PropertyTabAttribute Class
 
System_CAPS_noteNote

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Identifies the property tab or tabs to display for the specified class or classes.

Namespace:   System.ComponentModel
Assembly:  System (in System.dll)

SystemObject
   SystemAttribute
    System.ComponentModelPropertyTabAttribute

[AttributeUsageAttribute(AttributeTargets.All)]
public class PropertyTabAttribute : Attribute
[AttributeUsageAttribute(AttributeTargets::All)]
public ref class PropertyTabAttribute : Attribute
[<AttributeUsageAttribute(AttributeTargets.All)>]
type PropertyTabAttribute = 
    class
        inherit Attribute
    end
<AttributeUsageAttribute(AttributeTargets.All)>
Public Class PropertyTabAttribute
	Inherits Attribute
NameDescription
System_CAPS_pubmethod PropertyTabAttribute

Initializes a new instance of the PropertyTabAttribute class.

System_CAPS_pubmethod PropertyTabAttribute

Initializes a new instance of the PropertyTabAttribute class using the specified tab class name.

System_CAPS_pubmethod PropertyTabAttribute

Initializes a new instance of the PropertyTabAttribute class using the specified tab class name and tab scope.

System_CAPS_pubmethod PropertyTabAttribute

Initializes a new instance of the PropertyTabAttribute class using the specified type of tab.

System_CAPS_pubmethod PropertyTabAttribute

Initializes a new instance of the PropertyTabAttribute class using the specified type of tab and tab scope.

NameDescription
System_CAPS_pubproperty

Gets the types of tabs that this attribute uses.

System_CAPS_protproperty

Gets the names of the tab classes that this attribute uses.

System_CAPS_pubproperty

Gets an array of tab scopes of each tab of this PropertyTabAttribute.

System_CAPS_pubproperty

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethod Equals

Returns a value indicating whether this instance is equal to a specified object.(Overrides AttributeEquals.)

System_CAPS_pubmethod Equals

Returns a value indicating whether this instance is equal to a specified attribute.

System_CAPS_protmethod Finalize

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethod GetHashCode

Gets the hash code for this object.(Overrides AttributeGetHashCode.)

System_CAPS_pubmethod GetType

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethod InitializeArrays

Initializes the attribute using the specified names of tab classes and array of tab scopes.

System_CAPS_protmethod InitializeArrays

Initializes the attribute using the specified names of tab classes and array of tab scopes.

System_CAPS_pubmethod IsDefaultAttribute

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethod Match

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_protmethod MemberwiseClone

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethod ToString

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetIDsOfNames

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfo

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfoCount

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeInvoke

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

The PropertyTabAttribute lets you add a new property page to a PropertyGrid control. The PropertyTabAttribute can add additional property tabs to expose property information other than a component's default set of properties.

The following code example demonstrates how to use the PropertyTabAttribute to specify a property tab. The code example defines a component that exposes the properties of another selected component by type.

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Windows.Forms;
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.
    [System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")] 
    public class TypeCategoryTab : PropertyTab
    {
        [BrowsableAttribute(true)]
        // This string contains a Base-64 encoded and serialized example property tab image.
        private string img = "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";

        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(DeserializeFromBase64Text(img));
                return bmp;
            }
        }

        // This method can be used to retrieve an Image from a block of Base64-encoded text.
        private Image DeserializeFromBase64Text(string text)
        {
            Image img = null;
            byte[] memBytes = Convert.FromBase64String(text);
            IFormatter formatter = new BinaryFormatter();
            MemoryStream stream = new MemoryStream(memBytes);
            img = (Image)formatter.Deserialize(stream);
            stream.Close();
            return img;
        }
    }
}
Imports System
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Drawing
Imports System.IO
Imports System.Reflection
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Formatters.Binary
Imports System.Windows.Forms
Imports System.Windows.Forms.Design

' This component adds a TypeCategoryTab to the property browser
' that is available for any components in the current design mode document.
<PropertyTabAttribute(GetType(TypeCategoryTab), PropertyTabScope.Document)>  _
Public Class TypeCategoryTabComponent
   Inherits System.ComponentModel.Component

   Public Sub New()
    End Sub
End Class

' A TypeCategoryTab property tab lists properties by the 
' category of the type of each property.
<System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
Public Class TypeCategoryTab
    Inherits PropertyTab

    ' This string contains a Base-64 encoded and serialized example property tab image.
    <BrowsableAttribute(True)> _
    Private img As String = "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"

    Public Sub New()
    End Sub

    ' Returns the properties of the specified component extended with 
    ' a CategoryAttribute reflecting the name of the type of the property.
    Public Overloads Overrides Function GetProperties(ByVal component As Object, ByVal attributes() As System.Attribute) As System.ComponentModel.PropertyDescriptorCollection
        Dim props As PropertyDescriptorCollection
        If attributes Is Nothing Then
            props = TypeDescriptor.GetProperties(component)
        Else
            props = TypeDescriptor.GetProperties(component, attributes)
        End If
        Dim propArray(props.Count - 1) As PropertyDescriptor
        Dim i As Integer
        For i = 0 To props.Count - 1
            ' 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))
        Next i
        Return New PropertyDescriptorCollection(propArray)
    End Function

    Public Overloads Overrides Function GetProperties(ByVal component As Object) As System.ComponentModel.PropertyDescriptorCollection
        Return Me.GetProperties(component, Nothing)
    End Function

    ' Provides the name for the property tab.
    Public Overrides ReadOnly Property TabName() As String
        Get
            Return "Properties by Type"
        End Get
    End Property

    ' Provides an image for the property tab.
    Public Overrides ReadOnly Property Bitmap() As System.Drawing.Bitmap
        Get
            Dim bmp As New Bitmap(DeserializeFromBase64Text(img))
            Return bmp
        End Get
    End Property

    ' This method can be used to retrieve an Image from a block of Base64-encoded text.
    Private Function DeserializeFromBase64Text(ByVal [text] As String) As Image
        Dim img As Image = Nothing
        Dim memBytes As Byte() = Convert.FromBase64String([text])
        Dim formatter As New BinaryFormatter()
        Dim stream As New MemoryStream(memBytes)
        img = CType(formatter.Deserialize(stream), Image)
        stream.Close()
        Return img
    End Function
End Class
#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";
         }
      }

      property System::Drawing::Bitmap^ Bitmap 
      {
         // Provides an image for the property tab.
         virtual System::Drawing::Bitmap^ get() override
         {
            System::Drawing::Bitmap^ bmp = gcnew System::Drawing::Bitmap( DeserializeFromBase64Text( img ) );
            return bmp;
         }
      }

   private:

      // This method can be used to retrieve an Image from a block of Base64-encoded text.
      Image^ DeserializeFromBase64Text( String^ text )
      {
         Image^ img = nullptr;
         array<Byte>^memBytes = Convert::FromBase64String( text );
         IFormatter^ formatter = gcnew BinaryFormatter;
         MemoryStream^ stream = gcnew MemoryStream( memBytes );
         img = dynamic_cast<Image^>(formatter->Deserialize( stream ));
         stream->Close();
         return img;
      }
   };
}
.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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