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HtmlTextArea 建構函式

  • 參考

定義

命名空間:
System.Web.UI.HtmlControls
組件:
System.Web.dll

初始化 HtmlTextArea 類別的新執行個體。

public:
 HtmlTextArea();
public HtmlTextArea ();
Public Sub New ()

範例

下列程式碼範例示範如何建立 控制項的 HtmlTextArea 實例，並將其放在網頁上。

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server" >
  
  void Page_Load(Object sender, EventArgs e)
  {

    // Create an HtmlTextArea control.
    HtmlTextArea area = new HtmlTextArea();
    area.ID = "TextArea1";
    area.Value = "Enter text here.";
    area.Cols = 20;
    area.Rows = 5;

    // Add the control to the Controls collection of the 
    // PlaceHolder control.
    Place.Controls.Clear();
    Place.Controls.Add(area);

  }
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
   <title>HtmlTextArea Constructor Example</title>
</head>  
<body>

   <form id="form1" runat="server">
  
      <h3>HtmlTextArea Constructor Example</h3> 
  
      <asp:PlaceHolder id="Place" 
                       runat="server"/>
  
   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server" >
  
  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    ' Create an HtmlTextArea control.
    Dim area As HtmlTextArea = New HtmlTextArea()
    area.ID = "TextArea1"
    area.Value = "Enter text here."
    area.Cols = 20
    area.Rows = 5
 
    ' Add the control to the Controls collection of the 
    ' PlaceHolder control.
    Place.Controls.Clear()
    Place.Controls.Add(area)
         
  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
   <title>HtmlTextArea Constructor Example</title>
</head>
<body>

   <form id="form1" runat="server">
  
      <h3>HtmlTextArea Constructor Example</h3> 
  
      <asp:PlaceHolder id="Place" 
                       runat="server"/>
  
   </form>

</body>
</html>

備註

使用此建構函式來建立和初始化 類別的新實例 HtmlTextArea 。

下表顯示 實例 HtmlTextArea 的初始屬性值。

屬性 初始值
TagName 「textarea」 常值字串。

適用於