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C++ and STL: Take Advantage of STL Algorithms by Implementing a Custom Iterator

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

There are many benefits to using the Standard Template Library (STL) for C++ development, including the ability to use generic data structures and algorithms. To use the STL algorithms, an STL-conforming container is required. Iterating through the Internet Explorer cache is an informative exercise, but the cache is not an STL-conforming container. So, to use the STL algorithms to search and enumerate the Internet Explorer cache, an adapter is needed. Building such an adapter-an STL-conforming iterator-is the topic of this article. Also provided is an overview of the components of the STL and the Win32 Internet APIs used.

Samir Bajaj

MSDN Magazine April 2001

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More Related Resource Links

XML Schemas: Take Advantage of Existing External XML Schemas with a Custom Import Framework in ASP.N


Over the years, many industry-standard XML schemas and dialects have been developed. These industry-specific schemas embrace the original purpose of XML and are extremely valuable in promoting and supporting B2B interaction. Unfortunately, the ASP.NET Web Services runtime does not allow developers to directly reference external schemas from within their XML Web Services interface (the WSDL file). This article builds an external schema framework as an extension to the ASP.NET Web Services runtime to enable you to reference external schemas within your XML Web Service interface.

Scott Short

MSDN Magazine December 2002

Implementing a custom Membership Provider vs. using aspnet_Profile table - Which should I do?


I wanted to expand the amount of information that is associated with each user(MembershipUser) in the ASPNETDB.MDF database file. Adding columns like FirstName, LastName, etc. So I began implementing my own custom Membership Provider. I created a derived MembershipUser class with the extra private variables that I wanted each MembershipUser record to store. Its basically done. Almost after I did this I stumbled across the columns in the ASPNETDB.MDF->aspnet_Profile table called "PropertyNames" and "PropertyValuesString".  Could I have simply used these two columns to accomplish what I was attempting to do or are these columns for global application configuration settings?  

Is the aspnet_Profile table purpose to store expanded/related information about users such as personal information? Or is it for something else? Thanks.

Implementing custom ValidationFor to show an error icon with a tooltip instead of just text for c


I got the problem that my implementation (see source below) only shows the validation error message after server side validation an NOT

after clientside validation! My questions is, how can you extend or implement to show the validation error message also on client-side validation.

Unfortunately I have not found any other info source about this subject, so any help will be very much appreciated!

 public static string ErrorMessageFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression)
            string modelName = htmlHelper.ViewContext.ViewData.TemplateInfo.GetFullHtmlFieldName(ExpressionHelper.GetExpressionText(expression));
            FormContext formContext = htmlHelper.ViewContext.FormContext;

            if (!htmlHelper.ViewData.ModelState.ContainsKey(modelName) && formContext == null)
                return null;

            ModelState modelState = htmlHelper.ViewData.ModelState[modelName];
            ModelErrorCollection modelErrors = (modelState == null) ? null : modelState.Errors;
            ModelError modelError = ((modelErrors == null) || (modelErrors.Count == 0)) ? null : modelErrors[0];

            if (modelError == null && formContext == null)

Implementing custom InstanceStore



There are a bunch of InstancePersistenceCommand derived commands that could be "executed" against the store. I can't find documentation that answers questions like:

- Which commands *must* be handled by a custom instance store?

- What is the "contract", expected behavior for each command?

- How are errors to be handled and reported to callers?

I've looked at the XmlWorkflowInstanceStore but it does not give the whole picture.

Thank you.

tjk :)

Implementing custom formulas..



I have such need.


A simple database:










So far all is fine.


But users setup reports, by defining the line calculation formula, for example: ((CenterA + CenterB) * 0,5 + 100) * CenterC


Now they want to implement this in Analysis Services.

How should I proceed about that..?



LINQ : Implementing IN and NOT IN

I got tried of typing

var result = from s in source
where items.Contains(s)
select s;and so I implemented the IN and NOT IN methods as extension methods:

Custom Controls in C# .NET

Embedding user controls in a Windows form is just like adding a simple button or text box that are already provided with .NET. These basic controls were written essentially like you code your own controls. Typically the controls you design are to be used in multiple forms or to modularize your code. These reasons help reduce the amount of code you have to type as well as make it easier for you to change your implementation. There should almost never be any reason to duplicate code because it leaves a lot of room for bugs. So, implementing functionality specific to your control in the control's source code is a good idea. This reduces code duplication as well as modularize your code, which is a good programming guideline.

Implementing Continuous Scrolling UI Pattern in ASP.NET

When you have numerous records to show, we have to resort to Paging. There is a better alternative to display voluminous data (especially read only data) while providing a better user experience & also making efficient use of server bandwidth - the Continuous Scrolling or Infinite Scrolling UI Pattern. Read on to know more about how to implement Continuous Scrolling UI Pattern in ASP.NET with a GridView.

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.

Custom Editing Behavior for DataGridView TextBox Columns

For various reasons I'm using a DataGridView instead of a ListView, and while configuring the DataGridView to look like a ListView wasn't much of a problem, there's one thing that got on my nerves, which is the behavior of textbox cells in edit mode: It is much too easy to leave the edit mode accidentally, simply by pressing the cursor keys at the wrong time. For example when the text caret is positioned behind the last character of the textbox cell content, and you press the right arrow key

Write Custom WebParts for SharePoint 2007

The popularity of SharePoint Portal Server 2003 led Microsoft to tightly integrate the next SharePoint version, Microsoft Office SharePoint Server (MOSS) 2007, with its ASP.NET 2.0 WebPart framework. This tight integration enables the ASP.NET and SharePoint developer to do a number of things that previously weren't possible

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).

Custom views on .aspx webpage


Hi again, i have a client that needs me to create a custom view on thier webpage similar to Microsoft Word.

It goes about that, when I click on an image it redirects me to another page and must create a custom view for a certain paragraph on that page. I am not sure how to do this and wonder if anyone knows how.

I am using C# programming language if that helps at all. I Heard that using javascript would work but i dont know javascript yet so is there any alternative?

Set Custom Paper size in C#.net 3.5


Dear All,

I have to set custom paper size 6X8 inches

plz tell sugest me code how to do it.

in C#.net 3.5

i m using Asp.net 3.5 Crystal report

i have to do it programiticlly



How to implement custom HttpContext for each request under class that implements IHTTPHandler


Hello All,

I created an application and implemented IHTTPHandler for all incoming request ending with ".aspx" extension.

Under "ProcessRequest" module, I am creating an instance of HttpContext (with URL attributes different from my application's URL i.e. if I am working on localhost then speciying Yahoo.com as its URL) and assigning it to "context" which comes as method argument.

After redirection, an error is generated. Also, the custom HTTPContext is not passed to the requested page (default.aspx, in my case.)

Code is as follows.

    Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest
            Dim requestedUrl As String
            Dim targetUrl As String
            Dim urlLength As Integer
            'Save settings which will be used while redirecting to appropriate page
            requestedUrl = context.Request.RawUrl
            If requestedUrl.IndexOf("?") >= 0 Then
                targetUrl = requestedUrl.Substring(0, requestedUrl.IndexOf("?"))
                targetUrl = requestedUrl
            End If
            If targetUrl = Nothing Or targetUrl.Length = 0 Then
                targetUrl = requestedUrl
            End If

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



Custom Control Design-Time SiteMap Provider Error


Greetings - I was referred here by MSDN forums hope this is the right place -  

I have a custom control (:WebControl) that renders web.sitemap in a specific way. While it runs error free and produces the expected result, at Design-Time it complains

Error Creating Control - MyControl  The provider 'AspNetXmlSiteMapProvider' specified for the defaultProvider does not exist in the providers collection.

I have discovered that the error is cause by this line of code:

string div = string.Format("<div class='{0}' id='{1}'>{2}</div>", this.CssClass, this.ID.ToString(), EnumerateNodesRecursive(SiteMap.RootNode, level));

or more specifically, by the reference to SiteMap.RootNode - I am not clear what is missing thoough because I have configured the SiteMapProvider in web.config as this:

        <add name="AspNetXmlSiteMapProvider" 
             type="System.Web.XmlSiteMapProvider, System.Web, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" 
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