CodeClass.IsDerivedFrom[String] Eigenschaft
Definition
Wichtig
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Gibt zurück, ob ein- CodeClass Objekt ein anderes Objekt als Basis hat.
public:
property bool IsDerivedFrom[System::String ^] { bool get(System::String ^ FullName); };
[System.Runtime.InteropServices.DispId(43)]
public bool IsDerivedFrom[string FullName] { [System.Runtime.InteropServices.DispId(43)] get; }
[<System.Runtime.InteropServices.DispId(43)>]
[<get: System.Runtime.InteropServices.DispId(43)>]
member this.IsDerivedFrom(string) : bool
Public ReadOnly Property IsDerivedFrom(FullName As String) As Boolean
Parameter
- FullName
- String
Erforderlich. Der Typ, nach dem in der Herkunft dieses Typs gesucht werden soll.
Eigenschaftswert
Ein boolescher Wert, der angibt true , ob ein CodeClass -Objekt ein anderes Objekt als Basis hat; false andernfalls.
- Attribute
Beispiele
Sub IsDerivedFromExample(ByVal dte As DTE2)
' Before running this example, open a code document from a project.
Try
Dim projItem As ProjectItem = dte.ActiveDocument.ProjectItem
Dim cm As CodeModel = projItem.ContainingProject.CodeModel
' Create a new class.
Dim cls1 As CodeClass = cm.AddClass("BaseClass", projItem.Name)
' Derive a class from the newly created class.
Dim bases() As Object = {cls1.FullName}
Dim cls2 As CodeClass = cm.AddClass("DerivedClass", _
projItem.Name, -1, bases)
Dim derived As String
If cls1.IsDerivedFrom(cls2.FullName) Then
derived &= cls1.Name & " is derived from " & _
cls2.Name & vbCrLf
Else
derived &= cls1.Name & " is not derived from " & _
cls2.Name & vbCrLf
End If
If cls2.IsDerivedFrom(cls1.FullName) Then
derived &= cls2.Name & " is derived from " & _
cls1.Name & vbCrLf
Else
derived &= cls2.Name & " is not derived from " & _
cls1.Name & vbCrLf
End If
MsgBox(derived)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
public void IsDerivedFromExample(DTE2 dte)
{
// Before running this example, open a code document from
// a project.
try
{
ProjectItem projItem = dte.ActiveDocument.ProjectItem;
CodeModel cm = projItem.ContainingProject.CodeModel;
// Create a new class.
CodeClass cls1 = cm.AddClass("BaseClass", projItem.Name, -1,
null, null, vsCMAccess.vsCMAccessPublic);
// Derive a class from the newly created class.
object[] bases = {cls1.FullName};
CodeClass cls2 = cm.AddClass("DerivedClass", projItem.Name, -1,
bases, null, vsCMAccess.vsCMAccessPublic);
string derived = "";
if (cls1.IsDerivedFrom(cls2.FullName))
derived += cls1.Name + " is derived from " +
cls2.Name + "\n";
else
derived += cls1.Name + " is not derived from " +
cls2.Name + "\n";
if (cls2.IsDerivedFrom(cls1.FullName))
derived += cls2.Name + " is derived from " +
cls1.Name + "\n";
else
derived += cls2.Name + " is not derived from " +
cls1.Name + "\n";
MessageBox.Show(derived);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
Hinweise
Hinweis
Die Werte von Codemodellelementen wie z. B. Klassen, Strukturen, Funktionen, Attributen Delegaten usw. sind nach bestimmten Änderungen unter Umständen nicht deterministisch, d. h. deren Werte bleiben nicht zuverlässig immer gleich. Weitere Informationen finden Sie im Abschnitt Code Modell Element-Werte können sich in ermitteln von Code mithilfe des Code Modells (Visual Basic)ändern.