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C++ Q&A: Docking the Menu Bar, Abstract Classes vs. Interfaces, and More

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

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InterFaces and Abstract Classes

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Abstract Classes vs. Interfaces

The choice of whether to design your functionality as an interface or an abstract class can sometimes be a difficult one. In This article you learn how Abstract Class is differ than Interfaces and How to decide whether to use an interface or an abstract class

MSDN Abstract Classes Link

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Abstract Factory Design in C# , Vb.NET

Provide an interface for creating families of related or dependent objects without specifying their concrete classes

ASP.NET Menu with jQuery Superfish

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An abstract factory provides an interface for creating families of related objects without specifying their concrete classes. Sometimes one wants to construct an instance of one of a suite of classes, deciding between the classes at the time of instantiation. In order to avoid duplicating the decision making everywhere an instance is created, we need a mechanism for creating instances of related classes without necessarily knowing which will be instantiated.

Abstract Factory Pattern-Creational Patterns

The Factory pattern allowed us to decouple our client from an object which it uses. The Abstract Factory pattern extends this idea to manage separate families of objects.

A runtime selection, or configuration option, in our client could decide which family of objects is to be used. The Abstract Factory pattern allows us to write generic code to instantiate and use the family objects regardless of which family is chosen at runtime. The pattern also helps us enforce a rule where objects from just the chosen family are used uniformly by the client.

abstract away the source of the connection string using a class with a static property.

ASP.NET provides a configuration system we can use to keep our applications flexible at runtime. In this article we will examine some tips and best practices for using the configuration system for the best results.

The element of a web.config file is a place to store connection strings, server names, file paths, and other miscellaneous settings needed by an application to perform work. The items inside appSettings are items that need to be configurable depending upon the environment, for instance, any database connection strings will change as you move your application from a testing and staging server into production.

Let's abstract away the source of the connection string using a class with a static property.

Problem making Role based Menu in MVC application



 I want to make Rolebase menu in MVC such that if user doesnot have permission for some action then that Action name shouldnot be shown in the Menu.

 I have used the code in the url(http://forums.asp.net/t/1566328.aspx) in my MVC application.My application is a Discussion Forum(in MVC) same functionality as in this forum forums.asp.net

 I have used Controllers for post, thread etc.In each controller there are some actions that are using [Authorize(Roles)] attribute

 but this coding does not count  those Actions in Controllers having Authorize attribute according to the url http://forums.asp.net/t/1566328.aspx 

 In the code, Authorize attribute is applied to Controller class, but my requirement is of Applying Authorize attribute to some actions in controller so that some are available for all users and  some links are available rolewise.Now what is the solution for that?



DropDownExtender - menu disapears


Hello all, first ever post here :)

Hope you guys can help me out, this drives me crazy...

So I got 2 updatepanels on my page. In one there is a Timer which updates for example a label. In the other one there is a dropdownextender. Everytime the timer ticks while the dropdown menu is displayed the menu disapears. I attached the sample code below....any insights on this? And yes, the dropdown and the label need to be in two seperate updatepanels....

Many thanks



<form id="form1" runat="server">

<asp:ToolkitScriptManager ID="ScriptManager1" runat="server" />

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick" Interval="4000" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

<asp:UpdatePanel ID="UpdatePanel2" runat="server">


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Any suggestions will be very much appreciated.


Singleton Pattern and Abstract Class


I know what Singleton Pattern means and Abstract class means.

What I wanted to know was how would this apply to real world.

Could anyone give me any good example or simple explanation.

Say I have a simple website, why would I use any of the above if any.

Why would it simplify my architechture.

Thanks in advace. 

May i use the collapse and expand feature (like tree menu) in Report ?


HI all,

May i use the collapse and expand feature (like tree menu) at Report iam using the Report viewer  Control for displaying the Report on my Asp.net Page .


I have number records and each record have detail as i clicked or expand the record then details will be shown is it possible with report viewer control 
If any one have experince before please share the ideas.


Best Regards

Relation between classes in c# with class diagrams



Can anyone provide me an example of one to one and one two many relationship between classes in c# with class diagram and explationation.

Changing classic asp.net Menu to CssAdapterMenu


Hello Friends,

                     I have been using asp.net menu control that is programmatically binded at runtime and has n child node levels. Now i want to use CssAdapterMenu instead because the menu control contains more than 1000 menuItems(in the near future it can also be more 2000 menuItems) and has very slow response in IE 6 or IE 7.

                    Now my question is how should i change the classic asp.net menu to CssAdapterMenu. What should be the steps? Any samples example of n child node levels would be helpful


Asp.net menu cssadapter


Hi All,

I am using asp.net menu using cssadapter. How Can I change this the menu show menu using mouse click




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