Process.ExitCode 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取关联进程终止时指定的值。
public:
property int ExitCode { int get(); };public int ExitCode { get; }[System.ComponentModel.Browsable(false)]
public int ExitCode { get; }member this.ExitCode : int[<System.ComponentModel.Browsable(false)>]
member this.ExitCode : intPublic ReadOnly Property ExitCode As Integer属性值
关联进程终止时指定的代码。
- 属性
例外
你正尝试访问在远程计算机上运行的进程的 ExitCode 属性。 此属性仅可用于本地计算机上运行的进程。
示例
以下示例启动记事本的实例。 然后，该示例检索并显示关联进程的各种属性。 该示例检测进程何时退出，并显示进程的退出代码。
#using <system.dll>
using namespace System;
using namespace System::Diagnostics;
int main()
{
// Define variables to track the peak
// memory usage of the process.
_int64 peakPagedMem = 0,peakWorkingSet = 0,peakVirtualMem = 0;
Process^ myProcess = nullptr;
try
{
// Start the process.
myProcess = Process::Start( "NotePad.exe" );
// Display the process statistics until
// the user closes the program.
do
{
if ( !myProcess->HasExited )
{
// Refresh the current process property values.
myProcess->Refresh();
Console::WriteLine();
// Display current process statistics.
Console::WriteLine( "{0} -", myProcess );
Console::WriteLine( "-------------------------------------" );
Console::WriteLine( " physical memory usage: {0}", myProcess->WorkingSet64 );
Console::WriteLine( " base priority: {0}", myProcess->BasePriority );
Console::WriteLine( " priority class: {0}", myProcess->PriorityClass );
Console::WriteLine( " user processor time: {0}", myProcess->UserProcessorTime );
Console::WriteLine( " privileged processor time: {0}", myProcess->PrivilegedProcessorTime );
Console::WriteLine( " total processor time: {0}", myProcess->TotalProcessorTime );
Console::WriteLine(" PagedSystemMemorySize64: {0}", myProcess->PagedSystemMemorySize64);
Console::WriteLine(" PagedMemorySize64: {0}", myProcess->PagedMemorySize64);
// Update the values for the overall peak memory statistics.
peakPagedMem = myProcess->PeakPagedMemorySize64;
peakVirtualMem = myProcess->PeakVirtualMemorySize64;
peakWorkingSet = myProcess->PeakWorkingSet64;
if ( myProcess->Responding )
{
Console::WriteLine( "Status = Running" );
}
else
{
Console::WriteLine( "Status = Not Responding" );
}
}
}
while ( !myProcess->WaitForExit( 1000 ) );
Console::WriteLine();
Console::WriteLine( "Process exit code: {0}", myProcess->ExitCode );
// Display peak memory statistics for the process.
Console::WriteLine( "Peak physical memory usage of the process: {0}", peakWorkingSet );
Console::WriteLine( "Peak paged memory usage of the process: {0}", peakPagedMem );
Console::WriteLine( "Peak virtual memory usage of the process: {0}", peakVirtualMem );
}
finally
{
if ( myProcess != nullptr )
{
myProcess->Close();
}
}
}
using System;
using System.Diagnostics;
namespace ProcessSample
{
class ProcessMonitorSample
{
public static void Main()
{
// Define variables to track the peak
// memory usage of the process.
long peakPagedMem = 0,
peakWorkingSet = 0,
peakVirtualMem = 0;
// Start the process.
using (Process myProcess = Process.Start("NotePad.exe"))
{
// Display the process statistics until
// the user closes the program.
do
{
if (!myProcess.HasExited)
{
// Refresh the current process property values.
myProcess.Refresh();
Console.WriteLine();
// Display current process statistics.
Console.WriteLine($"{myProcess} -");
Console.WriteLine("-------------------------------------");
Console.WriteLine($" Physical memory usage : {myProcess.WorkingSet64}");
Console.WriteLine($" Base priority : {myProcess.BasePriority}");
Console.WriteLine($" Priority class : {myProcess.PriorityClass}");
Console.WriteLine($" User processor time : {myProcess.UserProcessorTime}");
Console.WriteLine($" Privileged processor time : {myProcess.PrivilegedProcessorTime}");
Console.WriteLine($" Total processor time : {myProcess.TotalProcessorTime}");
Console.WriteLine($" Paged system memory size : {myProcess.PagedSystemMemorySize64}");
Console.WriteLine($" Paged memory size : {myProcess.PagedMemorySize64}");
// Update the values for the overall peak memory statistics.
peakPagedMem = myProcess.PeakPagedMemorySize64;
peakVirtualMem = myProcess.PeakVirtualMemorySize64;
peakWorkingSet = myProcess.PeakWorkingSet64;
if (myProcess.Responding)
{
Console.WriteLine("Status = Running");
}
else
{
Console.WriteLine("Status = Not Responding");
}
}
}
while (!myProcess.WaitForExit(1000));
Console.WriteLine();
Console.WriteLine($" Process exit code : {myProcess.ExitCode}");
// Display peak memory statistics for the process.
Console.WriteLine($" Peak physical memory usage : {peakWorkingSet}");
Console.WriteLine($" Peak paged memory usage : {peakPagedMem}");
Console.WriteLine($" Peak virtual memory usage : {peakVirtualMem}");
}
}
}
}
Imports System.Diagnostics
Namespace ProcessSample
Class ProcessMonitorSample
Public Shared Sub Main()
' Define variables to track the peak
' memory usage of the process.
Dim peakPagedMem As Long = 0
Dim peakWorkingSet As Long = 0
Dim peakVirtualMem As Long = 0
' Start the process.
Using myProcess = Process.Start("NotePad.exe")
' Display process statistics until
' the user closes the program.
Do
If Not myProcess.HasExited Then
' Refresh the current process property values.
myProcess.Refresh()
Console.WriteLine()
' Display current process statistics.
Console.WriteLine($"{myProcess} -")
Console.WriteLine("-------------------------------------")
Console.WriteLine($" Physical memory usage : {myProcess.WorkingSet64}")
Console.WriteLine($" Base priority : {myProcess.BasePriority}")
Console.WriteLine($" Priority class : {myProcess.PriorityClass}")
Console.WriteLine($" User processor time : {myProcess.UserProcessorTime}")
Console.WriteLine($" Privileged processor time : {myProcess.PrivilegedProcessorTime}")
Console.WriteLine($" Total processor time : {myProcess.TotalProcessorTime}")
Console.WriteLine($" Paged system memory size : {myProcess.PagedSystemMemorySize64}")
Console.WriteLine($" Paged memory size : {myProcess.PagedMemorySize64}")
' Update the values for the overall peak memory statistics.
peakPagedMem = myProcess.PeakPagedMemorySize64
peakVirtualMem = myProcess.PeakVirtualMemorySize64
peakWorkingSet = myProcess.PeakWorkingSet64
If myProcess.Responding Then
Console.WriteLine("Status = Running")
Else
Console.WriteLine("Status = Not Responding")
End If
End If
Loop While Not myProcess.WaitForExit(1000)
Console.WriteLine()
Console.WriteLine($" Process exit code : {myProcess.ExitCode}")
' Display peak memory statistics for the process.
Console.WriteLine($" Peak physical memory usage of the process : {peakWorkingSet}")
Console.WriteLine($" Peak paged memory usage of the process : {peakPagedMem}")
Console.WriteLine($" Peak virtual memory usage of the process : {peakVirtualMem}")
End Using
End Sub
End Class
End Namespace
注解
使用 ExitCode 获取系统进程退出时返回的状态。 可以使用退出代码，这与过程中的 main() 整数返回值非常类似。
进程 ExitCode 的值反映了应用程序开发人员为该过程实现的特定约定。 如果使用退出代码值在代码中做出决策，请确保知道应用程序进程使用的退出代码约定。
开发人员通常以 ExitCode 零值指示成功退出，并通过调用方法可用于识别异常进程终止原因的非零值指定错误。 没有必要遵循这些准则，但它们是惯例。
如果尝试在进程退出之前获取 ExitCode ，则尝试将引发异常。 首先检查 HasExited 属性以验证关联的进程是否已终止。
注意
当标准输出已重定向到异步事件处理程序时，在返回 true时HasExited，输出处理可能尚未完成。 若要确保异步事件处理已完成，请在 WaitForExit() 检查 之前调用不采用任何参数的 HasExited重载。
可以使用 CloseMainWindow 或 Kill 方法使关联的进程退出。
当关联进程退出时，可通过两种方式获得通知：同步和异步。 同步通知依赖于调用 WaitForExit 方法来暂停应用程序的处理，直到关联的组件退出。 异步通知依赖于 Exited 事件。 使用异步通知时， EnableRaisingEvents 必须设置为 true ，组件 Process 才能接收进程已退出的通知。
