Process.HasExited 屬性

public:
 property bool HasExited { bool get(); };

public bool HasExited { get; }

[System.ComponentModel.Browsable(false)]
public bool HasExited { get; }

member this.HasExited : bool

[<System.ComponentModel.Browsable(false)>]
member this.HasExited : bool

Public ReadOnly Property HasExited As Boolean

屬性值

true 如果元件所參考 Process 的作業系統程序已經終止;否則， false。

屬性

BrowsableAttribute

例外狀況

範例

以下範例啟動一個 Notepad 實例。 接著它會以 2 秒的間隔擷取相關程序的物理記憶體使用量，最多可持續 10 秒。 範例中判斷程序是否在 10 秒內退出。 範例中若程序在 10 秒後仍在運行，則會關閉程序。

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.IO;
using System.Threading;

namespace ProcessSample
{
    class MyProcessClass
    {
        public static void Main()
        {
            try
            {
                using (Process myProcess = Process.Start("Notepad.exe"))
                {
                    // Display physical memory usage 5 times at intervals of 2 seconds.
                    for (int i = 0; i < 5; i++)
                    {
                        if (!myProcess.HasExited)
                        {
                            // Discard cached information about the process.
                            myProcess.Refresh();
                            // Print working set to console.
                            Console.WriteLine($"Physical Memory Usage: {myProcess.WorkingSet}");
                            // Wait 2 seconds.
                            Thread.Sleep(2000);
                        }
                        else
                        {
                            break;
                        }
                    }

                    // Close process by sending a close message to its main window.
                    myProcess.CloseMainWindow();
                    // Free resources associated with process.
                    myProcess.Close();
                }
            }
            catch (Exception e) when (e is Win32Exception || e is FileNotFoundException)
            {
                Console.WriteLine("The following exception was raised: ");
                Console.WriteLine(e.Message);
            }
        }
    }
}

open System.ComponentModel
open System.Diagnostics
open System.IO
open System.Threading


try
    use myProcess = Process.Start "Notepad.exe"
    // Display physical memory usage 5 times at intervals of 2 seconds.
    let mutable i = 0

    while i < 5 && not myProcess.HasExited do
        // Discard cached information about the process.
        myProcess.Refresh()
        // Print working set to console.
        printfn $"Physical Memory Usage: {myProcess.WorkingSet64}"
        // Wait 2 seconds.
        Thread.Sleep 2000
        i <- i + 1
    // Close process by sending a close message to its main window.
    myProcess.CloseMainWindow() |> ignore
    // Free resources associated with process.
    myProcess.Close()
with
| :? Win32Exception
| :? FileNotFoundException as e ->
    printfn "The following exception was raised: "
    printfn $"{e.Message}"

Imports System.ComponentModel
Imports System.Diagnostics
Imports System.IO
Imports System.Threading

Namespace Process_Sample
    Class MyProcessClass

        Public Shared Sub Main()
            Try
                Using myProcess = Process.Start("Notepad.exe")
                    ' Display physical memory usage 5 times at intervals of 2 seconds.
                    Dim i As Integer
                    For i = 0 To 4
                        If Not myProcess.HasExited Then

                            ' Discard cached information about the process.
                            myProcess.Refresh()
                            ' Print working set to console.
                            Console.WriteLine($"Physical Memory Usage: {myProcess.WorkingSet}")
                            ' Wait 2 seconds.
                            Thread.Sleep(2000)
                        Else
                            Exit For
                        End If

                    Next i

                    ' Close process by sending a close message to its main window.
                    myProcess.CloseMainWindow()
                    ' Free resources associated with process.
                    myProcess.Close()
                End Using
            Catch e As Exception When TypeOf e Is Win32Exception Or TypeOf e Is FileNotFoundException
                Console.WriteLine("The following exception was raised: ")
                Console.WriteLine(e.Message)
            End Try
        End Sub
    End Class
End Namespace 'Process_Sample

備註

值為 trueHasExited 表示相關程序已正常或異常終止。 你可以透過呼叫 CloseMainWindow 或 Kill強制相關程序退出。 如果某個 handle 對程序開放，作業系統會在程序退出後釋放程序記憶體，但保留有關程序的管理資訊，例如句柄、退出代碼和退出時間。 要取得這些資訊，你可以使用和ExitCode屬性。ExitTime 這些屬性會自動為由此元件啟動的程序填充。 當 Process 所有與系統程序相關的元件被銷毀，且不再持有退出程序的句柄時，管理資訊才會被釋放。

程序可以獨立於你的程式碼終止。 如果你是用這個元件啟動程序，系統會自動更新 的 HasExited 值，即使相關程序獨立退出。

另請參閱

• ExitCode
• ExitTime
• WaitForExit(Int32)
• EnableRaisingEvents
• OnExited()