ConstructorNeedsTagAttribute.NeedsTag プロパティ

コントロールのコンストラクタにタグ名が必要かどうかを示します。このプロパティは読み取り専用です。

Public ReadOnly Property NeedsTag As Boolean
[C#]
public bool NeedsTag {get;}
[C++]
public: __property bool get_NeedsTag();
[JScript]
public function get NeedsTag() : Boolean;

プロパティ値

コントロールのコンストラクタにタグが必要な場合は true 。既定値は false です。

使用例

 
' 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)>  _
Public Class Simple
  Inherits WebControl

  Private NameTag As String = ""
  
  
  Public Sub New(tag As String)
     Me.NameTag = tag
  End Sub 'New
  
  Private UserMessage As String = Nothing
  
  ' Create a property named ControlValue.   
  Public Property ControlValue() As [String]
     Get
        Return UserMessage
     End Get
     Set
        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

[C#] 

     // 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)]

      public 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.");
         }
   }      

[C++] 

// 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)]

public __gc class Simple : public WebControl {
private:
   String*  NameTag;

public:
   Simple(String* tag) {
      this->NameTag = tag;
   }

private:
   String* UserMessage;

   // Create a property named ControlValue.
public:
   __property String* get_ControlValue() {
      return UserMessage;
   }
   __property void set_ControlValue(String* value) {
      UserMessage = value;
   }

protected:
   void Render(HtmlTextWriter* output) {
      output->Write(S"Testing the ConstructorNeedsTagAttribute Class.");
   }
};

[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン をクリックします。

必要条件

プラットフォーム: Windows 2000, Windows XP Professional, Windows Server 2003 ファミリ

参照

ConstructorNeedsTagAttribute クラス | ConstructorNeedsTagAttribute メンバ | System.Web.UI 名前空間