Solved

MVVM Pattern in asp.net web application

Posted on 2010-09-15
12
1,088 Views
Last Modified: 2013-11-07
Hi

I have a web application in which I want to implement MVVM pattern. I want to know if there any sample code that will clearly mention what all steps I need to execute to implement it.


Apart from that I want to know if there is any dll that need to be refered.

Kindly advice

Regards
Karan Gupta
0
Comment
Question by:KaranGupta
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
  • 2
12 Comments
 
LVL 29

Accepted Solution

by:
Gautham Janardhan earned 200 total points
ID: 33681349
0
 
LVL 53

Expert Comment

by:Dhaest
ID: 33681399
0
 

Author Comment

by:KaranGupta
ID: 33688365
Hi

I am trying to implement the code(please check the code section).  I am getting the compile time error

1. INotifyPropertyChanged is not defined.
2. Application is not declared
3. Type PropertyChangedEventHandler is not defined.

Is there any namespace that I am missing,

Regards
Karan Gupta
Imports Microsoft.VisualBasic

Public Class ViewModelBase
    Inherits INotifyPropertyChanged

    Protected Sub OnNotifyPropertyChanged(ByVal p As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(p))
    End Sub

    Public ReadOnly Property IsDesignTime() As Boolean
        Get
            Return (Application.Current Is Nothing) OrElse (Application.Current.[GetType]() = GetType(Application))
        End Get
    End Property

#Region "INotifyPropertyChanged Members"
    Public Event PropertyChanged As PropertyChangedEventHandler
#End Region


End Class

Open in new window

0
Salesforce Made Easy to Use

On-screen guidance at the moment of need enables you & your employees to focus on the core, you can now boost your adoption rates swiftly and simply with one easy tool.

 
LVL 53

Assisted Solution

by:Dhaest
Dhaest earned 300 total points
ID: 33688856
0
 

Author Comment

by:KaranGupta
ID: 33698708
Hi

I have included System.ComponentModel namespace but still I am getting the same error. Please check the code attached.


Regards
Karan Gupta

Imports Microsoft.VisualBasic
Imports System.ComponentModel


Public Class ViewModelBase
    Inherits INotifyPropertyChanged

    Protected Sub OnNotifyPropertyChanged(ByVal p As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(p))
    End Sub

    Public ReadOnly Property IsDesignTime() As Boolean
        Get
            Return (Application.Current Is Nothing) OrElse (Application.Current.[GetType]() = GetType(Application))
        End Get
    End Property

#Region "INotifyPropertyChanged Members"
    Public Event PropertyChanged As PropertyChangedEventHandler
#End Region


End Class

Open in new window

0
 
LVL 53

Assisted Solution

by:Dhaest
Dhaest earned 300 total points
ID: 33698760
0
 

Author Comment

by:KaranGupta
ID: 33698875
Hi

As the tutorial given in

http://weblogs.asp.net/dwahlin/archive/2009/12/08/getting-started-with-the-mvvm-pattern-in-silverlight-applications.aspx

there has to be View, Model and View Model that is what MVVM pattern is all about. If I am making a contact us page then I have a textbox. In the view i.e. .aspx page I will put all the UI part. In the view model it should be properties . When it comes to Business logic out all the logic in the Model.

I have some queries

1. Is what I have written is correct?
2. View model should be inherited from ViewModelBase class. Am I right(Please check code section)?
3. Is the model class should be inherited from some class?

Kindly advice

Regards
Karan Gupta
Imports System.ComponentModel

Public Class ViewModelBase
    Implements INotifyPropertyChanged

    Public Event PropertyChanged As PropertyChangedEventHandler _
        Implements INotifyPropertyChanged.PropertyChanged

    Private Sub NotifyPropertyChanged(ByVal info As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
    End Sub
End Class

Open in new window

0
 

Author Comment

by:KaranGupta
ID: 33698977
Hi

Can we application MVVM pattern in simple asp.net application without using silverlight?


Regards
Karan Gupta
0
 

Author Comment

by:KaranGupta
ID: 33713646
Hi

Any updates?

Regards
Karan Gupta
0
 
LVL 53

Assisted Solution

by:Dhaest
Dhaest earned 300 total points
ID: 33714071
0
 
LVL 29

Assisted Solution

by:Gautham Janardhan
Gautham Janardhan earned 200 total points
ID: 33714105
MVVM was designed keeping Silver light /  WPF in mind so i don't think you will be able to utilize it in Asp.net. You may either look into MVP as Dhaest suggested  or better go for MVC
0
 

Author Closing Comment

by:KaranGupta
ID: 33751106
Query resolved
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
orderby list (from Json) 1 42
How to set focus on a dynamic control 18 47
RestClient.cs fails at (HttpWebResponse)request.GetResponse()) 4 47
SSIS Column mapping 5 39
Flash (http://en.wikipedia.org/wiki/Adobe_Flash) has evolved over the years to where it has become a masterful tool for displaying content screen.  It has excellent layout placement, UI precision as well as rendering capabilities. This, along with t…
This article describes relatively difficult and non-obvious issues that are likely to arise when creating COM class in Visual Studio and deploying it by professional MSI-authoring tools. It is assumed that the reader is already familiar with the cla…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…
How to Install VMware Tools in Red Hat Enterprise Linux 6.4 (RHEL 6.4) Step-by-Step Tutorial

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question