HttpResponse.AddFileDependencies 方法

定義

將檔案名稱群組加入目前回應所依存的檔案名稱的集合。Adds a group of file names to the collection of file names on which the current response is dependent.

多載

AddFileDependencies(ArrayList)

將檔案名稱群組加入目前回應所依存的檔案名稱的集合。Adds a group of file names to the collection of file names on which the current response is dependent.

AddFileDependencies(String[])

將檔案名稱陣列加入目前回應所依存的檔案名稱的集合。Adds an array of file names to the collection of file names on which the current response is dependent.

AddFileDependencies(ArrayList)

將檔案名稱群組加入目前回應所依存的檔案名稱的集合。Adds a group of file names to the collection of file names on which the current response is dependent.

public:
 void AddFileDependencies(System::Collections::ArrayList ^ filenames);
public void AddFileDependencies (System.Collections.ArrayList filenames);
member this.AddFileDependencies : System.Collections.ArrayList -> unit
Public Sub AddFileDependencies (filenames As ArrayList)

參數

filenames
ArrayList

要加入的檔案集合。The collection of files to add.

範例

下列範例是已快取輸出的 ASP.NET 網頁。The following example is an ASP.NET page that is output cached. 頁面的程式ArrayList代碼會建立檔案路徑的,然後AddFileDependencies在方法的呼叫ArrayList中傳遞做為參數。The code for the page creates an ArrayList of file paths, and then passes the ArrayList as the parameter in a call to the AddFileDependencies method. 如果ArrayList變更中指定的任何檔案,這會使輸出快取的回應無效。This makes the output cached response invalid if any of the files specified in the ArrayList changes.

<%@ Page Language="c#" %>
<%@ outputcache duration="30" varybyparam="none" %>
<%@ Import Namespace="Samples.AspNet.CS" %>

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

    private void Page_Load(object sender, System.EventArgs e) 
    {
        
        // Create variables and assign file paths to them.
        string file1 = Server.MapPath("authors.xml");
        string file2 = Server.MapPath("books.xml");

        // Create an array list to contain the file paths.
        ArrayList fileList = new ArrayList();
        fileList.Add(file1);
    fileList.Add(file2);
            
        // Make the page dependent upon the arrayList.
        Response.AddFileDependencies(fileList);

        // Populate the DataGrids.
        dgAuthors.DataSource = DataHelper.GetAuthorData();
        dgAuthors.DataBind();

        dgBooks.DataSource = DataHelper.GetBookData();
        dgBooks.DataBind();

        lblOutputCacheMsg.Text = DateTime.Now.ToString();

    }

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head>
    <title>PageDataDisplay</title>
  </head>
  <body>  
    <form id="Form1" method="post" runat="server">
      <table>
        <tr>
          <th style="WIDTH: 118px">
            Authors
          </th>
          <td>
            <asp:DataGrid id="dgAuthors" runat="server"></asp:DataGrid>
          </td>
        </tr>
        <tr>
          <th style="WIDTH: 118px">
            Books
          </th>
          <td>
            <asp:DataGrid id="dgBooks" runat="server"></asp:DataGrid>
          </td>
        </tr>
        <tr>
          <td style="WIDTH: 118px">
            The page was generated at:
          </td>
          <td>
            <asp:Label id="lblOutputCacheMsg" runat="server"></asp:Label>
          </td>
        </tr>
      </table>
    </form>
  </body>
</html>
<%@ Page Language="vb" %>
<%@ outputcache duration="30" varybyparam="none" %>
<%@ Import Namespace="Samples.AspNet.VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    Private Sub Page_Load(sender As Object, e As System.EventArgs)
    
       ' Create variable and assign file paths to them.
       Dim file1 As String = Server.MapPath("authors.xml")
       Dim file2 As String = Server.MapPath("books.xml")
    
       ' Create an array list to contain the file paths.
       Dim fileList As New ArrayList()
       fileList.Add(file1)
       fileList.Add(file2)
    
       ' Use the AddFileDependencies method to
       ' invalidate the output cached page if 
       ' one of the files changes.
       Response.AddFileDependencies(fileList)
    
       ' Populate the DataGrids.
       dgAuthors.DataSource = DataHelper.GetAuthorData()
       dgAuthors.DataBind()
    
       dgBooks.DataSource = DataHelper.GetBookData()
       dgBooks.DataBind()
    
       lblOutputCacheMsg.Text = DateTime.Now.ToString()
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>PageDataDisplay</title>
</head>
<body>
    <form id="Form1" method="post" runat="server">
        <table>
            <tbody>
                <tr>
                    <th style="WIDTH: 118px">
                        Authors</th>
                    <td>
                        <asp:DataGrid id="dgAuthors" runat="server"></asp:DataGrid>
                    </td>
                </tr>
                <tr>
                    <th style="WIDTH: 118px">
                        Books</th>
                    <td>
                        <asp:DataGrid id="dgBooks" runat="server"></asp:DataGrid>
                    </td>
                </tr>
                <tr>
                    <td style="WIDTH: 118px">
                        The page was generated at:</td>
                    <td>
                        <asp:Label id="lblOutputCacheMsg" runat="server"></asp:Label>
                    </td>
                </tr>
            </tbody>
        </table>
    </form>
</body>
</html>

另請參閱

AddFileDependencies(String[])

將檔案名稱陣列加入目前回應所依存的檔案名稱的集合。Adds an array of file names to the collection of file names on which the current response is dependent.

public:
 void AddFileDependencies(cli::array <System::String ^> ^ filenames);
public void AddFileDependencies (string[] filenames);
member this.AddFileDependencies : string[] -> unit
Public Sub AddFileDependencies (filenames As String())

參數

filenames
String[]

要加入的檔案陣列。An array of files to add.

範例

下列範例會將檔案名陣列新增至AddFileDependencies檔案相依性清單。The following example adds an array of file names to the AddFileDependencies file dependency list. 如果檔案變更,快取的回應就會失效。If the files changes, the cached response is invalidated.

<%@ Page Language="C#" %>
<%@ Import namespace="System.IO" %>

<script runat="server">
    private void Page_Load()
    {
        String[] FileNames = new String[3];
        FileNames[0] = "Test.txt";
        FileNames[1] = "Test2.txt";
        FileNames[2] = "Test3.txt";
        Response.AddFileDependencies(FileNames);
        Response.Write("File Dependencies sucessfully added!");
    }
          
</script>

<%@ Page Language="VB" %>
<%@ Import namespace="System.IO" %>

<script runat="server">
  
    Sub Page_Load()
        Dim FileNames(2) As String
        FileNames(0) = "Test.txt"
        FileNames(1) = "Test2.txt"
        FileNames(2) = "Test3.txt"
        Response.AddFileDependencies(FileNames)
        Response.Write("File Dependencies sucessfully added!")
    End Sub
          
</script>

另請參閱

適用於