DesignerAttribute DesignerAttribute DesignerAttribute DesignerAttribute Class

Definition

Specifies the class used to implement design-time services for a component.

public ref class DesignerAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Class | System.AttributeTargets.Interface, AllowMultiple=true, Inherited=true)]
public sealed class DesignerAttribute : Attribute
type DesignerAttribute = class
    inherit Attribute
Public NotInheritable Class DesignerAttribute
Inherits Attribute
Inheritance
DesignerAttributeDesignerAttributeDesignerAttributeDesignerAttribute
Attributes

Examples

The following example creates a class called MyForm. MyForm has two attributes, a DesignerAttribute that specifies this class uses the DocumentDesigner, and a DesignerCategoryAttribute that specifies the Form category.

[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 'MyForm

The next example creates an instance of MyForm. Then it gets the attributes for the class, extracts the DesignerAttribute, and prints the name of the designer.

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

Remarks

The class you use for the design-time services must implement the IDesigner interface.

Use the DesignerBaseTypeName property to find the designer's base type. Use the DesignerTypeName property to get the name of the type of designer associated with this member.

For more information, see Attributes.

Constructors

DesignerAttribute(String) DesignerAttribute(String) DesignerAttribute(String) DesignerAttribute(String)

Initializes a new instance of the DesignerAttribute class using the name of the type that provides design-time services.

DesignerAttribute(String, String) DesignerAttribute(String, String) DesignerAttribute(String, String) DesignerAttribute(String, String)

Initializes a new instance of the DesignerAttribute class using the designer type and the base class for the designer.

DesignerAttribute(String, Type) DesignerAttribute(String, Type) DesignerAttribute(String, Type) DesignerAttribute(String, Type)

Initializes a new instance of the DesignerAttribute class, using the name of the designer class and the base class for the designer.

DesignerAttribute(Type) DesignerAttribute(Type) DesignerAttribute(Type) DesignerAttribute(Type)

Initializes a new instance of the DesignerAttribute class using the type that provides design-time services.

DesignerAttribute(Type, Type) DesignerAttribute(Type, Type) DesignerAttribute(Type, Type) DesignerAttribute(Type, Type)

Initializes a new instance of the DesignerAttribute class using the types of the designer and designer base class.

Properties

DesignerBaseTypeName DesignerBaseTypeName DesignerBaseTypeName DesignerBaseTypeName

Gets the name of the base type of this designer.

DesignerTypeName DesignerTypeName DesignerTypeName DesignerTypeName

Gets the name of the designer type associated with this designer attribute.

TypeId TypeId TypeId TypeId

Gets a unique ID for this attribute type.

Methods

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Returns whether the value of the given object is equal to the current DesignerAttribute.

GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Returns the hash code for this instance.

GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute() IsDefaultAttribute() IsDefaultAttribute() 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)
Match(Object) Match(Object) Match(Object) Match(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr) _Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr) _Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32) _Attribute.GetTypeInfoCount(UInt32)

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

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) _Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to

See Also