt+P

JetBrains Rider provides a way to attach the debugger to both local and remote processes.

The steps to attach to a process depend on how and where the process was launched.

First off, if you want to debug a program that can be started from JetBrains Rider, the best way to do so is to start a local debugging session.

tip

While JetBrains Rider debugger is capable of attaching to any .NET or .NET Core process, it is recommended to prefer a simpler way when there is one. You don't want to attach to a 'hello world' running on the same machine.

Attach to a local process

If you don't have sources of the target .NET process, you can still attach to it either as described above or by clicking Attach to Process on the Welcome screen, right after you start the IDE. JetBrains Rider will automatically load and decompile all assemblies from the process.

To get a proper starting point for debugging the target process, you can search for types in the loaded assemblies and set breakpoints in the decompiled code.

Attach to recent processes

All processes that you have attached to in the current session are listed in the Recently attached section at the top of the Attach to Process dialog, so you can easily return to processes that you worked with.

JetBrains Rider will list recent processes even if they were terminated and then relaunched with a different PID.

You can attach again to the very last process that you have attached to, even without opening the dialog. To do so, press Alt+Shift+P or choose Run | Reattach to Process from the main menu.

Attach to a remote process

Debugging a remote process (usually, a Web application running on a remote host), is a completely different scenario, which requires setting up the debug agent on the remote host and configuring the connection before actually attaching to the target process. All those steps are described in the Debug remote applications via SSH tutorial.

Detach from a process

The procedure to detach from a remote process is the same as for stopping a local debug session, however, the effect is different. When you detach, the debugging session closes but the process continues to run.

See also

Reference