Managed Extensibility Framework

Managed Extensibility Framework:

Three core concepts with MEF:

1)      Export(s) : It exposes Contracts and contract like .NET Interface or Class or property

Code:

[Export(typeof(ICache))]

Public class Caching: ICache

{

               Public object Get(string cache_key)

{

               //Caching implementation

}

}

2)      Imports: Used to consume exported instances.

Code:

[Import()]

Private ICache cache;

3)      Catalog: hosts components that need to be composed.

Code:

Public static void Compose(object o)

{

               var container = new CompositionContainer(

                                             new DirectoryCatalog(Path.Combine(

AppDomain.CurrentDomain.BaseDirectory,

@”bin\MEFBin”)));

                              Var batch = new CompostionBatch();

batch.AddPart(o);

               container.Compose(batch);

}

Application Design - Layered Architecture

 Layered Architecture:

           1)      Presentation Layer - User Interface of application

           2)      Business Logic Layer – Rules of application

           3)      Data Access Layer – Responsible for connecting to data source and interacting with data that is stored in that location.

e.g. database, some XML files, text files or web service.  

4)   Utility /Components Layer – Mechanism of caching, logging errors, reading from configuration files.

Create independent project called Component layer   

           a)      Presentation layer – Web

           b)      Business layer – entities, business logic, components, interfaces

           c)      Data Layer – Entities, Data Access

           d)      Components Layer – Caching, logging, Configuration

How to Uninstall Internet Explorer 11 for Windows 7

http://www.wikihow.com/Uninstall-Internet-Explorer-11-for-Windows-7

Bug and Fix: ASP.NET fails to detect IE10 causing _doPostBack is undefined JavaScript error or maintain FF5 scrollbar position

http://www.hanselman.com/blog/BugAndFixASPNETFailsToDetectIE10CausingDoPostBackIsUndefinedJavaScriptErrorOrMaintainFF5ScrollbarPosition.aspx

Installing Oracle 11g database to your PC follow link

http://holowczak.com/installing-oracle-11g-release-2-windows-7-32-bit/

Textbox limit to 7 characters in mvc

<%=Html.TextBoxFor(m => m.BaseMatThicknessMin,new  { @class = "numeric iinc SearchR small cImperial RevisionControl", tabIndex = "6",@maxlength="7" })%>

Jquery limit text in input box

$('#txtpassword').on('keyup', function() {
    limitText(this, 10)
});

function limitText(field, maxChar){
    var ref = $(field),
        val = ref.val();
    if ( val.length >= maxChar ){
        ref.val(function() {
            console.log(val.substr(0, maxChar))
            return val.substr(0, maxChar);       
        });
    }
}