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CodeClass.IsDerivedFrom – vlastnost

Vrátí zda CodeClass objekt má jiný objekt jako base.

Obor názvů:  EnvDTE
Sestavení:  EnvDTE (v EnvDTE.dll)

Syntaxe

'Deklarace
ReadOnly Property IsDerivedFrom ( _
    FullName As String _
) As Boolean
    Get
bool this[
    string FullName
] { get; }
property bool IsDerivedFrom[String^ FullName] {
    bool get (String^ FullName);
}
abstract IsDerivedFrom : bool
Jazyk JScript nepodporuje indexované vlastnosti.

Parametry

  • FullName
    Typ: System.String
    Povinné.Typ hledání původu tohoto typu.

Hodnota vlastnosti

Typ: System.Boolean
Logická hodnota označující true Pokud CodeClass objekt má jiný objekt jako základ; falsePokud jinak.

Poznámky

Poznámka

Deterministický může být po provedení určité typy úprav, což znamená, že jejich hodnoty nelze dovolávat vždy zůstat stejné hodnoty prvků modelu kód jako třídy, struktury, funkce, atributy, delegátů a tak dále. Další informace naleznete v části Změna hodnoty prvku modelu kódu Discovering Code by Using the Code Model (Visual Basic).

Příklady

 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);
    }
}

Zabezpečení rozhraní .NET Framework

Viz také

Odkaz

CodeClass Rozhraní

EnvDTE – obor názvů

Další zdroje

How to: Compile and Run the Automation Object Model Code Examples

Discovering Code by Using the Code Model (Visual Basic)

Discovering Code by Using the Code Model (Visual C#)