HtmlGenericControl 服务器控件声明性语法


<span \| body \| div \| font \| others? EnableViewState="False\|True" ID="string" OnDataBinding="OnDataBinding event handler" OnDisposed="OnDisposed" OnInit="OnInit event handler" OnLoad="OnLoad event handler" OnPreRender="OnPreRender event handler" OnServerClick="OnServerClick event handler" OnUnload="OnUnload event handler" runat="server" Visible="False\|True" > contentBetweenTags </span \| body \| div \| font \| others>

<span | body | div | font | others?
    EnableViewState="False|True" 
    ID="string" 
    OnDataBinding="OnDataBinding event handler" 
    OnDisposed="OnDisposed" 
    OnInit="OnInit event handler" 
    OnLoad="OnLoad event handler" 
    OnPreRender="OnPreRender event handler" 
    OnServerClick="OnServerClick event handler" 
    OnUnload="OnUnload event handler"
    runat="server" 
    Visible="False|True" >
    contentBetweenTags 
</span | body | div | font | others>

此控件在服务器上创建，以响应在不直接映射到特定 HTML 控件的元素中包含 runat="server" 属性/值对的标记。这些元素包括 、<body>、<div>、 以及其他元素。此控件通过 TagName 属性将要用作 HTML 控件的特定元素的标记名映射到 ASP.NET。此控件从 HtmlContainerControl 类继承功能，而该类允许您动态地更改 HTML 控件标记的内部内容。

可以使用服务器端  元素来显示事件处理程序代码生成的文本（无论此文本是通过用户输入生成的，还是从事件处理程序指定的源中生成的）。还可以使用 Page_Load 事件生成 span 控件中的文本和 HTML 样式属性，以便在浏览器中显示文本时将文本格式化。

下面的示例演示如何基于 HtmlInputText 控件中的用户输入生成要显示的文本。HtmlGenericControl 是通过在页上声明  元素而创建的，它为  元素提供对 InnerHtml 属性的访问。这使您可以操作分配给  元素的文本字符串。

Visual Basic?	复制代码
<%@ Page Language="VB" AutoEventWireup="True" %> <html> <head> <title>HtmlGenericControl Control</title> <script runat="server"> Sub SubmitBtn_Click(Source As Object, e As EventArgs) MySpan.InnerHtml = "Welcome to ASP.NET, " & myText.Value & "." End Sub </script> </head> <body> <form id="myForm" runat="server"> <p> Enter your name here: <input type="text" id="myText" runat="server"> <br><br> <input id="Submit1" type="submit" Value="Click Here!" OnServerClick="SubmitBtn_Click" runat="server"> <br><br> <b><span id="MySpan" runat="server"/></b> </form> </body> </html>

Visual Basic?

复制代码

<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
<title>HtmlGenericControl Control</title>

   <script runat="server">
      Sub SubmitBtn_Click(Source As Object, e As EventArgs)
         MySpan.InnerHtml = "Welcome to ASP.NET, " & myText.Value & "."
      End Sub
   </script>
   
</head>
<body>
   <form id="myForm" runat="server">
   <p>
   Enter your name here: 
   <input type="text" id="myText" runat="server">
   <br><br>
   <input id="Submit1" type="submit" Value="Click Here!"
          OnServerClick="SubmitBtn_Click" runat="server">
   <br><br>
   <b><span id="MySpan" runat="server"/></b>
   </form>
</body>
</html>

C#?	复制代码
<%@ Page Language="C#" AutoEventWireup="True" %> <html> <head> <title>HtmlGenericControl Control</title> <script runat="server"> void SubmitBtn_Click(object Source, EventArgs e) { MySpan.InnerHtml = "Welcome to ASP.NET, " + myText.Value + "."; } </script> </head> <body> <form id="myForm" runat="server"> <p>Enter your name here: <input type="text" id="myText" runat="server"> <br><br> <input id="Submit1" type="submit" Value="Click Here!" OnServerClick="SubmitBtn_Click" runat="server"> <br><br> <b><span id="MySpan" runat="server"/><b> </form> </body> </html>

C#?

复制代码

  <%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
<title>HtmlGenericControl Control</title>

   <script runat="server">
      void SubmitBtn_Click(object Source, EventArgs e) 
      {
         MySpan.InnerHtml = "Welcome to ASP.NET, " + myText.Value + ".";
      }
   </script>
   
</head>
<body>
   <form id="myForm" runat="server">
   <p>Enter your name here: 
   <input type="text" id="myText" runat="server">
   <br><br>
   <input id="Submit1" type="submit" Value="Click Here!"
          OnServerClick="SubmitBtn_Click" runat="server">
   <br><br>
   <b><span id="MySpan" runat="server"/><b>
   </form>
</body>
</html>

下面的示例演示如何使用 HtmlGenericControl 来允许用户修改页的背景色。它还演示如何使用 AttributeCollection 类以编程方式访问可在任何 HTML 控件上声明的属性。

Visual Basic?	复制代码
<%@ Page Language="VB" AutoEventWireup="True" %> <html> <head> <title>HtmlGenericControl Control</title> <script runat="server"> Sub SubmitBtn_Click(Source As Object, e As EventArgs) Body.Attributes("bgcolor") = ColorSelect.Value End Sub </script> </head> <body id=Body runat="server"> <h3>Updating Styles with the HtmlGenericControl</h3> <form id="Form1" runat="server"> <p> Select a background color for the page: <p> <select id="ColorSelect" runat="server"> <option>White</option> <option>Wheat</option> <option>Gainsboro</option> <option>LemonChiffon</option> </select> <input id="Submit1" type="submit" runat="server" Value="Apply" OnServerClick="SubmitBtn_Click"> </form> </body> </html>

Visual Basic?

复制代码

<%@ Page Language="VB" AutoEventWireup="True" %>
<html>
<head>
<title>HtmlGenericControl Control</title>

   <script runat="server">
      Sub SubmitBtn_Click(Source As Object, e As EventArgs)
         Body.Attributes("bgcolor") = ColorSelect.Value
      End Sub
   </script>
   
</head>

<body id=Body runat="server">

   <h3>Updating Styles with the HtmlGenericControl</h3>

   <form id="Form1" runat="server">
      <p>
      Select a background color for the page: <p>
      <select id="ColorSelect" runat="server">
         <option>White</option>
         <option>Wheat</option>
         <option>Gainsboro</option>
         <option>LemonChiffon</option>
      </select>
      <input id="Submit1" type="submit" runat="server" 
             Value="Apply" OnServerClick="SubmitBtn_Click">
   </form>
</body>
</html>

C#?	复制代码
<%@ Page Language="C#" AutoEventWireup="True" %> <html> <head> <title>HtmlGenericControl Control</title> <script runat="server"> void SubmitBtn_Click(object Source, EventArgs e) { Body.Attributes["bgcolor"] = ColorSelect.Value; } </script> </head> <body id=Body runat="server"> <h3>Updating Styles with the HtmlGenericControl</h3> <form id="Form1" runat="server"> <p> Select a background color for the page: <p> <select id="ColorSelect" runat="server"> <option>White</option> <option>Wheat</option> <option>Gainsboro</option> <option>LemonChiffon</option> </select> <input id="Submit1" type="submit" runat="server" Value="Apply" OnServerClick="SubmitBtn_Click"> </form> </body> </html>

C#?

复制代码

  <%@ Page Language="C#" AutoEventWireup="True" %>
<html>
<head>
<title>HtmlGenericControl Control</title>

   <script runat="server">
      void SubmitBtn_Click(object Source, EventArgs e) 
      {
         Body.Attributes["bgcolor"] = ColorSelect.Value;
      }
   </script>
   
</head>

<body id=Body runat="server">

   <h3>Updating Styles with the HtmlGenericControl</h3>

   <form id="Form1" runat="server">
      <p>
      Select a background color for the page: <p>
      <select id="ColorSelect" runat="server">
         <option>White</option>
         <option>Wheat</option>
         <option>Gainsboro</option>
         <option>LemonChiffon</option>
      </select>
      <input id="Submit1" type="submit" runat="server" 
             Value="Apply" OnServerClick="SubmitBtn_Click">
   </form>
</body>
</html>

参考

HtmlGenericControl

其他资源

HTML 服务器控件

备注

示例

请参见

参考

其他资源