ConstructorNeedsTagAttribute Class


Specifies that a server control needs a tag name in its constructor.

Namespace:   System.Web.UI
Assembly:  System.Web (in System.Web.dll)


Public NotInheritable Class ConstructorNeedsTagAttribute
	Inherits Attribute


Initializes a new instance of the ConstructorNeedsTagAttribute class.


Initializes a new instance of the ConstructorNeedsTagAttribute class.


Indicates whether a control needs a tag name in its constructor. This property is read-only.


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


This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)


Returns the hash code for this instance.(Inherited from Attribute.)


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


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


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


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

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

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

System_CAPS_pubinterfaceSystem_CAPS_privmethod_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.)


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

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

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

For background information, see Extending Metadata Using Attributes.

' Attach the ConstructorNeedsTagAttribute to the custom Simple
' class, which is derived from the WebControl class. This 
' instance of the ConstructorNeedsTagAttribute class sets the
' NeedsTag property to true.
<ConstructorNeedsTagAttribute(True)>  _
<AspNetHostingPermission(SecurityAction.Demand, _
  Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class Simple
  Inherits WebControl

  Private NameTag As String = ""

  Public Sub New(tag As String)
     Me.NameTag = tag
  End Sub 'NewNew

  Private UserMessage As String = Nothing

  ' Create a property named ControlValue.   
  Public Property ControlValue() As [String]
        Return UserMessage
     End Get
        UserMessage = value
     End Set
  End Property

  Protected Overrides Sub Render(output As HtmlTextWriter)
     output.Write("Testing the ConstructorNeedsTagAttribute Class.")
  End Sub 'Render
End Class 'Simple

.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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