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The ASP Column: ASP.NET Connection Model and Writing Custom HTTP Handler/Response Objects

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

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DataGrid: Tailor Your DataGrid Apps Using Table Style and Custom Column Style Objects


One of the most enduring challenges in writing user interfaces is figuring out how to display large amounts of data efficiently and intuitively without bewildering the user. The problem becomes particularly thorny when the interface must reflect hierarchical relationships within the data that the user needs to modify. The Windows Forms DataGrid control gives developers a powerful and flexible tool to meet this challenge. This article explains its basic operations and shows how to extend the DataGrid to display columns of data in an application-appropriate manner.

Kristy Saunders

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Custom Event Handler causes "Potentially excessive number of SPRequest objects".

I am getting the following in our custom event handler on our WSS 3.0 installation.  Potentially excessive number of SPRequest objects (9) currently unreleased on thread 10.  Ensure that this object or its parent (such as an SPWeb or SPSite) is being properly disposed. This object is holding on to a separate native heap. I know this is normally a performance issue due to incorrect coding technique, but I cannot figure out where my leak might be? Here is the code.         private const string _workflowName = "ROUTINGROUTER";         private const string _workflowName2 = "ROUTINGWORKFLOW";         private const string _currStateField = "CurrentState";         private const string _fieldName = "InProcess";         private const string _actionFieldName = "SourceAction";         private const string _triggerFieldValue = "FALSE";         private const string _actionTrigger = "RUN";         private const string _routingListName = "LIPList";         public override void ItemUpdated(SPIte

Files won't download from ASP.NET site when the site has a custom HTTP Handler mapped to the file e


When I have a HttpHandler class in C#/ASP.NET mapped to a file extension in IIS any file with that extension fails to download/display in web browsers (it's downloaded as a 0-byte file in some browsers and nothing at all in other browsers).  After removing the application mapping for the HttpHandler in IIS so it doesn't call the IHttpHandler class in C#, the web browser downloads the file successfully.

This was tested with an IHttpHandler class in C# that has an empty ProcessRequest method. Any ideas on what the problem could be?

Response Content Type can not be set within Http Handler


as the subject, i have a handler that process all kind of request to the server (path="*"),

whenever i try to set the content type, it will be overridden by a default value "text/html",

i am using IIS7 + Framework 4  in integrated mode, any idea?

Writing custom MembershipProvider

ASP.NET Membership mechanism allows to use the build-in server tables to store and retrieve user data. By default, this mechanism can only be used with SQL Server database to which Microsoft provides suitable MembershipProvider class.
Inheriting from this abstract class, developer can use his own table(-es) from any database and use any database engine other than SQL Server, like Oracle, DB2 etc.

Writing Custom Web Parts for SharePoint 2007

As I mentioned in an earlier blog post, SharePoint 2007 is built on top of ASP.NET 2.0, which means you can now use ASP.NET 2.0 features (Forms Authentication, Master Pages, Membership, Site Navigation, New Data Controls, etc) when building SharePoint sites. This is true for both the new Windows SharePoint Services 3.0 version (which will be a free download) as well as Microsoft Office SharePoint Server 2007 (which costs money).

Writing Http Handlers and Modules in IIS 7.5

This article describes how Http modules and handlers are to be written and configured in IIS 7.5. The concept of a handler and module remains same, so dose there programming model. In this section we start off with the concept of a Http module and a Http handler, then talk about how to code them and finally describe the two methods available to configure them.

How to read the custom http header



I have just joined the forum. I have a very simple query. I have added custom header to my website. Now I want to read the custom header. I am using IIS 6.0 on windows XP. I have already tried using using the Request.ServerVariables and and Request.header method. But none of them give me the custom header added to website.

Can any body help?

Thanks a lot in advance



A connection could not be made to the report server http://localhost/ReportServer.



  • I created a Report using Business Intelligence Studio. Its working working well, i can able to view records. But when i try to deploy the report an error occurs specifying that "A connection could not be made to the report server http://localhost/ReportServer. (Microsoft Report Designer)".
  • I open the IIS 7 and find out virtual directories "Reports" and "ReportServer" are available.
  • I check on the browser and type "http://localhost/reports".  I find the browser direct to this url: http://localhost/reports/Pages/Folder.aspx and find error specifying the following one:

         Error:The report server is not responding. Verify that the report server is running and can be accessed from this computer.

  • when i type http://localhost/reportmanager, i found the error:

    HTTP Error 404.0 - Not Found

    The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.


Test Run: Web Application HTTP Request-Response Test Automation with JavaScript


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Data Points: Data Bound Applications with ADO.NET and Custom Objects


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Office XP: Build a Custom DLL to Expose Your Objects and Services Through Smart Tag Technology


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Paul Sanna

MSDN Magazine January 2002

Windows Forms: A Modern-Day Programming Model for Writing GUI Applications


To write GUI applications for Microsoft .NET you'll use Windows Forms. Windows Forms are a new style of application built around classes in the .NET Framework class library's System.WinForms namespace. They have a programming model all their own that is cleaner, more robust, and more consistent than models based on the Win32 API or MFC, and they run in the managed environment of the .NET Common Language Runtime (CLR). This article details what Windows Forms are all about, from the programming model to Microsoft Intermediate Language and the JIT compiler. Two applications using forms, event handlers, anchors and persistence are built step by step.

Jeff Prosise

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Search Server Gatherer - Custom hierarchical protocol handler ISearchProtocol for MOSS 2010



Search server gatherer calls CloseAccessor() and shutdown() on ISearchProtocol after GetChunk() even if the FILTER_E_END_OF_CHUNKS is not returned. After calling shutdown() it stops calling the createaccessor() with new URL. I want to create a hierarchical indexing but I am not gatherer is not suporting this. The same piece of code is working fine in MOSS 2007, I am facing this issue in MOSS 2010 only. Is there anything changed in MOSS 2010 which is creating this issue?



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