HttpModuleCollection 类
定义
重要
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提供一种方法，用以索引并检索 IHttpModule 对象的集合。
public ref class HttpModuleCollection sealed : System::Collections::Specialized::NameObjectCollectionBasepublic sealed class HttpModuleCollection : System.Collections.Specialized.NameObjectCollectionBasetype HttpModuleCollection = class
inherit NameObjectCollectionBasePublic NotInheritable Class HttpModuleCollection
Inherits NameObjectCollectionBase- 继承
示例
下面的代码示例演示 AllKeys 类的属性和 GetKey 方法和 CopyTo 方法 HttpModuleCollection 。 该示例从当前对象获取当前 HttpContext 请求的应用程序对象。 然后，它将从应用程序实例中提取 HttpModuleCollection 对象，并显示对象的名称 IHttpModule 。
<%@ Page language="C#" %>
<%@ Import Namespace = "System.Data" %>
<script runat="server">
// System.Web.HttpModuleCollection.AllKeys;GetKey;CopyTo
void Page_Load(object sender, System.EventArgs e)
{
// Get the HttpContext object for the current request.
HttpContext myHttpContext = HttpContext.Current;
// Get the application object for the current request.
HttpApplication myHttpApplication = myHttpContext.ApplicationInstance;
// Get the collection of all HTTPModule objects for the current application.
HttpModuleCollection myHttpModuleCollection = myHttpApplication.Modules;
// Get the name of the HttpModule object at index 1.
string httpModuleName = myHttpModuleCollection.GetKey(1);
Response.Write("The name of the HttpModule object at index 1" + " is " +"'"+ httpModuleName+"'." + "<br><br>");
string[] allModules = myHttpModuleCollection.AllKeys;
// Display the names of all HttpModule objects.
Response.Write("<b>The HttpModule objects contained in the HttpModuleCollection are:</b><br>");
for(int i=0; i < allModules.Length; i++)
Response.Write("Module" + i + " : " + allModules[i] + "<br>");
// Copy the HttpModule objects in the collection into an array.
System.Array httpModuleArray = Array.CreateInstance(typeof(object),myHttpModuleCollection.AllKeys.Length);
myHttpModuleCollection.CopyTo(httpModuleArray,0);
Response.Write("<br><br><b>Successfully copied the HttpModule objects in the HttpModuleCollection to an array."+
"<br>Displaying the HttpModule objects in array:</b><br>");
for(int i=0; i < httpModuleArray.Length; i++)
Response.Write("Module" + i + ": " + httpModuleArray.GetValue(i) + "<br>");
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>HttpModuleCollection Example</title>
</head>
<body>
</body>
</html>
<%@ Page language="VB" %>
<%@ Import Namespace = "System.Data" %>
<script runat="server">
' System.Web.HttpModuleCollection.AllKeys;GetKey;CopyTo
Sub Page_Load(Sender As Object, e As EventArgs )
' Get the HttpContext object for the current request.
Dim i As Integer
Dim myHttpContext As HttpContext = HttpContext.Current
' Get the application object for the current request.
Dim myHttpApplication As HttpApplication = myHttpContext.ApplicationInstance
' Get the collection of all HTTPModule objects for the current application.
Dim myHttpModuleCollection As HttpModuleCollection = myHttpApplication.Modules
' Get the name of the HttpModule object at index 1.
Dim httpModuleName As string = myHttpModuleCollection.GetKey(1)
Response.Write("The name of the HttpModule object at index 1" + " is " +"'"+ httpModuleName+"'." + "<br><br>")
Dim allModules() As string = myHttpModuleCollection.AllKeys
' Display the names of all HttpModule objects.
Response.Write("<b>The HttpModule objects of HttpModuleCollection are:</b><br>")
For i = 0 To allModules.Length -1
Response.Write("Module" + i.ToString() + " : " + allModules(i).ToString() + "<br>")
Next i
' Copy the HttpModule objects in the collection into an array.
Dim httpModuleArray As System.Array = Array.CreateInstance(GetType(object),myHttpModuleCollection.AllKeys.Length)
myHttpModuleCollection.CopyTo(httpModuleArray,0)
Response.Write("<br><br><b>Successfully copied the HttpModule objects in the HttpModuleCollection to an array."+ "<br>Displaying the HttpModule objects in the array:</b><br>")
For i=0 To httpModuleArray.Length -1
Response.Write("Module" + i.ToString() + ": " + httpModuleArray.GetValue(i).ToString() + "<br>")
Next i
End Sub
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>HttpModuleCollection Example</title>
</head>
<body>
</body>
</html>
属性
| AllKeys |
获取一个包含 HttpModuleCollection 中所有键（模块名称）的字符串数组。 |
| Count |
获取包含在 NameObjectCollectionBase 实例中的键/值对的数目。 (继承自 NameObjectCollectionBase) |
| IsReadOnly |
获取或设置一个值，通过该值指示 NameObjectCollectionBase 实例是否为只读的。 (继承自 NameObjectCollectionBase) |
| Item[Int32] |
从 HttpModuleCollection 中获取具有指定数字索引的 IHttpModule 对象。 |
| Item[String] |
从 HttpModuleCollection 获取具有指定名称的 IHttpModule 对象。 |
| Keys |
获取包含 NameObjectCollectionBase.KeysCollection 实例中所有键的 NameObjectCollectionBase 实例。 (继承自 NameObjectCollectionBase) |
方法
显式接口实现
| ICollection.CopyTo(Array, Int32) |
从目标数组的指定索引处开始将整个 NameObjectCollectionBase 复制到兼容的一维 Array。 (继承自 NameObjectCollectionBase) |
| ICollection.IsSynchronized |
获取一个值，该值指示对 NameObjectCollectionBase 对象的访问是否同步（线程安全）。 (继承自 NameObjectCollectionBase) |
| ICollection.SyncRoot |
获取一个对象，该对象可用于同步对 NameObjectCollectionBase 对象的访问。 (继承自 NameObjectCollectionBase) |
扩展方法
| Cast<TResult>(IEnumerable) |
将 IEnumerable 的元素强制转换为指定的类型。 |
| OfType<TResult>(IEnumerable) |
根据指定类型筛选 IEnumerable 的元素。 |
| AsParallel(IEnumerable) |
启用查询的并行化。 |
| AsQueryable(IEnumerable) |
将 IEnumerable 转换为 IQueryable。 |