How Do You Deal With Placing Debug Points In A Windows Service?

  protected winnings void OnStart (string [] args)   System .Diagnostics.Debugger.Launch (); 

See Also

• Debugger Security
• Debugging managed code

Sometimes it's important to analyze what happens when a service starts. Attaching to this process won't help here, as you won't be fast enough if you need to attach a debugger during service startup.

Usually the short answer is: I use the following lines of code:

  #if DEBUG    base.RequestAdditionalTime (600000); // means 600 * 1000ms 10 minute timeout    Debugger.Launch (); // Start the debugger, but also attach it#end if 

They are inserted into each OnStart method of the following service:

  protected override void OnStart (line [] args)    #if DEBUG       base.RequestAdditionalTime (600000); ten // minutes of departure delay       Debugger.Launch (); // Run the debugger and attach it    #end if    MyInitOnstart (); // my custom initialization versus service code    // Lets the base class let you do all the work it needs    base.OnStart (arguments); 

For those of you who haven't done it yet, I've included detailed tips below because it's easy to get shotb. The following notes apply to Windows 7x64 and Visual Studio 2010 Team Edition, but should also apply to any applicable additional environments. Expand

Important: the service is active in "manual" mode (either use most of the InstallUtil utility via the VS command line, or run the service project you prepared). Visual Free Studio before starting customer service and downloading a solution that contains the source code for our own service - set additional higher breakpoints if you need both in Visual Studio - then configure the service using the service configuration panel.

Because of the Debugger.Launch code, this surprising result will result in the unhandled message "Microsoft .NET Framework Exception Server name in.exe has occurred." appear. Click Yes, Debug Servicename.exe , this is the last screenshot:

After that, especially regarding Windows 7 UAC, you may be prompted for administrator credentials. Enter it along with weiter mit Das, ja :

after displaying a well-known area of ​​the Just-In-Time Debugger Visual S windowtudio. It asks if you want to debug with a debugger that has been cleaned up. Before clicking Yes , make sure you do not want to reopen a new instance (option 2) - a separate new instance will not be useful here as the source paging will not be displayed. Instead, you select the Visual Instance studio that you configured earlier:

After you answer Yes , after a while Visual Studio will display a yellow arrow on the right with a line containing the comment Debugger.Launch and you can correct them. ... errors encode your ( MyInitOnStart method, which probably contains your initialization).

When you press F5 , execution will continue immediately until the breakpoint you prepared is reached.

Tip. To keep the service running, select Debug -> Disable All. This way, you can start the client that will communicate with the service after it has started successfully, and you are usually done debugging the startup code. If you exit Shift + F5 (stop this debugging) on ​​media, the service type isWe will stop. Instead, your family should use the service control panel to stop this.

• When creating a version, the debug code can be automatically removed and the service will work fine.

• I am using Debugger.Launch () , which decompresses and adds a debugger. I also suggest testing Debugger.Break () , which won't work because the Neo-Debugger is still connected to the startup pointing to the service (which undoubtedly got 1067: "Process s' error unexpectedly aborted. ").

• RequestAdditionalTime has a longer timeout for Itc service (it doesn't delay code, but itself will probably be started immediately with Debugger .Launch statements ). Otherwise, I would argue that the default timeout for the launcher service is too short and therefore the launcher service fails unless the public calls base.Onstart (args) fast enough for the debugger. In practice, a 10-minute timeout avoids the message "Service did not respond ..." immediately after starting the debugger.

• When you get used to itAs a concept, this method will become very simple as you only need to insert 4 lines of code into the existing platform code so that you can quickly check and fix bugs.

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The easiest way to debug is to call all of your functions from within the program. cs Main () displays the results instead of calling them from a new service. Please note that this strategy is only used for debugging your code.

When setting up the OnStart () method, add the actual call to Launch.Start your service (you can use net start off with or start it in the main services window).Select Yes, Debug .In the Just-In-Time Debugger window, use the version of Visual Studio that your family wants to use for debugging.

To add a procedure to your local computer: In Visual Studio, choose Debug> Attach To Process (or press Ctrl + Alt + P) to open the Attach To Process dialog box. Check the connection type.

 

 

 

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Sean Fry

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