ClientScriptManager.RegisterStartupScript 方法

定義

命名空間:: System.Web.UI

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

將啟動腳本註冊為物件 Page 。

多載

名稱	Description
RegisterStartupScript(Type, String, String)	透過型別、鍵和腳本字面值，將啟動腳本註冊給 Page 物件。
RegisterStartupScript(Type, String, String, Boolean)	透過型別、鍵、腳本字面值及布林值（指示是否加入腳本標籤）註冊啟動腳本 Page 與物件。

RegisterStartupScript(Type, String, String)

透過型別、鍵和腳本字面值，將啟動腳本註冊給 Page 物件。

public:
 void RegisterStartupScript(Type ^ type, System::String ^ key, System::String ^ script);

public void RegisterStartupScript(Type type, string key, string script);

member this.RegisterStartupScript : Type * string * string -> unit

Public Sub RegisterStartupScript (type As Type, key As String, script As String)

參數

type: Type

啟動腳本要註冊的類型。

key: String

啟動腳本的鍵要註冊。

script: String

啟動腳本要直接註冊。

範例

以下程式碼範例示範了此 RegisterStartupScript 方法的使用。請注意，開頭和結尾腳本標籤都包含在參數中 script 。若要根據額外參數設定新增腳本標籤，請參閱該 RegisterStartupScript 方法。

<%@ 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)
  {
    // Define the name and type of the client scripts on the page.
    String csname1 = "PopupScript";
    Type cstype = this.GetType();
        
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Check to see if the startup script is already registered.
    if (!cs.IsStartupScriptRegistered(cstype, csname1))
    {
        StringBuilder cstext1 = new StringBuilder();
        cstext1.Append("<script type=text/javascript> alert('Hello World!') </");
        cstext1.Append("script>");

        cs.RegisterStartupScript(cstype, csname1, cstext1.ToString());
    }
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>RegisterStartupScript</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </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">
    Public Sub Page_Load(ByVal sender As [Object], ByVal e As EventArgs)
        ' Define the name and type of the client scripts on the page. 
        Dim csname1 As [String] = "PopupScript"
        Dim cstype As Type = Me.[GetType]()
    
        ' Get a ClientScriptManager reference from the Page class. 
        Dim cs As ClientScriptManager = Page.ClientScript
    
        ' Check to see if the startup script is already registered. 
        If Not cs.IsStartupScriptRegistered(cstype, csname1) Then
            Dim cstext1 As New StringBuilder()
            cstext1.Append("<script type=text/javascript> alert('Hello World!') </")
            cstext1.Append("script>")
        
            cs.RegisterStartupScript(cstype, csname1, cstext1.ToString())
        End If
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>RegisterStartupScript</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

備註

用戶端腳本以其鍵與類型唯一識別。具有相同鍵與型別的腳本被視為重複。該頁面只能註冊一個具有特定類型與金鑰對的腳本。嘗試註冊已註冊的腳本不會產生該腳本的重複。

呼叫該 IsStartupScriptRegistered 方法來判斷具有特定金鑰與型態對的啟動腳本是否已註冊，並避免不必要的嘗試新增該腳本。

在這種方法過載 RegisterStartupScript 時，你必須確保參數中 script 提供的腳本被元素區塊包裹 <script> 。

該方法新增 RegisterStartupScript 的腳本區塊會在頁面載入完成但頁面事件被觸發前 OnLoad 執行。腳本區塊不保證會依照註冊順序輸出。如果腳本區塊的順序很重要，可以用 StringBuilder 物件把這些腳本集合成一個字串，然後全部註冊在一個客戶端腳本區塊裡。

另請參閱

RegisterStartupScript(Type, String, String, Boolean)

適用於

RegisterStartupScript(Type, String, String, Boolean)

透過型別、鍵、腳本字面值及布林值（指示是否加入腳本標籤）註冊啟動腳本 Page 與物件。

public:
 void RegisterStartupScript(Type ^ type, System::String ^ key, System::String ^ script, bool addScriptTags);

public void RegisterStartupScript(Type type, string key, string script, bool addScriptTags);

member this.RegisterStartupScript : Type * string * string * bool -> unit

Public Sub RegisterStartupScript (type As Type, key As String, script As String, addScriptTags As Boolean)

參數

type: Type

啟動腳本要註冊的類型。

key: String

啟動腳本的鍵要註冊。

script: String

啟動腳本要直接註冊。

addScriptTags: Boolean

一個布林值，表示是否要加入腳本標籤。

例外狀況

ArgumentNullException

type 是 null。

範例

以下程式碼範例示範了此 RegisterStartupScript 方法的使用。請注意，參數 addScriptTags 設定為， false 因此開始和結尾腳本標籤都包含在參數中 script 。

<%@ 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)
  {
    // Define the name and type of the client scripts on the page.
    String csname1 = "PopupScript";
    String csname2 = "ButtonClickScript";
    Type cstype = this.GetType();
        
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Check to see if the startup script is already registered.
    if (!cs.IsStartupScriptRegistered(cstype, csname1))
    {
      String cstext1 = "alert('Hello World');";
      cs.RegisterStartupScript(cstype, csname1, cstext1, true);
    }

    // Check to see if the client script is already registered.
    if (!cs.IsClientScriptBlockRegistered(cstype, 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>");
      cs.RegisterClientScriptBlock(cstype, csname2, cstext2.ToString(), false);
    }
  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ClientScriptManager 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 System.EventArgs)

    ' Define the name and type of the client scripts on the page.
    Dim csname1 As String = "PopupScript"
    Dim csname2 As String = "ButtonClickScript"
    Dim cstype As Type = Me.GetType()
    
    ' Get a ClientScriptManager reference from the Page class.
    Dim cs As ClientScriptManager = Page.ClientScript

    ' Check to see if the startup script is already registered.
    If (Not cs.IsStartupScriptRegistered(cstype, csname1)) Then
      
      Dim cstext1 As String = "alert('Hello World');"
      cs.RegisterStartupScript(cstype, csname1, cstext1, True)
      
    End If
    
    ' Check to see if the client script is already registered.
    If (Not cs.IsClientScriptBlockRegistered(cstype, 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>")
      cs.RegisterClientScriptBlock(cstype, csname2, cstext2.ToString(), False)
      
    End If
    
  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ClientScriptManager Example</title>
  </head>
  <body>
     <form id="Form1"
         runat="server">
        <input type="text" id="Message" /> <input type="button" value="ClickMe" onclick="DoClick()" />
     </form>
  </body>
</html>

備註

啟動腳本以其金鑰和類型唯一識別。具有相同鍵與型別的腳本被視為重複。該頁面只能註冊一個具有特定類型與金鑰對的腳本。嘗試註冊已註冊的腳本不會產生該腳本的重複。

呼叫該 IsStartupScriptRegistered 方法來判斷具有特定金鑰與型態對的啟動腳本是否已註冊，並避免不必要的嘗試新增該腳本。

在這種方法過RegisterStartupScript載時，你可以用script參數表示參數中提供的<script>腳本是否被元素區塊包裹addScriptTags。設定 addScriptTags 為 true 表示腳本標籤會自動被加入。

另請參閱

適用於

意見反應

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