ClientScriptManager.RegisterOnSubmitStatement(Type, String, String) 方法

定義

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

透過型別、鍵和腳本字面值， Page 對物件註冊 OnSubmit 陳述式。 當 被 HtmlForm 提交時，該語句會執行。

public:
 void RegisterOnSubmitStatement(Type ^ type, System::String ^ key, System::String ^ script);
public void RegisterOnSubmitStatement(Type type, string key, string script);
member this.RegisterOnSubmitStatement : Type * string * string -> unit
Public Sub RegisterOnSubmitStatement (type As Type, key As String, script As String)

參數

type
Type

OnSubmit 語句的類型。

key
String

OnSubmit 陳述的鍵來註冊。

script
String

OnSubmit 敘述的腳本直接用於註冊。

例外狀況

ArgumentNullException

type 是 null。

範例

以下程式碼範例示範了此 RegisterOnSubmitStatement 方法的使用。

<%@ 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 script on the page.
    String csname = "OnSubmitScript";
    Type cstype = this.GetType();
        
    // Get a ClientScriptManager reference from the Page class.
    ClientScriptManager cs = Page.ClientScript;

    // Check to see if the OnSubmit statement is already registered.
    if (!cs.IsOnSubmitStatementRegistered(cstype, csname))
    {
      String cstext = "document.write('Text from OnSubmit statement');";
      cs.RegisterOnSubmitStatement(cstype, csname, cstext);
    }

  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>ClientScriptManager Example</title>
  </head>
  <body>
     <form    id="Form1"
            runat="server">
     <input type="submit"
            value="Submit" />
     </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 script on the page.
    Dim csname As String = "OnSubmitScript"
    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 OnSubmit statement is already registered.
    If (Not cs.IsOnSubmitStatementRegistered(cstype, csname)) Then
      
      Dim cstext As String = "document.write('Text from OnSubmit statement.');"
      cs.RegisterOnSubmitStatement(cstype, csname, cstext)
      
    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="submit"
            value="Submit" />
     </form>
  </body>
</html>

備註

OnSubmit 語句以其鍵與類型唯一識別。 具有相同鍵與型別的語句被視為重複。 頁面只能註冊一個具有特定類型與金鑰對的語句。 嘗試註冊已註冊的對帳單不會產生該對帳單的重複。

呼叫該 IsOnSubmitStatementRegistered 方法來判斷 OnSubmit 陳述式是否已註冊為特定金鑰與型態對，避免不必要的新增腳本。

script方法參數RegisterOnSubmitStatement可以包含多個腳本指令，只要它們以分號（;) 適當分隔。

它 RegisterOnSubmitStatement 會在頁面提交前先執行一個腳本，並給你取消提交的機會。

欲了解更多關於 HTML 表單及屬性的 OnSubmit 資訊，請參閱 萬維網聯盟（W3C）網站。

適用於

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