I think then i exist

MVVM ViewModel Service Locator Sample

2012-02-16T13:29:00.001+02:00

One of common problems in MVVM is to have Service Locator .Here I created simple implementation on service locator pattern. First we will create interface IServiceLocator :

    public interface IServiceLocator
    {
        T GetInstance<T>() where T : IViewModel, new();
    }

And also we have a Service locator class :

    public class ServiceLocator : IServiceLocator
    {
        private IDictionary<object, object> instances;
        private static IServiceLocator locator = new ServiceLocator();

        private ServiceLocator()
        {
            instances = new Dictionary<object, object>();
        }

        public static IServiceLocator Current { get { return locator; } }

        public T GetInstance<T>() where T : IViewModel,new()
        {
            try
            {
                return (T)instances[typeof(T)];
            }
            catch (KeyNotFoundException)
            {
                this.instances.Add(typeof(T), new T());

                return (T)instances[typeof(T)];
            }
        }

        public void RemoveInstance<T>() where T : IViewModel, new()
        {
            try
            {
                this.instances.Remove(typeof(T));
            }
            catch (KeyNotFoundException)
            {
                
            }
        }
    }

We have to use service locator to initialize the view model instance like this :

   public partial class MyView : UserControl
    {
        public MyView()
        {
            InitializeComponent();

            this.DataContext = ServiceLocator.Current.GetInstance<MyViewModel>();
        }
    }

I hope this code helps and waiting for any comments (it is my first Silverlight experience).

References :

Stefano Ricciardi Blog

Model Driven Development Beyond Code Generation

2011-08-10T12:50:00.000+02:00

Very interesting session you can find here

Hanselminutes Podcast 272 - Basics of Web Security with Barry Dorrans - Scott Hanselman

2011-07-26T12:51:00.000+02:00

This podcast touches a part of my character click here

The top 9+7 things every programmer or architect should know - Java Code Geeks

2011-07-26T12:35:00.000+02:00

I really like this article find it here

Developing Android applications using .Net

2011-07-06T10:23:00.003+02:00

For long time i believed that i can not develop android applications using .Net but recently i found tutorial link on twitter which surprised me .
click here to open the tutorial .

Does a Type Implement an Interface? - Scott Hanselman

2011-05-25T13:21:00.000+02:00

Does a Type Implement an Interface? - Scott Hanselman: "- Sent using Google Toolbar"

From Egypt With Love

2011-02-17T21:47:00.000+02:00

Subscripts and Superscripts in SSRS Reports - Some Random Thoughts

2011-01-16T14:05:00.000+02:00

Subscripts and Superscripts in SSRS Reports - Some Random Thoughts:

- Sent using Google Toolbar"

Regular Expression Cheat Sheet

2011-01-11T14:33:00.002+02:00

Regular Expression Cheat Sheet (.NET)

RegExLib.com Regular Expression Cheat Sheet (.NET Framework):

- Sent using Google Toolbar

Bin Deploying ASP.NET MVC

2010-12-27T13:23:00.003+02:00

How to deploy MVC application: Follow this blog post

Spell checker for Visual Studio

2010-11-22T09:34:00.001+02:00

Spell checker for HTML, ASP.NET, JScript, VB, C#, CSS and C++ for Visual Studio 2005 and 2008 Click here

Thirteen Tricks to Motivate Yourself

2010-11-08T21:40:00.001+02:00

Very Useful,
Thirteen Tricks to Motivate Yourself - Stepcase Lifehack

ASP.NET 4 - Breaking Changes and Stuff to be Aware of

2010-05-23T15:04:00.001+03:00

I hope that this links be useful

.Net Coding Best Practices

2010-01-26T15:57:00.022+02:00

Every one knows that follow the code best practices will prevent time wasting in code maintaining and will reduce the headache that the next developer will have during maintaining code and will improve performance of application.

I do some Google and collect some links for you:

.Net Coding Stranded : click here
ADO.Net Best Practices : Follow this article click here
.Net Performance Best practices : Follow this click here
ASP.Net Best Practices: Follow this click here , here , here
Exception Handling : follow this article click here
SQL Server : Follow this click here , here , here

I hope that this links help every one trying to code better.

Thanks my God, I am not interviewed by Google till now

2009-11-22T12:15:00.003+02:00

When i read this ,i shocked i checked the answers ,I surprised .

always before interviews i think that i can answer any question , inside interview and when being under pressure,i found myself so stupid

for example : in one interview , the interviewer asked me "can i access private member of class?" i said that "absolutely not" , after interview i found my self so stupid because i can do it by system.reflection :D

So never mind ....

Viewstate management in ASP.Net 4.0 - Nikolaos Kantzelis' Blog - Talks ASP.NET

2009-11-16T13:13:00.001+02:00

I read this article about viewstate management in ASP.net 4 and i want to share it with everyone

find it here:
Viewstate management in ASP.Net 4.0 - Nikolaos Kantzelis' Blog - Talks ASP.NET

Have a look at Google wave

2009-11-06T16:09:00.006+02:00

i am wondering why it is not opened for all users to test

A Function Gotcha with the Use of an Asterisk - SQLServerCentral

2009-09-18T01:41:00.001+02:00

A Function Gotcha with the Use of an Asterisk - SQLServerCentral

Nuno Silva » Blog Archive » Divs instead of tables

2009-09-14T07:28:00.000+02:00

good example of using Divs for layout
Nuno Silva » Blog Archive » Divs instead of tables

Choosing Between VMware Workstation & Microsoft Virtual PC

2009-08-29T19:27:00.002+02:00

Generally i am prefer Microsoft Virtual PC , Follow this useful link
Choosing Between VMware Workstation & Microsoft Virtual PC

Changing Table Schema – what goes behind the scenes – Part I - SQLServerCentral

2009-08-04T23:04:00.000+03:00

interesting topic from SQL Server Central newsletter:
Changing Table Schema – what goes behind the scenes – Part I - SQLServerCentral

HTML 5 Cheat Sheet (PDF) | Freebies | Smashing Magazine

2009-07-07T20:53:00.000+03:00

HTML 5 Cheat Sheet (PDF) | Freebies | Smashing Magazine: "HTML 5 Cheat Sheet (PDF)"

Differences between SET and SELECT in SQL Server

2009-06-23T20:21:00.001+03:00

Always when we find two ways to do the same thing .we begin to think why,which is best and which is more suitable for me .i found something interested about the difference between Set and Select when we assign value to SQL variable . follow this link:
Differences between SET and SELECT in SQL Server : Narayana Vyas Kondreddi's home page

New features in C# 4.0

2009-06-13T18:17:00.001+03:00

Good resource about New features in C# 4.0 here

nice scrum video

2009-06-11T22:11:00.006+03:00

I found this video during search about scrum and i really like it.

Scrum methodology from Soul' on Vimeo.