Process.Refresh Process.Refresh Process.Refresh Process.Refresh Method

Definizione

Elimina le informazioni relative al processo associato memorizzate nella cache all'interno del componente del processo.Discards any information about the associated process that has been cached inside the process component.

public:
 void Refresh();
public void Refresh ();
member this.Refresh : unit -> unit
Public Sub Refresh ()

Esempi

Nell'esempio seguente viene avviata un'istanza del blocco note.The following example starts an instance of Notepad. Recupera quindi l'utilizzo della memoria fisica del processo associato a intervalli di 2 secondi per un massimo di 10 secondi.It then retrieves the physical memory usage of the associated process at 2 second intervals for a maximum of 10 seconds. L'esempio rileva se il processo viene chiuso prima di 10 secondi.The example detects whether the process exits before 10 seconds have elapsed. L'esempio chiude il processo se è ancora in esecuzione dopo 10 secondi.The example closes the process if it is still running after 10 seconds.

#using <System.dll>

using namespace System;
using namespace System::Diagnostics;
using namespace System::Threading;
int main()
{
   try
   {
      Process^ myProcess;
      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 : {0}", myProcess->WorkingSet.ToString() );
            
            // Wait 2 seconds.
            Thread::Sleep( 2000 );
         }
         else
         {
            break;
         }

      }
      myProcess->CloseMainWindow();
      
      // Free resources associated with process.
      myProcess->Close();
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "The following exception was raised: " );
      Console::WriteLine( e->Message );
   }

}

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);
            }
        }
    }
}
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 'Main
    End Class 'MyProcessClass
End Namespace 'Process_Sample

Commenti

Dopo aver Refresh viene chiamato, la prima richiesta per informazioni su ogni proprietà fa sì che il componente di elaborazione ottenere un nuovo valore dal processo associato.After Refresh is called, the first request for information about each property causes the process component to obtain a new value from the associated process.

Quando un Process è associato a una risorsa di processo, i valori delle proprietà del componente di Process immediatamente vengono popolati in base allo stato del processo associato.When a Process component is associated with a process resource, the property values of the Process are immediately populated according to the status of the associated process. Se le informazioni relative al processo associato viene successivamente modificato, tali modifiche non vengono riflesse nel Process valori memorizzati nella cache del componente.If the information about the associated process subsequently changes, those changes are not reflected in the Process component's cached values. Il Process componente è uno snapshot della risorsa di processo al momento sono associate.The Process component is a snapshot of the process resource at the time they are associated. Per visualizzare i valori correnti per il processo associato, chiamare il Refresh (metodo).To view the current values for the associated process, call the Refresh method.

Sicurezza

LinkDemand
per un'attendibilità totale per il chiamante immediato.for full trust for the immediate caller. Impossibile utilizzare questo membro in codice parzialmente attendibile.This member cannot be used by partially trusted code.

Si applica a