Page.RegisterClientScriptBlock(String, String) 方法

定义

注意

The recommended alternative is ClientScript.RegisterClientScriptBlock(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202

向响应发出客户端脚本块。

public:
 virtual void RegisterClientScriptBlock(System::String ^ key, System::String ^ script);
public virtual void RegisterClientScriptBlock (string key, string script);
[System.Obsolete("The recommended alternative is ClientScript.RegisterClientScriptBlock(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")]
public virtual void RegisterClientScriptBlock (string key, string script);
abstract member RegisterClientScriptBlock : string * string -> unit
override this.RegisterClientScriptBlock : string * string -> unit
[<System.Obsolete("The recommended alternative is ClientScript.RegisterClientScriptBlock(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")>]
abstract member RegisterClientScriptBlock : string * string -> unit
override this.RegisterClientScriptBlock : string * string -> unit
Public Overridable Sub RegisterClientScriptBlock (key As String, script As String)

参数

key
String

标识脚本块的唯一键。

script
String

发送到客户端的脚本的内容。

属性

示例

下面的代码示例演示如何 RegisterClientScriptBlock 将该方法与 IsClientScriptBlockRegistered 该方法结合使用。 如果代码声明块中的 ECMAScript 尚未注册,由RegisterClientScriptBlock该调用决定IsClientScriptBlockRegistered

<%@ Page Language="C#"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  public void Page_Load(Object sender, EventArgs e)
  {
    String csname1 = "PopupScript";
    String csname2 = "ButtonClickScript";

    if (!IsClientScriptBlockRegistered(csname1))
    {
        String cstext1 = "<script type=\"text/javascript\">" +
            "alert('Hello World');</" + "script>";
        RegisterStartupScript(csname1, cstext1);
    }

    if (!IsClientScriptBlockRegistered(csname2))
    {
      StringBuilder cstext2 = new StringBuilder();
      cstext2.Append("<script type=\"text/javascript\"> function DoClick() {");
      cstext2.Append("Form1.Message.value='Text from client script.'} </");
      cstext2.Append("script>");
      RegisterClientScriptBlock(csname2, cstext2.ToString());
    }
  }
</script>
<html  >
  <head>
    <title>RegisterClientScriptBlock Example</title>
  </head>
  <body>
     <form id="Form1"
         runat="server">
        <input type="text" id="Message" /> <input type="button" value="ClickMe" onclick="DoClick()" />
     </form>
  </body>
</html>

<%@ Page Language="VB"  %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        Dim csname1 As String = "PopupScript"

        Dim csname2 As String = "ButtonClickScript"
    
        If Not IsClientScriptBlockRegistered(csname1) Then
            Dim cstext1 As String = "<script type=""text/javascript"">" & _
                "alert('Hello World');</" & "script>"
            RegisterStartupScript(csname1, cstext1)
        End If
    
        If Not IsClientScriptBlockRegistered(csname2) Then
            Dim cstext2 As New StringBuilder()
            cstext2.Append("<script type=""text/javascript""> function DoClick() {")
            cstext2.Append("Form1.Message.value='Text from client script.'} </")
            cstext2.Append("script>")
            RegisterClientScriptBlock(csname2, cstext2.ToString())
        End If
    End Sub
</script>
<html  >
  <head>
    <title>RegisterClientScriptBlock Example</title>
  </head>
  <body>
     <form id="Form1"
         runat="server">
        <input type="text" id="Message" /> <input type="button" value="ClickMe" onclick="DoClick()" />
     </form>
  </body>
</html>

注解

客户端脚本在对象的<form runat= server>元素的开始标记Page后发出。 请务必在参数中指定的script脚本块字符串周围包括开始和结束<script>元素。

由于此方法使用键来标识脚本块,因此每次由其他服务器控制实例请求脚本块时,不必向输出流发出脚本块。 使用键也会降低不同控件的脚本块相互干扰的可能性。

具有相同 key 参数值的任何脚本块都被视为重复项。

备注

请记住,在脚本中包含 HTML 注释标记,以便在请求浏览器不支持脚本时呈现该标记。

RegisterClientScriptBlock 方法已弃用。 请改用 RegisterClientScriptBlock 类中的 ClientScriptManager 方法。

适用于