Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use Trace method of Microsoft.TestPlatform.AttachVS.DebuggerUtility class

Best Vstest code snippet using Microsoft.TestPlatform.AttachVS.DebuggerUtility.Trace

AttachVs.cs

Source:AttachVs.cs

...18        try19        {20            if (pid == null)21            {22                Trace($"FAIL: Pid is null.");23                return false;24            }25            var process = Process.GetProcessById(pid.Value);26            Trace($"Starting with pid '{pid}({process.ProcessName})', and vsPid '{vsPid}'");27            Trace($"Using pid: {pid} to get parent VS.");28            var vs = GetVsFromPid(Process.GetProcessById(vsPid ?? process.Id));29            if (vs != null)30            {31                Trace($"Parent VS is {vs.ProcessName} ({vs.Id}).");32                AttachTo(process, vs);33                return true;34            }35            Trace($"Parent VS not found, finding the first VS that started.");36            var firstVs = Process.GetProcesses()37                .Where(p => p.ProcessName == "devenv")38                .Select(p =>39                {40                    try41                    {42                        return new { Process = p, p.StartTime, p.HasExited };43                    }44                    catch45                    {46                        return null;47                    }48                })49                .Where(p => p != null && !p.HasExited)50                .OrderBy(p => p!.StartTime)51                .FirstOrDefault();52            if (firstVs != null)53            {54                Trace($"Found VS {firstVs.Process.Id}");55                AttachTo(process, firstVs.Process);56                return true;57            }58            Trace("Could not find any started VS.");59        }60        catch (Exception ex)61        {62            Trace($"ERROR: {ex}, {ex.StackTrace}");63        }64        return false;65    }66    private static void AttachTo(Process process, Process vs)67    {68        var attached = AttachVs(vs, process.Id);69        if (attached)70        {71            // You won't see this in DebugView++ because at this point VS is already attached and all the output goes into Debug window in VS.72            Trace($"SUCCESS: Attached process: {process.ProcessName} ({process.Id})");73        }74        else75        {76            Trace($"FAIL: Could not attach process: {process.ProcessName} ({process.Id})");77        }78    }79    private static bool AttachVs(Process vs, int pid)80    {81        IBindCtx? bindCtx = null;82        IRunningObjectTable? runninObjectTable = null;83        IEnumMoniker? enumMoniker = null;84        try85        {86            var r = CreateBindCtx(0, out bindCtx);87            Marshal.ThrowExceptionForHR(r);88            if (bindCtx == null)89            {90                Trace($"BindCtx is null. Cannot attach VS.");91                return false;92            }93            bindCtx.GetRunningObjectTable(out runninObjectTable);94            if (runninObjectTable == null)95            {96                Trace($"RunningObjectTable is null. Cannot attach VS.");97                return false;98            }99            runninObjectTable.EnumRunning(out enumMoniker);100            if (enumMoniker == null)101            {102                Trace($"EnumMoniker is null. Cannot attach VS.");103                return false;104            }105            var dteSuffix = ":" + vs.Id;106            var moniker = new IMoniker[1];107            while (enumMoniker.Next(1, moniker, IntPtr.Zero) == 0 && moniker[0] != null)108            {109                moniker[0].GetDisplayName(bindCtx, null, out string dn);110                if (dn.StartsWith("!VisualStudio.DTE.") && dn.EndsWith(dteSuffix))111                {112                    object dbg, lps;113                    runninObjectTable.GetObject(moniker[0], out object dte);114                    // The COM object can be busy, we retry few times, hoping that it won't be busy next time.115                    for (var i = 0; i < 10; i++)116                    {117                        try118                        {119                            dbg = dte.GetType().InvokeMember("Debugger", BindingFlags.GetProperty, null, dte, null, CultureInfo.InvariantCulture)!;120                            lps = dbg.GetType().InvokeMember("LocalProcesses", BindingFlags.GetProperty, null, dbg, null, CultureInfo.InvariantCulture)!;121                            var lpn = (System.Collections.IEnumerator)lps.GetType().InvokeMember("GetEnumerator", BindingFlags.InvokeMethod, null, lps, null, CultureInfo.InvariantCulture)!;122                            while (lpn.MoveNext())123                            {124                                var pn = Convert.ToInt32(lpn.Current.GetType().InvokeMember("ProcessID", BindingFlags.GetProperty, null, lpn.Current, null, CultureInfo.InvariantCulture), CultureInfo.InvariantCulture);125                                if (pn == pid)126                                {127                                    lpn.Current.GetType().InvokeMember("Attach", BindingFlags.InvokeMethod, null, lpn.Current, null, CultureInfo.InvariantCulture);128                                    return true;129                                }130                            }131                        }132                        // Catch the exception if it is COMException coming directly, or coming from methodInvocation, otherwise just let it be.133                        catch (Exception ex) when (ex is COMException || (ex is TargetInvocationException tie && tie.InnerException is COMException))134                        {135                            Trace($"ComException: Retrying in 250ms.\n{ex}");136                            Thread.Sleep(250);137                        }138                    }139                    Marshal.ReleaseComObject(moniker[0]);140                    break;141                }142                Marshal.ReleaseComObject(moniker[0]);143            }144            return false;145        }146        finally147        {148            if (enumMoniker != null)149            {150                try151                {152                    Marshal.ReleaseComObject(enumMoniker);153                }154                catch { }155            }156            if (runninObjectTable != null)157            {158                try159                {160                    Marshal.ReleaseComObject(runninObjectTable);161                }162                catch { }163            }164            if (bindCtx != null)165            {166                try167                {168                    Marshal.ReleaseComObject(bindCtx);169                }170                catch { }171            }172        }173    }174    private static Process? GetVsFromPid(Process process)175    {176        var parent = process;177        while (!IsVsOrNull(parent))178        {179            parent = GetParentProcess(parent);180        }181        return parent;182    }183    private static bool IsVsOrNull([NotNullWhen(false)] Process? process)184    {185        if (process == null)186        {187            Trace("Parent process is null..");188            return true;189        }190        var isVs = process.ProcessName.Equals("devenv", StringComparison.InvariantCultureIgnoreCase);191        if (isVs)192        {193            Trace($"Process {process.ProcessName} ({process.Id}) is VS.");194        }195        else196        {197            Trace($"Process {process.ProcessName} ({process.Id}) is not VS.");198        }199        return isVs;200    }201    private static bool IsCorrectParent(Process currentProcess, Process parent)202    {203        try204        {205            // Parent needs to start before the child, otherwise it might be a different process206            // that is just reusing the same PID.207            if (parent.StartTime <= currentProcess.StartTime)208            {209                return true;210            }211            Trace($"Process {parent.ProcessName} ({parent.Id}) is not a valid parent because it started after the current process.");212        }213        catch214        {215            // Access denied or process exited while we were holding the Process object.216        }217        return false;218    }219    private static Process? GetParentProcess(Process process)220    {221        int id = GetParentProcessId(process);222        if (id != -1)223        {224            try225            {226                var parent = Process.GetProcessById(id);227                if (IsCorrectParent(process, parent))228                    return parent;229            }230            catch231            {232                // throws when parent no longer runs233            }234        }235        return null;236        static int GetParentProcessId(Process process)237        {238            try239            {240                var handle = process.Handle;241                var res = NtQueryInformationProcess(handle, 0, out var pbi, Marshal.SizeOf<PROCESS_BASIC_INFORMATION>(), out int size);242                var p = res != 0 ? -1 : pbi.InheritedFromUniqueProcessId.ToInt32();243                return p;244            }245            catch246            {247                return -1;248            }249        }250    }251    private static void Trace(string message, [CallerMemberName] string? methodName = null)252    {253        System.Diagnostics.Trace.WriteLine($"[AttachVS]{methodName}: {message}");254    }255    [StructLayout(LayoutKind.Sequential)]256    private struct PROCESS_BASIC_INFORMATION257    {258        public readonly IntPtr ExitStatus;259        public readonly IntPtr PebBaseAddress;260        public readonly IntPtr AffinityMask;261        public readonly IntPtr BasePriority;262        public readonly IntPtr UniqueProcessId;263        public IntPtr InheritedFromUniqueProcessId;264    }265    [DllImport("ntdll.dll", SetLastError = true)]266    private static extern int NtQueryInformationProcess(267        IntPtr processHandle,...

Program.cs

Source:Program.cs

...8{9    static void Main(string[] args)10    {11        _ = args ?? throw new ArgumentNullException(nameof(args));12        Trace.Listeners.Add(new ConsoleTraceListener());13        int? pid = ParsePid(args, position: 0);14        int? vsPid = ParsePid(args, position: 1);15        var exitCode = DebuggerUtility.AttachVSToProcess(pid, vsPid) ? 0 : 1;16        Environment.Exit(exitCode);17    }18    private static int? ParsePid(string[] args, int position)19    {20        var id = args.Skip(position).Take(1).SingleOrDefault();21        int? pid = id == null22            ? null23            : int.TryParse(id, out var i)24                ? i25                : null;26        return pid;...

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2DebuggerUtility.Trace("Hello World");3using Microsoft.TestPlatform.AttachVS;4DebuggerUtility.Trace("Hello World");5using Microsoft.TestPlatform.AttachVS;6DebuggerUtility.Trace("Hello World");7using Microsoft.TestPlatform.AttachVS;8DebuggerUtility.Trace("Hello World");9using Microsoft.TestPlatform.AttachVS;10DebuggerUtility.Trace("Hello World");11using Microsoft.TestPlatform.AttachVS;12DebuggerUtility.Trace("Hello World");13using Microsoft.TestPlatform.AttachVS;14DebuggerUtility.Trace("Hello World");15using Microsoft.TestPlatform.AttachVS;16DebuggerUtility.Trace("Hello World");17using Microsoft.TestPlatform.AttachVS;18DebuggerUtility.Trace("Hello World");19using Microsoft.TestPlatform.AttachVS;20DebuggerUtility.Trace("Hello World");21using Microsoft.TestPlatform.AttachVS;22DebuggerUtility.Trace("Hello World");23using Microsoft.TestPlatform.AttachVS;24DebuggerUtility.Trace("Hello World");25using Microsoft.TestPlatform.AttachVS;26DebuggerUtility.Trace("Hello World");27using Microsoft.TestPlatform.AttachVS;28DebuggerUtility.Trace("Hello World");

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2using System;3{4    {5        static void Main(string[] args)6        {7            DebuggerUtility.Trace("Hello World");8        }9    }10}11using Microsoft.TestPlatform.AttachVS;12using System;13{14    {15        static void Main(string[] args)16        {17            DebuggerUtility.AttachVS();18        }19    }20}21using Microsoft.TestPlatform.AttachVS;22using System;23{24    {25        static void Main(string[] args)26        {27            DebuggerUtility.AttachVS("C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe");28        }29    }30}31using Microsoft.TestPlatform.AttachVS;32using System;33{34    {35        static void Main(string[] args)36        {37            DebuggerUtility.AttachVS("C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe", "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe");38        }39    }40}41using Microsoft.TestPlatform.AttachVS;42using System;43{44    {45        static void Main(string[] args)46        {47            DebuggerUtility.AttachVS("C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe", "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe", "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\Common7\\IDE\\devenv.exe");48        }49    }50}

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2using System;3{4    {5        static void Main(string[] args)6        {7            Console.WriteLine("Hello World!");8            DebuggerUtility.Trace("Test");9        }10    }11}12using Microsoft.TestPlatform.AttachVS;13using System;14{15    {16        static void Main(string[] args)17        {18            Console.WriteLine("Hello World!");19            DebuggerUtility.Trace("Test");20        }21    }22}23using Microsoft.TestPlatform.AttachVS;24using System;25{26    {27        static void Main(string[] args)28        {29            Console.WriteLine("Hello World!");30            DebuggerUtility.Trace("Test");31        }32    }33}34using Microsoft.TestPlatform.AttachVS;35using System;36{37    {38        static void Main(string[] args)39        {40            Console.WriteLine("Hello World!");41            DebuggerUtility.Trace("Test");42        }43    }44}45using Microsoft.TestPlatform.AttachVS;46using System;47{48    {49        static void Main(string[] args)50        {51            Console.WriteLine("Hello World!");52            DebuggerUtility.Trace("Test");53        }54    }55}56using Microsoft.TestPlatform.AttachVS;57using System;58{59    {60        static void Main(string[] args)61        {62            Console.WriteLine("Hello World!");63            DebuggerUtility.Trace("Test");64        }65    }66}67using Microsoft.TestPlatform.AttachVS;68using System;69{70    {71        static void Main(string[] args)72        {73            Console.WriteLine("Hello World!");74            DebuggerUtility.Trace("Test");75        }76    }77}

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2using System;3using System.Diagnostics;4{5    {6        static void Main(string[] args)7        {8            DebuggerUtility.Trace("Hi");9            Console.WriteLine("Hello World!");10            Console.ReadKey();11        }12    }13}14using Microsoft.TestPlatform.AttachVS;15using System;16using System.Diagnostics;17{18    {19        static void Main(string[] args)20        {21            DebuggerUtility.Trace("Hi");22            Console.WriteLine("Hello World!");23            Console.ReadKey();24        }25    }26}27using Microsoft.TestPlatform.AttachVS;28using System;29using System.Diagnostics;30{31    {32        static void Main(string[] args)33        {34            DebuggerUtility.Trace("Hi");35            Console.WriteLine("Hello World!");36            Console.ReadKey();37        }38    }39}40using Microsoft.TestPlatform.AttachVS;41using System;42using System.Diagnostics;43{44    {45        static void Main(string[] args)46        {47            DebuggerUtility.Trace("Hi");48            Console.WriteLine("Hello World!");49            Console.ReadKey();50        }51    }52}53using Microsoft.TestPlatform.AttachVS;54using System;55using System.Diagnostics;56{57    {58        static void Main(string[] args)59        {60            DebuggerUtility.Trace("Hi");61            Console.WriteLine("Hello World!");62            Console.ReadKey();63        }64    }65}66using Microsoft.TestPlatform.AttachVS;67using System;68using System.Diagnostics;69{70    {71        static void Main(string[] args)72        {73            DebuggerUtility.Trace("Hi");74            Console.WriteLine("Hello World!");75            Console.ReadKey();76        }77    }78}

Trace

Using AI Code Generation

1using System;2using Microsoft.TestPlatform.AttachVS;3{4    {5        static void Main(string[] args)6        {7            Console.WriteLine("Hello World!");8            DebuggerUtility.Trace("AttachVS");9        }10    }11}12using System;13using Microsoft.TestPlatform.AttachVS;14{15    {16        static void Main(string[] args)17        {18            Console.WriteLine("Hello World!");19            DebuggerUtility.AttachVS();20        }21    }22}23using System;24using Microsoft.TestPlatform.AttachVS;25{26    {27        static void Main(string[] args)28        {29            Console.WriteLine("Hello World!");30            DebuggerUtility.AttachVS();31        }32    }33}34using System;35using Microsoft.TestPlatform.AttachVS;36{37    {38        static void Main(string[] args)39        {40            Console.WriteLine("Hello World!");41            DebuggerUtility.AttachVS();42        }43    }44}45using System;46using Microsoft.TestPlatform.AttachVS;47{48    {49        static void Main(string[] args)50        {51            Console.WriteLine("Hello World!");52            DebuggerUtility.AttachVS();53        }54    }55}56using System;57using Microsoft.TestPlatform.AttachVS;58{59    {60        static void Main(string[] args)61        {62            Console.WriteLine("Hello World!");63            DebuggerUtility.AttachVS();64        }65    }66}

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2DebuggerUtility.AttachVS();3using System.Diagnostics;4{5    static void Main()6    {7        Trace.WriteLine("Test");8    }9}10How to: Debug a Remote Process (Command Line)11How to: Debug a Remote Process (Visual Studio)

Trace

Using AI Code Generation

1DebuggerUtility.Trace("1.cs", "TestHost", "TestRunner");2DebuggerUtility.Trace("2.cs", "TestHost", "TestRunner");3DebuggerUtility.Trace("3.cs", "TestHost", "TestRunner");4DebuggerUtility.Trace("4.cs", "TestHost", "TestRunner");5DebuggerUtility.Trace("5.cs", "TestHost", "TestRunner");6DebuggerUtility.Trace("6.cs", "TestHost", "TestRunner");7DebuggerUtility.Trace("7.cs", "TestHost", "TestRunner");8DebuggerUtility.Trace("8.cs", "TestHost", "TestRunner");9DebuggerUtility.Trace("9.cs", "TestHost", "TestRunner");10DebuggerUtility.Trace("10.cs", "TestHost", "TestRunner");

Trace

Using AI Code Generation

1using Microsoft.TestPlatform.AttachVS;2using System;3using System.Diagnostics;4using System.IO;5using System.Threading;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            int processId = 0;12            string filePath = string.Empty;13            if (args.Length == 2)14            {15                processId = Convert.ToInt32(args[0]);16                filePath = args[1];17            }18            if (processId != 0 && !string.IsNullOrEmpty(filePath))19            {20                DebuggerUtility.Trace(processId, filePath);21            }22        }23    }24}25using Microsoft.TestPlatform.AttachVS;26using System;27using System.Diagnostics;28using System.IO;29using System.Threading;30using System.Threading.Tasks;31{32    {33        static void Main(string[] args)34        {35            int processId = 0;36            string filePath = string.Empty;37            if (args.Length == 2)38            {39                processId = Convert.ToInt32(args[0]);40                filePath = args[1];41            }42            if (processId != 0 && !string.IsNullOrEmpty(filePath))43            {44                DebuggerUtility.Trace(processId, filePath);45            }46        }47    }48}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.