PageHandlerFactory.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / PageHandlerFactory.cs / 2 / PageHandlerFactory.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * Handler Factory implementation for Page files 
 *
 * Copyright (c) 1999 Microsoft Corporation 
 */

namespace System.Web.UI {
using System.Runtime.Serialization.Formatters; 

using System.IO; 
using System.Security.Permissions; 
using System.Web.Compilation;
using System.Web.Util; 
using Debug=System.Web.Util.Debug;

/*
 * Handler Factory implementation for ASP.NET files 
 */
[PermissionSet(SecurityAction.LinkDemand, Unrestricted = true)] 
[PermissionSet(SecurityAction.InheritanceDemand, Unrestricted=true)] 
public class PageHandlerFactory : IHttpHandlerFactory2 {
 
    private bool _isInheritedInstance;

    protected internal PageHandlerFactory() {
        // Check whether this is the exact PageHandlerFactory, or a derived class 
        _isInheritedInstance = (GetType() != typeof(PageHandlerFactory));
    } 
 
    public virtual IHttpHandler GetHandler(HttpContext context, string requestType, string virtualPath, string path) {
        Debug.Trace("PageHandlerFactory", "PageHandlerFactory: " + virtualPath); 

        // This should never get called in ISAPI mode but currently is in integrated mode
        // Debug.Assert(false);
 
        return GetHandlerHelper(context, requestType, VirtualPath.CreateNonRelative(virtualPath), path);
    } 
 
    IHttpHandler IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType,
        VirtualPath virtualPath, String physicalPath) { 

        // If it's a derived class, we must call the old (less efficient) GetHandler, in
        // case it was overriden
        if (_isInheritedInstance) { 
            return GetHandler(context, requestType, virtualPath.VirtualPathString, physicalPath);
        } 
 
        return GetHandlerHelper(context, requestType, virtualPath, physicalPath);
    } 

    public virtual void ReleaseHandler(IHttpHandler handler) { }

    private IHttpHandler GetHandlerHelper(HttpContext context, string requestType, 
        VirtualPath virtualPath, string physicalPath) {
 
        Page page = BuildManager.CreateInstanceFromVirtualPath( 
            virtualPath, typeof(Page), context, true /*allowCrossApp*/, true /*noAssert*/) as Page;
        if (page == null) 
            return null;

        page.TemplateControlVirtualPath = virtualPath;
 
        return page;
    } 
 
}
}

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