ManagementObject.Get 方法

定義

命名空間:

System.Management

組件:

System.Management.dll

套件:

System.Management v11.0.0-preview.7.26381.103

綁定到管理物件。

多載

名稱	Description
Get()	將 WMI 類別資訊綁定到管理物件。
Get(ManagementOperationObserver)	非同步綁定管理物件。

備註

.NET Framework 安全性

完全信任當下的來電者。 此成員無法被部分受信任的程式碼使用。 欲了解更多資訊，請參閱 「部分受信任程式碼的函式庫使用」。

Get()

來源:

ManagementObject.cs

將 WMI 類別資訊綁定到管理物件。

public:
 void Get();

public void Get();

member this.Get : unit -> unit

Public Sub Get ()

範例

以下範例 Get 呼叫該方法以取得該 ManagementObject 類別的實例。

using System;
using System.Management;

class Sample
{
    public static int Main(string[] args)
    {
        ManagementObject o =
            new ManagementObject("MyClass.Name='abc'");

        //this causes an implicit Get().
        string s = o["Name"].ToString();

        Console.WriteLine(s);

        //or :

        ManagementObject mObj =
            new ManagementObject("MyClass.Name= 'abc'");
        mObj.Get(); //explicitly
        // Now it is faster because the object
        // has already been retrieved.
        string property = mObj["Name"].ToString();

        Console.WriteLine(property);

        return 0;
    }
}

Imports System.Management

Class Sample_ManagementClass
    Public Overloads Shared Function Main( _
        ByVal args() As String) As Integer

        Dim o As New ManagementObject( _
            "MyClass.Name=""abc""")

        'this causes an implicit Get().
        Dim s As String = o("SomeProperty")

        Console.WriteLine(s)

        'or :

        Dim mObj As New ManagementObject("MyClass.Name= ""abc""")
        mObj.Get()  'explicitly 
        ' Now it is faster because the object
        ' has already been retrieved.
        Dim p As String = mObj("SomeProperty")

        Console.WriteLine(p)

        Return 0
    End Function
End Class

備註

該方法在首次嘗試取得或設定 WMI 物件資訊時會隱含地被呼叫。 使用者也可以自行決定明確調用，以更好地控制取回的時間與方式。

.NET Framework 安全性

完全信任當下的來電者。 此成員無法被部分受信任的程式碼使用。 欲了解更多資訊，請參閱 「部分受信任程式碼的函式庫使用」。

Get(ManagementOperationObserver)

來源:

ManagementObject.cs

非同步綁定管理物件。

public:
 void Get(System::Management::ManagementOperationObserver ^ watcher);

public void Get(System.Management.ManagementOperationObserver watcher);

member this.Get : System.Management.ManagementOperationObserver -> unit

Public Sub Get (watcher As ManagementOperationObserver)

參數

watcher

ManagementOperationObserver

接收操作結果作為事件的物件。

範例

以下範例呼叫該 Get 方法，非同步取得該 ManagementObject 類別的實例。

using System;
using System.Management;

public class AsyncGetExample
{
    public AsyncGetExample()
    {
        ManagementObject o =
            new ManagementObject(
            "Win32_Process.Name='notepad.exe'");

        // Set up handlers for asynchronous get
        ManagementOperationObserver ob =
            new ManagementOperationObserver();
        ob.Completed += new
            CompletedEventHandler(this.Done);

        // Get the object asynchronously
        o.Get(ob);

        // Wait until operation is completed
        while (!this.Completed)
            System.Threading.Thread.Sleep (1000);

        // Here you can use the object
    }

    private bool completed = false;

    private void Done(object sender,
        CompletedEventArgs e)
    {
        Console.WriteLine("async Get completed !");
        completed = true;
    }

    private bool Completed
    {
        get
        {
            return completed;
        }
    }

    public static void Main()
    {
        AsyncGetExample example =
            new AsyncGetExample();
    }
}

Imports System.Management

Class AsyncGetExample

    Public Sub New()

        Dim o As New ManagementObject( _
            "Win32_Process.Name=""notepad.exe""")

        'Set up handlers for asynchronous get
        Dim ob As New ManagementOperationObserver
        AddHandler ob.Completed, AddressOf Me.Done

        'Get the object asynchronously
        o.Get(ob)

        'Wait until operation is completed
        While Not Me.Completed
            System.Threading.Thread.Sleep(1000)
        End While

        'Here you can use the object

    End Sub

    Private _completed As Boolean = False

    Private Sub Done(ByVal sender As Object, _
        ByVal e As CompletedEventArgs)
        Console.WriteLine("async Get completed !")
        _completed = True
    End Sub

    Private ReadOnly Property Completed() As Boolean
        Get
            Return _completed
        End Get
    End Property

    Public Overloads Shared Function Main( _
        ByVal args() As String) As Integer

        Dim example As New AsyncGetExample

        Return 0

    End Function


End Class

備註

方法會發出請求取得物件，然後立即回傳。 操作結果將透過對所提供的監視物件觸發事件傳遞。

.NET Framework 安全性

完全信任當下的來電者。 此成員無法被部分受信任的程式碼使用。 欲了解更多資訊，請參閱 「部分受信任程式碼的函式庫使用」。