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MVP is a further bit of evolution on the MVC pattern. MVC is Model-View-Controller and is a way of separating out the functions of the user interface (the View) from the business layer (the model) by using a controller.
MVP is Model-View-Presenter is (in my opinion) a better alternative in that it separates the functionality much better such that the view knows nothing about the model (in the MVC pattern the view did know about the model. In both patterns the model does not know about the view.
MVP is also more easily unit testable than MVC.
You might want to read more on the subject: August 2006's MSDN Magazine had an excellent article on it: http://msdn.microsoft.com/msdnmag/issues/06/08/DesignPatterns/default.aspx[^]
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What about designing the web application in 3 tiers(Data-business-presentation) does this make the same purpose?
You said :separating out the functions of the user interface (the View) from the business layer (the model) by using a controller.What do you mean by using a controller?May you explain it to me?.
I am too late but i will never give up
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TheEagle wrote: What about designing the web application in 3 tiers(Data-business-presentation) does this make the same purpose?
Then the MVC or MVP will be part of the business and presentation tiers of a three-tier application.
TheEagle wrote: What do you mean by using a controller?
A controller is a class (or classes) that interrogates the model on the view's behalf. The controller can be part of the Strategy pattern. This means that for different application states you could swap in different controllers.
TheEagle wrote: May you explain it to me?
There are many books available on the subject that would explain it much better than I. You could start by reading the article I linked to earlier.
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Thank you very much..I will read the article.
I am too late but i will never give up
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Hi,
Using CompareValidator control in .NET 2005 can I compare 2 date values in dd/MM/yyyy format? Bcoz the default behavior for date comparision is that the comparision out is proper only for mm/DD/yyyy values.
Regards,
Vipul Mehta
Regards,
Vipul Mehta
Sr. Software Engineer
NIIT Technologies Ltd
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Frndz,
How do I compare 2 date values in JavaScript?
Regards,
Vipul Mehta
Regards,
Vipul Mehta
Sr. Software Engineer
NIIT Technologies Ltd
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Use the comparison operators, e.g. <, >, <=, >=, ==, !=.
---
b { font-weight: normal; }
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hi dear
i wanna know how can one configure his application on iis.
i.e. how can we make our application online to our user / client after creating it.
thanks & regards
vishal sharma
vishalsharma556@yahoo.co.in
Thanks & Regards
Vishal Sharma
vishalsharma556@yahoo.co.in
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OK this one has me stuck
In the below code I am pointing to a Access DB in the App_Data folder in the root of my web site. When I run the code it errors telling me that the dbo.mdb if not in "C:\Program Files\Microsoft Visual Studio 8\Common7\IDE"
If I rename my "ShowroomRegDB" Access Db to dbo.mdb and copy to the path it is looking all is fine????
Why is it not using the connection path I have placed in the Connection String???
Please help.....
<br />
Dim strConn As String = ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("App_Data/ShowroomRegDb.mdb"))<br />
<br />
Dim oleConn As New OleDbConnection(strConn)<br />
Dim oleComm As New OleDb.OleDbCommand<br />
<br />
oleComm.Connection = oleConn<br />
Try<br />
oleConn.Open()<br />
<br />
oleComm.CommandText = ("SELECT Important FROM dbo.ConfigTb WHERE ConfigID = 1")<br />
Dim Important As String = Convert.ToString(oleComm.ExecuteScalar())<br />
<br />
oleComm.CommandText = ("SELECT COUNT(*) FROM dbo.IssueTb WHERE Closed = FALSE")<br />
Dim count As Integer = Convert.ToInt32(oleComm.ExecuteScalar())<br />
<br />
oleComm.CommandText = ("SELECT COUNT(*) FROM dbo.SuggestionTb WHERE SugClosed = FALSE")<br />
Dim count1 As Integer = Convert.ToInt32(oleComm.ExecuteScalar())<br />
<br />
oleConn.Close()<br />
<br />
labIssueNumber.Text = count.ToString<br />
labSugNum.Text = count1.ToString<br />
labImportant.Text = Important.ToString<br />
<br />
Catch ex As OleDbException<br />
labError.Text = ex.Message<br />
End Try<br />
When people make you see red, be thankful your not colour blind.
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Try adding a "/" to the beginning of your connection string
Dim strConn As String = ("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("/App_Data/ShowroomRegDb.mdb"))
This tells the webserver to look in the root of your webfolder.
Kind regards - Jakob 
*********************************************
Three kinds of people in the world:
- Those who can count..
- Those who can't!
10 kinds of people in the world:
- Those who understand binary
- Those who don't
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No Good
It also fails if i put the absolute path "C:\Inetpub\wwwroot\ShowroomRegister\App_Data\ShowroomRegDB"
Very Strange...
I know the Connection string works but it keeps looking for dbo.mdb for some reason.
I'm stumped.
When people make you see red, be thankful your not colour blind.
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Try altering your SQL commands from ("SELECT Important FROM dbo.ConfigTb WHERE ConfigID = 1")
to:
("SELECT Important FROM ConfigTb WHERE ConfigID = 1")
I think the "dbo" - may be confusing the Driver.
Kind regards - Jakob 
*********************************************
Three kinds of people in the world:
- Those who can count..
- Those who can't!
10 kinds of people in the world:
- Those who understand binary
- Those who don't
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I tried to make as simple example using web service as possible:
- I created a web service project from the templated installed in VS2005
- I mark it as a virtual directory and put it under C:\Inetpub\wwwroot directory
- I created a windows application, and added web reference to http://83.175.131.18/MartinezService/Service.asmx (you may try that yourself)
- Then I tested it with:
privatevoid Form1_Load(object sender, EventArgs e)<br />
<br />
{<br />
<br />
MartinezService.Service s = new WindowsApplication1.MartinezService.Service();<br />
<br />
MessageBox.Show(s.HelloWorld());<br />
<br />
}
It worked perfectly.
But when I send this windows application to my friend and ask him to execute it, he got the following error:
System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: Próba przeprowadzenia operacji, wykonywanej przez gniazdo, na nieosi¹galnym hoœcie (try to perform an operation on non-reachable host)<br />
at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)<br />
at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)<br />
at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)<br />
--- End of inner exception stack trace ---<br />
at System.Net.HttpWebRequest.GetRequestStream()<br />
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)<br />
at WindowsApplication1.MartinezService.Service.HelloWorld() in D:\C# WORKSPACE\WindowsApplication1\WindowsApplication1\Web References\MartinezService\Reference.cs:line 78<br />
at WindowsApplication1.Form1.Form1_Load(Object sender, EventArgs e) in D:\C# WORKSPACE\WindowsApplication1\WindowsApplication1\Form1.cs:line 21<br />
at System.Windows.Forms.Form.OnLoad(EventArgs e)<br />
at System.Windows.Forms.Form.OnCreateControl()<br />
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)<br />
at System.Windows.Forms.Control.CreateControl()<br />
at System.Windows.Forms.Control.WmShowWindow(Message& m)<br />
at System.Windows.Forms.Control.WndProc(Message& m)<br />
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)<br />
at System.Windows.Forms.ContainerControl.WndProc(Message& m)<br />
at System.Windows.Forms.Form.WmShowWindow(Message& m)<br />
at System.Windows.Forms.Form.WndProc(Message& m)<br />
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)<br />
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)<br />
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)<br />
<br />
Can someone help me?
Thank you very much in advance
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Hi
i want to reorder the rows(move up and down) in the datagrid Dynamically.
How it will done?
Plz tell me
thanks and regards
Aavesh
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Do you just want the rows to be reordered on the webpage, or should they in some way be reordered in the underlying data as well?
This might help if you just want the rows reordered on the page: http://msdn.microsoft.com/msdnmag/issues/05/03/CuttingEdge/
Otherwise, let us know, and we'll try to help.
Let me know where you get the data from (sqldatabase, dataset, etc), and how you decide what order the rows are in.
Kind regards - Jakob 
*********************************************
Three kinds of people in the world:
- Those who can count..
- Those who can't!
10 kinds of people in the world:
- Those who understand binary
- Those who don't
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i want to add webpart dynamically
plz give me some fruitful code for it
i am trying it form last3 days
how to add webparts dynamically in webpartzone
see d site www.netvibes.com
click on add content then add feed give url : http://newsrss.bbc.co.uk/rss/newsonline_uk_edition/front_page/rss.xml
then that conrol will be dynamically added to our page
i want to do xactly same as it.
plz give me guidance i want to solve this now its to tiresome
intresting in asp.net
-- modified at 5:33 Saturday 26th August, 2006
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hi guys...
Thanx for ur help the previous time. I have a query again, I need to make the text box that appears at edit command in a grid , a Multiline text box.
Thanx again..
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Make the column a template one and change than change the textbox to multiline.
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<asp:TemplateColumn>
<ItemTemplate>
<asp:TextBox id="TextBox2" runat="server" TextMode="MultiLine"></asp:TextBox>
</ItemTemplate>
</asp:TemplateColumn>
=postmaster
www.programmingknowledge.com/
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When i am trying to update values in dropdownlist programmatically,and if more taht one value in the list as same,all the values should be updated.my code is
strUpdate = "Update Division Set Divi_name='" & nameBox.Text & "' where Divi_name='" & DivList.SelectedItem.Text & "' "
cmdUpdate = New SqlCommand(strUpdate, dbConn)
cmdUpdate.ExecuteNonQuery()
Lblmess.Text = "Record Updated"
DivList.SelectedItem.Text = nameBox.Text
But when i run the webpage it is updating only one value,not all the values.
If i click on refresh button,it doesnt give any change in the list,but records are updated in the database.
how to solve,urgent
kissy
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hi all..i need code for conversion e.g if we give input in 1 language(english) we should get output in another language(hindi)
thanq.....bye
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There is no such conversion. It's called translation, and you don't only need code for it, you also need a vast database of words and phrases and their translations.
---
b { font-weight: normal; }
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thank you so much, so can i get the code for that..maintaining databases n their connectivity i ll look after that..please can you judge me how to approach this task
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Hi to all programmers!
Can anyone of you suggest on the best approach in interfacing a scanner to a web application. I am using a Canon 5010c model that is capable of scanning multi-page. I tried a TWAIN library from this site but it cannot detect the driver of the scanner.
And also convert the scanned image into pdf form.
VTY,
allan
-- modified at 23:21 Friday 25th August, 2006
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