Store Page ViewState in Session with asp.net

As we all know we any web page on the internet is state less. We have to write our own mechanism to maintain state between httprequest and httpresponse. Asp.net has great features called viewstate to maintain state during page postback. It will store the element state in hidden variables with _VIEWSTATE. It will look like below.

If you are having large amount of controls then you will have larger viewstate on the page and it will increase your html kb as well as your performance. So to increase the performance of our application we need to store this viewstate in other place. ASP.NET 2.0 has nice new class called SessionPagePersister which will store the viewstate in the session. You just need to override the PageStatePersister property in your page and your viewstate will be on the page.

Here is the code.

Code Snippet

1. protected override PageStatePersister PageStatePersister
2. {
3. get
4. {
5. return new SessionPageStatePersister(this);
6. }
7. \

If you are having so many pages then you have to write that cod manually Instead of doing this you can use inheritance features of C#.NET to write the code in just one way and then inherit your page from that class. Following is the code for that. You can create a class called MyPage that class into all the pages here is the code for class MyPage .

Code Snippet

1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using System.Web;
5. using System.Web.UI;
6. 
   
7. namespace TestBlogApplication
8. {
9. public class MyPage:System.Web.UI.Page
10. {
11. protected override PageStatePersister PageStatePersister
12. {
13. get
14. {
15. return new SessionPageStatePersister(this);
16. }
17. }
18. 
    
19. }
20. \

and Then inherit the class in your page like following.

Code Snippet

1. using System;
2. using System.Collections.Generic;
3. using System.Linq;
4. using System.Web;
5. using System.Web.UI;
6. using System.Web.UI.WebControls;
7. 
   
8. namespace TestBlogApplication
9. {
10. public partial class Page1 : MyPage
11. {
12. protected void Page_Load(object sender, EventArgs e)
13. {
14. 
    
15. }
16. }
17. }
18. 
    

So that's it that way you can increase your application performance via maintaining the viewstate in session. Happy Codding..

Technorati Tags: ViewState,Session,ASP.NET2.0,ASP.NET 3.5,ASP.NET4.0

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Extend your existing classes with extension method in asp.net 3.5

In asp.net 3.5 there is one good features called extension method now you can extend your functionality without modifying existing classes. Extension method allow developers to add own functionality to any existing classes. You don't need to create subclass or don't need to recompile existing classes and still you can extend that class with extension methods. Let's create an example to extend existing string classes to convert a simple string to bold html string.

public static class MyExtensions
{
public static string ConvertToBold(this string mystring)
{
System.Text.StringBuilder myBoldString =new System.Text.StringBuilder(string.Empty);
myBoldString.Append("<strong>");
myBoldString.Append(mystring);
myBoldString.Append("</strong>");
return myBoldString.ToString();  
}
}

So now our extension method is ready. Following the sample code to use this extension method.

protected void Page_Load(object sender, EventArgs e)
{
string helloWorld = "Hello World";
Response.Write(helloWorld.ConvertToBold());
}

While running application you can out like below.

Technorati Tags: Extension,ASP.NET 3.5,C#.NET,String

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What's new in sql server 2008

Microsoft SQL Server are one of the popular RDBMS(Relational Database Management System) all over world. Before some time Microsoft has launched the new version of SQL Server 2008. SQL Server 2008 provides the highest levels of security, reliability, and scalability for your business-critical applications. . Following are the some of new features of SQL Server 2008.

1. Policy based management.
2. Performance Data Collection.
3. Data compression.
4. Resource Generator.
5. Transparent Data Encryption.
6. External Key Management/Extensible Key Management.
7. Data Auditing.
8. Hot-Add CPU and Hot-Add Memory.
9. Streamlined Installation.
10. Server Group Management.
11. Upgrade Advisor.
12. Partition aligned indexed views.
13. Backup Compression.
14. Extended Events.
15. Grouping Set.
16. Merge Operator.
17. Greater Support for LINQ and Entity Framework.
18. Change Data Capture.
19. Table Valued Parameters.
20. Entity data model for entity framework.
21. Synchronization Server with ADO.NET.
22. CLR Improvements.
23. Conflict detection between peer to peer Replication
24. Service Broker Priorities and Diagnostics.
25. Spatial Data with Geography and Geometry data types.
26. Virtual Earth Integration.
27. Sparse Column.
28. Filtered Indexes.
29. Integrated full text search.
30. File stream data.
31. Large user defined types.
32. Large user defined aggregates.
33. Date/Time Data Types.
34. Improved XML Support.
35. ORDPATH.

and many more features are there. It's great rdbms to use in your future projects. Please visit following link to explore above features in great details.

http://www.microsoft.com/sqlserver/2008/en/us/whats-new.aspx

You can download SQL server 2008 Express database for free from following link.

http://www.microsoft.com/express/sql/download/

Technorati Tags: SQL Server,SQL Server 2008,RDBMS,Microsoft

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