PowerStatus 클래스

정의

네임스페이스:

System.Windows.Forms

어셈블리:

System.Windows.Forms.dll

Source:

PowerStatus.cs

현재 시스템 전원 상태 정보를 나타냅니다.

public ref class PowerStatus

public class PowerStatus

type PowerStatus = class

Public Class PowerStatus

상속

Object

PowerStatus

예제

다음은 컨트롤에 있는 ListBox 클래스의 PowerStatus 모든 속성을 나열하고 목록 항목이 선택되었을 때 컨트롤에 TextBox 연결된 속성의 현재 값을 표시하는 예제입니다.

#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>

using namespace System;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::Drawing;
using namespace System::Reflection;
using namespace System::Windows::Forms;

public ref class PowerStatusBrowserForm: public System::Windows::Forms::Form
{
private:
   System::Windows::Forms::ListBox^ listBox1;
   System::Windows::Forms::TextBox^ textBox1;

public:
   PowerStatusBrowserForm()
   {
      this->SuspendLayout();
      InitForm();

      //Add each property of the PowerStatus class to the list box.
      Type^ t = System::Windows::Forms::PowerStatus::typeid;
      array<PropertyInfo^>^pi = t->GetProperties();
      for ( int i = 0; i < pi->Length; i++ )
         listBox1->Items->Add( pi[ i ]->Name );
      textBox1->Text = String::Format( "The PowerStatus class has {0} properties.\r\n", pi->Length );

      // Configure the list item selected handler for the list box to invoke a 
      // method that displays the value of each property.           
      listBox1->SelectedIndexChanged += gcnew EventHandler( this, &PowerStatusBrowserForm::listBox1_SelectedIndexChanged );
      this->ResumeLayout( false );
   }

private:
   void listBox1_SelectedIndexChanged( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      // Return if no item is selected.
      if ( listBox1->SelectedIndex == -1 )
            return;

      // Get the property name from the list item
      String^ propname = listBox1->Text;

      // Display the value of the selected property of the PowerStatus type.
      Type^ t = System::Windows::Forms::PowerStatus::typeid;
      array<PropertyInfo^>^pi = t->GetProperties();
      PropertyInfo^ prop = nullptr;
      for ( int i = 0; i < pi->Length; i++ )
         if ( pi[ i ]->Name == propname )
         {
            prop = pi[ i ];
            break;
         }

      Object^ propval = prop->GetValue( SystemInformation::PowerStatus, nullptr );
      textBox1->Text = String::Format( "{0}\r\nThe value of the {1} property is: {2}", textBox1->Text, propname, propval );
   }

   void InitForm()
   {
      // Initialize the form settings
      this->listBox1 = gcnew System::Windows::Forms::ListBox;
      this->textBox1 = gcnew System::Windows::Forms::TextBox;
      this->listBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
      this->listBox1->Location = System::Drawing::Point( 8, 16 );
      this->listBox1->Size = System::Drawing::Size( 172, 496 );
      this->listBox1->TabIndex = 0;
      this->textBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right);
      this->textBox1->Location = System::Drawing::Point( 188, 16 );
      this->textBox1->Multiline = true;
      this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical;
      this->textBox1->Size = System::Drawing::Size( 420, 496 );
      this->textBox1->TabIndex = 1;
      this->ClientSize = System::Drawing::Size( 616, 525 );
      this->Controls->Add( this->textBox1 );
      this->Controls->Add( this->listBox1 );
      this->Text = "Select a PowerStatus property to get the value of";
   }
};

[STAThread]
int main()
{
   Application::Run( gcnew PowerStatusBrowserForm );
}

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

namespace PowerStatusBrowser
{
    public class PowerStatusBrowserForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.TextBox textBox1;        
        
        public PowerStatusBrowserForm()
        {
            this.SuspendLayout();
            InitForm();
            
            //Add each property of the PowerStatus class to the list box.
            Type t = typeof(System.Windows.Forms.PowerStatus);            
            PropertyInfo[] pi = t.GetProperties();            
            for( int i=0; i<pi.Length; i++ )
                listBox1.Items.Add( pi[i].Name );            
            textBox1.Text = "The PowerStatus class has "+pi.Length.ToString()+" properties.\r\n";

            // Configure the list item selected handler for the list box to invoke a 
            // method that displays the value of each property.           
            listBox1.SelectedIndexChanged += new EventHandler(listBox1_SelectedIndexChanged);
            this.ResumeLayout(false);
        }
        
        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            // Return if no item is selected.
            if( listBox1.SelectedIndex == -1 ) return;
            // Get the property name from the list item
            string propname = listBox1.Text;
            
            // Display the value of the selected property of the PowerStatus type.
            Type t = typeof(System.Windows.Forms.PowerStatus);
            PropertyInfo[] pi = t.GetProperties();            
            PropertyInfo prop = null;
            for( int i=0; i<pi.Length; i++ )
                if( pi[i].Name == propname )
                {
                    prop = pi[i];
                    break;           
                }

            object propval = prop.GetValue(SystemInformation.PowerStatus, null);            
            textBox1.Text += "\r\nThe value of the "+propname+" property is: "+propval.ToString();
        }

        private void InitForm()
        {
            // Initialize the form settings
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.textBox1 = new System.Windows.Forms.TextBox();            
            this.listBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));
            this.listBox1.Location = new System.Drawing.Point(8, 16);
            this.listBox1.Size = new System.Drawing.Size(172, 496);
            this.listBox1.TabIndex = 0;            
            this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Right)));
            this.textBox1.Location = new System.Drawing.Point(188, 16);
            this.textBox1.Multiline = true;
            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;           
            this.textBox1.Size = new System.Drawing.Size(420, 496);
            this.textBox1.TabIndex = 1;            
            this.ClientSize = new System.Drawing.Size(616, 525);            
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.listBox1);            
            this.Text = "Select a PowerStatus property to get the value of";                   
        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new PowerStatusBrowserForm());
        }
    }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.Drawing
Imports System.Reflection
Imports System.Windows.Forms

Public Class PowerStatusBrowserForm
    Inherits System.Windows.Forms.Form
    Private listBox1 As System.Windows.Forms.ListBox
    Private textBox1 As System.Windows.Forms.TextBox  
    
    Public Sub New()
        Me.SuspendLayout()
        InitForm()
        
        'Add each property of the PowerStatus class to the list box.
        Dim t As Type = GetType(System.Windows.Forms.PowerStatus)
        Dim pi As PropertyInfo() = t.GetProperties()
        Dim i As Integer
        For i = 0 To pi.Length - 1
            listBox1.Items.Add(pi(i).Name)
        Next i
        textBox1.Text = "The PowerStatus class has " + pi.Length.ToString() + " properties." + ControlChars.CrLf
        
        ' Configure the list item selected handler for the list box to invoke a 
        ' method that displays the value of each property.           
        AddHandler listBox1.SelectedIndexChanged, AddressOf listBox1_SelectedIndexChanged
        Me.ResumeLayout(False)
    End Sub
        
    Private Sub listBox1_SelectedIndexChanged(sender As Object, e As EventArgs)
        ' Return if no item is selected.
        If listBox1.SelectedIndex = - 1 Then
            Return
        End If 
        ' Get the property name from the list item
        Dim propname As String = listBox1.Text
        
        ' Display the value of the selected property of the PowerStatus type.
        Dim t As Type = GetType(System.Windows.Forms.PowerStatus)
        Dim pi As PropertyInfo() = t.GetProperties()
        Dim prop As PropertyInfo = Nothing
        Dim i As Integer
        For i = 0 To pi.Length - 1
            If pi(i).Name = propname Then
                prop = pi(i)
                Exit For
            End If
        Next i 
        Dim propval As Object = prop.GetValue(SystemInformation.PowerStatus, Nothing)
        textBox1.Text += ControlChars.CrLf + "The value of the " + propname + " property is: " + propval.ToString()
    End Sub
    
    Private Sub InitForm()
        ' Initialize the form settings
        Me.listBox1 = New System.Windows.Forms.ListBox()
        Me.textBox1 = New System.Windows.Forms.TextBox()
        Me.listBox1.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
        Me.listBox1.Location = New System.Drawing.Point(8, 16)
        Me.listBox1.Size = New System.Drawing.Size(172, 496)
        Me.listBox1.TabIndex = 0
        Me.textBox1.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
        Me.textBox1.Location = New System.Drawing.Point(188, 16)
        Me.textBox1.Multiline = True
        Me.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
        Me.textBox1.Size = New System.Drawing.Size(420, 496)
        Me.textBox1.TabIndex = 1
        Me.ClientSize = New System.Drawing.Size(616, 525)
        Me.Controls.Add(Me.textBox1)
        Me.Controls.Add(Me.listBox1)
        Me.Text = "Select a PowerStatus property to get the value of"
    End Sub    
    
    <STAThread()>  _
    Shared Sub Main()
        Application.Run(New PowerStatusBrowserForm())
    End Sub

End Class

설명

클래스는 PowerStatus 현재 AC 라인 전원 상태, 배터리 충전 상태 및 배터리 충전 상태에 대한 정보를 나타냅니다.

이 클래스는 클래스의 SystemInformation 속성에서 PowerStatus 현재 시스템 전원 정보를 나타내는 데 사용됩니다.

속성

Name	Description
BatteryChargeStatus	현재 배터리 충전 상태를 가져옵니다.
BatteryFullLifetime	기본 배터리 전원의 보고된 전체 충전 수명(초)을 가져옵니다.
BatteryLifePercent	남은 전체 배터리 충전의 대략적인 양을 가져옵니다.
BatteryLifeRemaining	남은 배터리 시간의 대략적인 시간(초)을 가져옵니다.
PowerLineStatus	현재 시스템 전원 상태를 가져옵니다.

추가 정보

• PowerStatus
• SystemInformation
• PowerLineStatus
• BatteryChargeStatus
• PowerState