IFeatureSupport.GetVersionPresent(Object) Methode

Definition

Namespace:
System.Windows.Forms
Assembly:
System.Windows.Forms.dll
Quelle:
IFeatureSupport.cs
Quelle:
IFeatureSupport.cs
Quelle:
IFeatureSupport.cs
Quelle:
IFeatureSupport.cs
Quelle:
IFeatureSupport.cs

Ruft die Version des angegebenen Features ab.

public:
 Version ^ GetVersionPresent(System::Object ^ feature);
public Version GetVersionPresent(object feature);
public Version? GetVersionPresent(object feature);
abstract member GetVersionPresent : obj -> Version
Public Function GetVersionPresent (feature As Object) As Version

Parameter

feature
Object

Das Feature, dessen Version angefordert wird.

Gibt zurück

Version

A Version representing the version number of the specified feature; or null if the feature is not installed.

Beispiele

Im folgenden Beispiel wird die OSFeature Implementierung und IFeatureSupport Abfragen für das LayeredWindows Feature verwendet. Die Version wird überprüft, um festzustellen, ob das Feature vorhanden ist null. Das Ergebnis wird in einem Textfeld angezeigt. Dieser Code setzt voraus, dass textBox1 ein Formular erstellt und platziert wurde.

private:
   void LayeredWindows()
   {
      // Gets the version of the layered windows feature.
      Version^ myVersion = OSFeature::Feature->GetVersionPresent(
         OSFeature::LayeredWindows );
      
      // Prints whether the feature is available.
      if ( myVersion != nullptr )
      {
         textBox1->Text = "Layered windows feature is installed.\n";
      }
      else
      {
         textBox1->Text = "Layered windows feature is not installed.\n";
      }

      
      // This is an alternate way to check whether a feature is present.
      if ( OSFeature::Feature->IsPresent( OSFeature::LayeredWindows ) )
      {
         textBox1->Text = String::Concat( textBox1->Text,
            "Again, layered windows feature is installed." );
      }
      else
      {
         textBox1->Text = String::Concat( textBox1->Text,
            "Again, layered windows feature is not installed." );
      }
   }

private void LayeredWindows() {
   // Gets the version of the layered windows feature.
   Version myVersion = OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows);

   // Prints whether the feature is available.
   if (myVersion != null)
      textBox1.Text = "Layered windows feature is installed." + '\n';
   else
      textBox1.Text = "Layered windows feature is not installed." + '\n';

   // This is an alternate way to check whether a feature is present.
   if (OSFeature.Feature.IsPresent(OSFeature.LayeredWindows))
      textBox1.Text += "Again, layered windows feature is installed.";
   else
      textBox1.Text += "Again, layered windows feature is not installed.";
}

Private Sub LayeredWindows()
    ' Gets the version of the layered windows feature.
    Dim myVersion As Version = _
       OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows)
       
    ' Prints whether the feature is available.
    If (myVersion IsNot Nothing) Then
        textBox1.Text = "Layered windows feature is installed." & _
           ControlChars.CrLf
    Else
        textBox1.Text = "Layered windows feature is not installed." & _
           ControlChars.CrLf
    End If 
    'This is an alternate way to check whether a feature is present.
    If OSFeature.Feature.IsPresent(OSFeature.LayeredWindows) Then
        textBox1.Text &= "Again, layered windows feature is installed."
    Else
        textBox1.Text &= "Again, layered windows feature is not installed."
    End If
End Sub

Hinweise

Eine Implementierung dieser Methode finden Sie unter GetVersionPresent.

Gilt für:

Weitere Informationen