共用方式為

WebResourceAttribute.PerformSubstitution 屬性

  • 參考

定義

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

取得或設定布林值，判斷處理 WebResourceAttribute 類別所參考的內嵌資源期間，是否剖析其他 Web 資源 URL 並取代成資源的完整路徑。

public:
 property bool PerformSubstitution { bool get(); void set(bool value); };
public bool PerformSubstitution { get; set; }
member this.PerformSubstitution : bool with get, set
Public Property PerformSubstitution As Boolean

屬性值

Boolean

如果處理資源期間會解析內嵌資源，則為 true，否則為 false。 預設為 false。

範例

下列程式碼範例示範如何查詢 屬性的值 PerformSubstitution 。 在此範例中 WebResourceAttribute ，HTML 檔案Help.htm的 屬性定義 PerformSubstitution 為 的 屬性 true 。

此程式碼範例是針對 類別提供的較大範例的 WebResourceAttribute 一部分。

<%@ Page Language="C#" %>
<%@ Register TagPrefix="AspNetSamples" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS.Controls" %>
<%@ Import Namespace="System.Reflection" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

  protected void Page_Load(object sender, EventArgs e)
  {
            
    // Get the assembly metatdata.
    Type clsType = typeof(MyCustomControl);
    Assembly a = clsType.Assembly;

    // Iterate through the attributes for the assembly.
    foreach (Attribute attr in Attribute.GetCustomAttributes(a))
    {
      //Check for WebResource attributes.
      if (attr.GetType() == typeof(WebResourceAttribute))
      {
        WebResourceAttribute wra = (WebResourceAttribute)attr;
        Response.Write("Resource in the assembly: " + wra.WebResource.ToString() +
          " with ContentType = " + wra.ContentType.ToString() +
          " and PerformsSubstitution = " + wra.PerformSubstitution.ToString() + "</br>");
      }
    }
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>WebResourceAttribute Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <AspNetSamples:MyCustomControl id="MyCustomControl1" runat="server">
      </AspNetSamples:MyCustomControl>    
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" %>
<%@ Register TagPrefix="AspNetSamples" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB.Controls" %>
<%@ Import Namespace="System.Reflection" %>

<!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)

    ' Get the assembly metatdata.
    Dim clsType As Type = GetType(MyCustomControl)
    Dim a As Assembly = clsType.Assembly
    
    For Each attr As Attribute In Attribute.GetCustomAttributes(a)
      'Check for WebResource attributes.
      If attr.GetType() Is GetType(WebResourceAttribute) Then
        Dim wra As WebResourceAttribute = CType(attr, WebResourceAttribute)
        Response.Write("Resource in the assembly: " & wra.WebResource.ToString() & _
        " with ContentType = " & wra.ContentType.ToString() & _
        " and PerformsSubstitution = " & wra.PerformSubstitution.ToString() & "</br>")
      End If
    Next attr
    
    
  End Sub
  
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>WebResourceAttribute Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <AspNetSamples:MyCustomControl id="MyCustomControl1" runat="server">
      </AspNetSamples:MyCustomControl>    
    </div>
    </form>
</body>
</html>

接下來會顯示可用於此範例的 HTML Web 資源範例。 請注意， WebResource 當您將 資源的 屬性 true 設定 PerformSubstitution 為 時，會使用 語法。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html >

<head>

<title>Included Help Page</title>

</head>

<body>

<div>

<img alt="help image" src=<% = WebResource("image1.jpg") %> />

Included help file.

</div>

</body>

</html>

備註

當資源從元件串流至回應時，如果 PerformSubstitution 屬性設定 true 為 ，則可以解析內嵌資源中其他 Web 資源的參考。

適用於