Page.Context 属性

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

获取与该页关联的 HttpContext 对象。

protected:
 virtual property System::Web::HttpContext ^ Context { System::Web::HttpContext ^ get(); };

protected public:
 virtual property System::Web::HttpContext ^ Context { System::Web::HttpContext ^ get(); };

protected override System.Web.HttpContext Context { get; }

protected internal override System.Web.HttpContext Context { get; }

member this.Context : System.Web.HttpContext

Protected Overrides ReadOnly Property Context As HttpContext

Protected Friend Overrides ReadOnly Property Context As HttpContext

属性值

HttpContext

HttpContext 对象，它包含与当前页关联的信息。

示例

下面的代码示例使用 Context 属性访问 HttpContext.AddError 和 HttpContext.ClearError 方法和 HttpContext.AllErrors 属性。 该示例使用 AddError 该方法创建三个自定义异常， AllErrors 并使用该属性将这些异常加载到数组。 然后，它将数组写入包含页，并使用 ClearError 该方法清除属性中的所有错误 Context 。

     void Page_Load(Object sender,EventArgs e) 
     {
        Response.Write("<h3>Page.Context Example:</h3>");

        // Add three custom exceptions.
        Context.AddError(new Exception(
            "<h3 style='color: red'>New Exception #1.</h3>"));
        Context.AddError(new Exception(
            "<h3 style='color: red'>New Exception #2.</h3>"));
        Context.AddError(new Exception(
            "<h3 style='color: red'>New Exception #3.</h3>"));

        // Capture all the new Exceptions in an array.
        Exception[] errs = Context.AllErrors;

        foreach (Exception ex in errs)
        {
           Response.Write("<p style='text-align:center; ");
           Response.Write("font-weight:bold'>");
           Response.Write(Server.HtmlEncode(ex.ToString()) + "</p>"); 
        }

        // Clear the exceptions so ASP.NET won't handle them.
        Context.ClearError();
     }

     Sub Page_Load(Sender As Object, e As EventArgs ) 
     
        Response.Write("<h3>Page.Context Example:</h3>")
           
        ' Add three custom exceptions.
       Context.AddError(New Exception( _
           "<h3 style=""color: red"">New Exception #1.</h3>"))
       Context.AddError(New Exception( _
           "<h3 style=""color: red"">New Exception #2.</h3>"))
       Context.AddError(New Exception( _
           "<h3 style=""color: red"">New Exception #3.</h3>"))

        ' Capture all the new Exceptions in an array.
        Dim errs() As Exception = Context.AllErrors
        Dim ex As Exception
        
        For Each ex In errs
           Response.Write("<p style='text-align:center; font-weight:bold'>")
           Response.Write(Server.HtmlEncode(ex.ToString()) + "</p>")
        Next

        ' Clear the exceptions so ASP.NET won't handle them.
        Context.ClearError()
     End Sub

注解

此属性提供对页面所运行上下文的编程访问，包括有关请求、响应、会话和应用程序的信息。

另请参阅

• HttpContext