HtmlControl.Disabled 属性

定义

获取或设置一个值,该值指示 HTML 服务器控件是否被禁用。Gets or sets a value indicating whether the HTML server control is disabled.

public:
 property bool Disabled { bool get(); void set(bool value); };
public bool Disabled { get; set; }
[System.ComponentModel.TypeConverter(typeof(System.Web.UI.MinimizableAttributeTypeConverter))]
public bool Disabled { get; set; }
member this.Disabled : bool with get, set
Public Property Disabled As Boolean

属性值

如果该控件被禁用,则为 true;否则为 falsetrue if the control is disabled; otherwise, false. 默认值为 falseThe default value is false.

属性

示例

下面的代码示例演示如何使用 Disabled 属性以编程方式启用和禁用 HtmlInputButton 控件。The following code example demonstrates how to use the Disabled property to programmatically enable and disable an HtmlInputButton control.

<%@ 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>HtmlControl Disabled Property Example</title>
<script language="C#" runat="server">
 
      void Submit_Clicked(Object sender, EventArgs e) 
      {
         
         Message.InnerHtml = "You clicked the submit button.";
 
      }        
      
 
      void Enable_Clicked(Object sender, EventArgs e) 
      {

         Message.InnerHtml = "";
         Submit2.Disabled=!Submit2.Disabled;

      }
 
   </script>
</head>
 
<body>
   <form id="form1" method="post" runat="server">

      <h3>HtmlControl Disabled Property Example</h3>

      <input id="Submit1"        
             type="submit"
             value="Enable/Disable Submit Button"
             onserverclick="Enable_Clicked"
             runat="server"/>

      <br /><br />

      <input id="Submit2"        
             type="submit"
             value="Submit"
             onserverclick="Submit_Clicked"
             runat="server"/>
      
      

      <br /><br />

      <span id="Message" 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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>HtmlControl Disabled Property Example</title>
<script language="VB" runat="server">
    Sub Submit_Clicked(sender As Object, e As EventArgs)
        
        Message.InnerHtml = "You clicked the submit button."
    End Sub 'Submit_Clicked
     
    Sub Enable_Clicked(sender As Object, e As EventArgs)
        
        Message.InnerHtml = ""
        Submit2.Disabled = Not Submit2.Disabled
    End Sub 'Enable_Clicked 
  </script>
</head>
 
<body>
   <form id="form1" method="post" runat="server">

      <h3>HtmlControl Disabled Property Example</h3>

      <input id="Submit1"        
             type="submit"
             value="Enable/Disable Submit Button"
             onserverclick="Enable_Clicked"
             runat="server"/>

      <br /><br />

      <input id="Submit2"        
             type="submit"
             value="Submit"
             onserverclick="Submit_Clicked"
             runat="server"/>
      
      

      <br /><br />

      <span id="Message" runat="server"/>  
 
   </form>

</body>
</html>
   

注解

在浏览器中,禁用的元素或控件是只读的,并且具有以下增加的限制:其值不会随窗体一起提交,元素或控件无法接收焦点,并且通过按 tab 键导航文档时将跳过该元素或控件。In the browser, a disabled element or control is read-only, with the following added restrictions: its value is not submitted with the form, the element or control cannot receive focus, and the element or control is skipped when navigating the document by tabbing.

适用于

另请参阅