DesignerAttribute Clase

Definición

public ref class DesignerAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface, AllowMultiple=true, Inherited=true)]
public sealed class DesignerAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface, AllowMultiple=true, Inherited=true)>]
type DesignerAttribute = class
    inherit Attribute

Public NotInheritable Class DesignerAttribute
Inherits Attribute

Herencia

Object

Attribute

DesignerAttribute

Atributos

AttributeUsageAttribute

Ejemplos

En el ejemplo siguiente se crea una clase denominada MyForm. MyForm tiene dos atributos, que DesignerAttribute especifica esta clase usa DocumentDesigner, y que DesignerCategoryAttribute especifica la Form categoría .

[Designer("System.Windows.Forms.Design.DocumentDesigner, System.Windows.Forms.Design.DLL",
IRootDesigner::typeid),
DesignerCategory("Form")]
ref class MyForm: public ContainerControl{
   // Insert code here.
};

[Designer("System.Windows.Forms.Design.DocumentDesigner, System.Windows.Forms.Design.DLL", 
    typeof(IRootDesigner)),
    DesignerCategory("Form")]
public class MyForm : ContainerControl {
    // Insert code here.
}

<Designer("System.Windows.Forms.Design.DocumentDesigner, System.Windows.Forms.Design.DLL", _
    GetType(IRootDesigner)), DesignerCategory("Form")> _
Public Class MyForm
    
    Inherits ContainerControl
    ' Insert code here.
End Class

En el ejemplo siguiente se crea una instancia de MyForm. A continuación, obtiene los atributos de la clase , extrae DesignerAttributey imprime el nombre del diseñador.

int main()
{
   // Creates a new form.
   MyForm^ myNewForm = gcnew MyForm;

   // Gets the attributes for the collection.
   AttributeCollection^ attributes = TypeDescriptor::GetAttributes( myNewForm );

   /* Prints the name of the designer by retrieving the DesignerAttribute
       * from the AttributeCollection. */
   DesignerAttribute^ myAttribute = dynamic_cast<DesignerAttribute^>(attributes[ DesignerAttribute::typeid ]);
   Console::WriteLine( "The designer for this class is: {0}", myAttribute->DesignerTypeName );
   return 0;
}

public static int Main() {
    // Creates a new form.
    MyForm myNewForm = new MyForm();
 
    // Gets the attributes for the collection.
    AttributeCollection attributes = TypeDescriptor.GetAttributes(myNewForm);
 
    /* Prints the name of the designer by retrieving the DesignerAttribute
     * from the AttributeCollection. */
    DesignerAttribute myAttribute = 
       (DesignerAttribute)attributes[typeof(DesignerAttribute)];
    Console.WriteLine("The designer for this class is: " + myAttribute.DesignerTypeName);
  
    return 0;
}

Public Shared Function Main() As Integer
    ' Creates a new form.
    Dim myNewForm As New MyForm()
    
    ' Gets the attributes for the collection.
    Dim attributes As AttributeCollection = TypeDescriptor.GetAttributes(myNewForm)
    
    ' Prints the name of the designer by retrieving the DesignerAttribute
    ' from the AttributeCollection. 
    Dim myAttribute As DesignerAttribute = _
        CType(attributes(GetType(DesignerAttribute)), DesignerAttribute)
    Console.WriteLine(("The designer for this class is: " & myAttribute.DesignerTypeName))
    
    Return 0
End Function 'Main

Comentarios

La clase que use para los servicios en tiempo de diseño debe implementar la IDesigner interfaz .

Use la DesignerBaseTypeName propiedad para buscar el tipo base del diseñador. Utilice la DesignerTypeName propiedad para obtener el nombre del tipo de diseñador asociado a este miembro.

Para obtener más información, consulte Attributes (Atributos).

Constructores

Propiedades

Métodos

Implementaciones de interfaz explícitas

Se aplica a

Consulte también

• Attribute