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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)

[AttributeUsageAttribute(AttributeTargets.Class)]
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class ConstructorNeedsTagAttribute : 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 sealed class Simple : WebControl 
  {
     private String NameTag = "";

     public Simple(String tag)
      {
            this.NameTag = tag;
      }         

      private String   UserMessage = null;

      // Create a property named ControlValue. 
      public String ControlValue 
      {
         get 
         {
            return UserMessage;
         }
         set 
         {
            UserMessage = value;
         }
      }                



      protected override void Render(HtmlTextWriter output) 
      {
         output.Write("Testing the ConstructorNeedsTagAttribute Class.");
      }
}      

System.Object
  System.Attribute
    System.Web.UI.ConstructorNeedsTagAttribute

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

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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