PropertyTabAttribute Klasse

Definition

public ref class PropertyTabAttribute : Attribute

[System.AttributeUsage(System.AttributeTargets.All)]
public class PropertyTabAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.All)>]
type PropertyTabAttribute = class
    inherit Attribute

Public Class PropertyTabAttribute
Inherits Attribute

Vererbung

Object

Attribute

PropertyTabAttribute

Attribute

AttributeUsageAttribute

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie mithilfe von PropertyTabAttribute eine Eigenschaftenregisterkarte angegeben wird. Im Codebeispiel wird eine Komponente definiert, die die Eigenschaften einer anderen ausgewählten Komponente nach Typ verfügbar macht.

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

using namespace System;
using namespace System::ComponentModel;
using namespace System::ComponentModel::Design;
using namespace System::Drawing;
using namespace System::IO;
using namespace System::Reflection;
using namespace System::Runtime::Serialization;
using namespace System::Runtime::Serialization::Formatters::Binary;
using namespace System::Windows::Forms;
using namespace System::Windows::Forms::Design;
using namespace System::Security::Permissions;

namespace TypeCategoryTabExample
{
   ref class TypeCategoryTab;

   // forward declaration.
   // This component adds a TypeCategoryTab to the propery browser
   // that is available for any components in the current design mode document.

   [PropertyTabAttribute(TypeCategoryTabExample::TypeCategoryTab::typeid,PropertyTabScope::Document)]
   public ref class TypeCategoryTabComponent: public System::ComponentModel::Component
   {
   public:
      TypeCategoryTabComponent(){}
   };

   // A TypeCategoryTab property tab lists properties by the
   // category of the type of each property.
   public ref class TypeCategoryTab: public PropertyTab
   {
   private:

      // This String^ contains a Base-64 encoded and serialized example property tab image.

      [BrowsableAttribute(true)]
      String^ img;

   public:
      TypeCategoryTab()
      {
         img = "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";
      }

      // Returns the properties of the specified component extended with
      // a CategoryAttribute reflecting the name of the type of the property.
      [ReflectionPermission(SecurityAction::Demand, Flags=ReflectionPermissionFlag::MemberAccess)]
      virtual System::ComponentModel::PropertyDescriptorCollection^ GetProperties( Object^ component, array<System::Attribute^>^attributes ) override
      {
         PropertyDescriptorCollection^ props;
         if ( attributes == nullptr )
                  props = TypeDescriptor::GetProperties( component );
         else
                  props = TypeDescriptor::GetProperties( component, attributes );

         array<PropertyDescriptor^>^propArray = gcnew array<PropertyDescriptor^>(props->Count);
         for ( int i = 0; i < props->Count; i++ )
         {
            // Create a new PropertyDescriptor from the old one, with
            // a CategoryAttribute matching the name of the type.
            array<Attribute^>^temp0 = {gcnew CategoryAttribute( props[ i ]->PropertyType->Name )};
            propArray[ i ] = TypeDescriptor::CreateProperty( props[ i ]->ComponentType, props[ i ], temp0 );

         }
         return gcnew PropertyDescriptorCollection( propArray );
      }

      virtual System::ComponentModel::PropertyDescriptorCollection^ GetProperties( Object^ component ) override
      {
         return this->GetProperties( component, nullptr );
      }

      property String^ TabName 
      {
         // Provides the name for the property tab.
         virtual String^ get() override
         {
            return "Properties by Type";
         }
      }
   };
}

using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms.Design;

namespace TypeCategoryTabExample
{
    // This component adds a TypeCategoryTab to the property browser 
    // that is available for any components in the current design mode document.
    [PropertyTabAttribute(typeof(TypeCategoryTab), PropertyTabScope.Document)]
    public class TypeCategoryTabComponent : System.ComponentModel.Component
    {           
        public TypeCategoryTabComponent()
        {
        }
    }

    // A TypeCategoryTab property tab lists properties by the 
    // category of the type of each property.
    public class TypeCategoryTab : PropertyTab
    {
        public TypeCategoryTab()
        {            
        }

        // Returns the properties of the specified component extended with 
        // a CategoryAttribute reflecting the name of the type of the property.
        public override System.ComponentModel.PropertyDescriptorCollection GetProperties(object component, System.Attribute[] attributes)
        {
            PropertyDescriptorCollection props;
            if( attributes == null )
                props = TypeDescriptor.GetProperties(component);    
            else
                props = TypeDescriptor.GetProperties(component, attributes);    
            
            PropertyDescriptor[] propArray = new PropertyDescriptor[props.Count];            
            for(int i=0; i<props.Count; i++)           
            {                
                // Create a new PropertyDescriptor from the old one, with 
                // a CategoryAttribute matching the name of the type.
                propArray[i] = TypeDescriptor.CreateProperty(props[i].ComponentType, props[i], new CategoryAttribute(props[i].PropertyType.Name));
            }
            return new PropertyDescriptorCollection( propArray );
        }

        public override System.ComponentModel.PropertyDescriptorCollection GetProperties(object component)
        {                     
            return this.GetProperties(component, null);
        }

        // Provides the name for the property tab.
        public override string TabName
        {
            get
            {
                return "Properties by Type";
            }
        }

        // Provides an image for the property tab.
        public override System.Drawing.Bitmap Bitmap
        {
            get
            {
                Bitmap bmp = new Bitmap(@"myproperty.bmp", true);
                return bmp;
            }
        }
    }
}

Hinweise

Mit PropertyTabAttribute können Sie einem Steuerelement eine PropertyGrid neue Eigenschaftenseite hinzufügen. Die PropertyTabAttribute kann zusätzliche Eigenschaftenregisterkarten hinzufügen, um andere Eigenschafteninformationen als den Standardsatz von Eigenschaften einer Komponente verfügbar zu machen.

Konstruktoren

Eigenschaften

Methoden

Explizite Schnittstellenimplementierungen

Gilt für: