New blogger template for My blog - DotNetJaps

I have changed my blogger template to newer version of blogger. Hope you guys liked it. There are some difficulties over there but I still love the changes that blogger has offered. I know my old version of syntax highlighter is not working. But I am fixing that for all the older posts and already did it for some posts.

‘Change is in all things sweet.’

As a philosopher Aristotle has said we all should be ready to change. I have changed my blogger template due to following reasons.

1. It’s more SEO Friendly. It is having less errors on w3c validations and It will increase search engine optimization for my blog. Still blogger template are not totally compliant like word press but blogger has decided to moved in that way so I am going to support that way.
2. It has good way to monetize your blog.
3. It has provided a new feature called ‘Pages’. You can create your own pages like I have created like asp.net interview questions etc. I will going to post some frequently asked interview questions over here.
4. It has providing status same like Wordpress so its good be changed.

Above all, I have also changed my script high lighter version 3.0.83. So there might be some difficulties in older posts but I am going to fix one by one. If you found anything then please fill free to contact me via posting comment on my blog and I am going to fix that right away.

Here is screenshot my blog is look like.

Please fill free to contact me if you have any question. I am going to start posting technical post soon. I need your support and I know you guys are going to provide me that.

Thanks once again all the readers who have made my blog successful.Keep reading it I will going to post more and more.

Technorati Tags: New Blogger,Template

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ASP.NET MVC Razor IsPost property with IF –Else loop

ASP.NET MVC Razor a new view engine from Microsoft looks very promising. Here are example of code where we can determine page is post back or not. It support a IsPost Property which will tell you whether page is post back or not. So based on that we can write code for handling post back. Also one of greatest feature of razor is we can write code for decision making like if else and other stuff with single @ statement isn’t that great stuff.

Here is the stuff how we can write the code with IsPost property.

@{
   var Message="";
   if(IsPost)
   {
  Message ="This is from the postback";
   }
   else
   {
  Message="This is without postback";
   }
}

And we can now print that variable with following HTML Form.

<form method="POST" action="" >
<input type="Submit" name="Submit" value="Submit"/>
<p>@Message</p>
</form>

Here submit button will submit the form and based on that it will print message. Let’s see how it looks in browser before post back and after post back.

And After post back

So that’s it. Now you can do lots of stuff with IsPost property possibilities are unlimited!!. Hope this will help you..Happy Programming.

Technorati Tags: ASP.NET MVC,Razor,IsPost

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Output caching with ASP.NET MVC Razor

Caching data greatly increase the website performance as its not going to do server round trip. I have already mentioned how you can use Output caching in web forms in earlier blog post here. Let’s see how we can do same thing with asp.net mvc. For this example I have used asp.net mvc razor. In asp.net mvc you can use OutputCache attribute to cache the output. Just like below.

[OutputCache(VaryByParam="none",Duration=60)]
public ActionResult Index()
{
ViewModel.Message = DateTime.Now.ToString();
return View();
}

Here it will cache the view for 60 second and will not go for server round trip. Let’s see How it will look into the browser.

You can also set the output caching in web.config and and create output cache profile which you can use any where like following.

<caching>
<outputCacheSettings>
<outputCacheProfiles>
<clear/>
<add
name="MyOuputCacheProfile"
duration="60"
varyByParam="none" />
</outputCacheProfiles>
</outputCacheSettings>
</caching>

Here how you can use that profile.

[OutputCache(CacheProfile = "MyOuputCacheProfile")]
public ActionResult Index()
{
ViewModel.Message = DateTime.Now.ToString();
return View();
}

It support four type of settings for output caching. VaryByContentEncoding, VaryByParam, VaryByCustom,VaryByHeader. Hope this will help you!! happy Programming.

Technorati Tags: ASP.NET MVC,Razor,OutputCache

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What is difference between HTTP Handler and HTTP Module.

Here are the difference between HTTP Handlers and HTTP Modules.

Http Handlers:

Http handlers are component developed by asp.net developers to work as end point to asp.net pipeline. It has to implement System.Web.IHttpHandler interface and this will act as target for asp.net requests. Handlers can be act as ISAPI dlls the only difference between ISAPI dlls and HTTP Handlers are Handlers can be called directly URL as compare to ISAPI Dlls.

Http Modules:

Http modules are objects which also participate in the asp.net request pipeline but it does job after and before HTTP Handlers complete its work. For example it will associate a session and cache with asp.net request. It implements System.Web.IHttpModule interface.

HTTP Handler implement following Methods and Properties

1. Process Request: This method is called when processing asp.net requests. Here you can perform all the things related to processing request.
2. IsReusable: This property is to determine whether same instance of HTTP Handler can be used to fulfill another request of same type.

Http Module implements following Methods and Properties.

1. InIt: This method is used for implementing events of HTTP Modules in HTTPApplication object.
2. Dispose: This method is used perform cleanup before Garbage Collector destroy everything.

An Http Module can Support following events exposed to HTTPApplication Object.

1. AcquireRequestState: This event is raised when asp.net request is ready to acquire the session state in http module.
2. AuthenticateRequest: This event is raised when asp.net runtime ready to authenticate user.
3. AuthorizeRequest: This event is raised when asp.net request try to authorize resources with current user identity.
4. BeginRequest: This event is raised when HTTP Modules receive new request.
5. EndRequest: This event is raised before sending response to client.
6. Disposed: This event is raised when http modules completes processing of request
7. Error: This event is raised when any error occurs during processing of request.
8. PreRequestHandlerExecute: This event is raised just before ASP.NET begins executing a handler for the HTTP request. After this event, ASP.NET will forward the request to the appropriate HTTP handler.
9. PostRequestHandlerExecute: This event is raised when when HTTP Handler will finish the execution of current request.
10. PreSendRequestContent: This event is raised just before ASP.NET sends the response contents to the client. This event allows us to change the contents before it gets delivered to the client. We can use this event to add the contents, which are common in all pages, to the page output. For example, a common menu, header or footer.
11. PreSendRequestHeaders: This event is raised before asp.net Just send response header to client browser.
12. ReleaseRequestState: This event is raised when asp.net runtime finishes handling of all the request.
13. ResolveRequestCache: This event is raised to determine whether the request can be fulfilled by returning the contents from the Output Cache.
14. UpdateRequestCache: This event is raised when ASP.NET has completed processing the current HTTP request and the output contents are ready to be added to the Output Cache.

Hope this will help you better understanding of HTTP Handler and HTTP Modules. I will post an real time implementation code in forthcoming blog post.

Technorati Tags: HTTPHandler,HTTPModule,ASP.NET,ASP.NET RunTime,IASPI

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GUID Vs Int data type as primary key

Recently one of my friend ask me when I should go for GUID and When I should go for Int as primary key in table. So decided to write a blog post for it. Here are advantages and disadvantage of the GUID and INT.

INT Data Type:

Advantages:

1. Its required small space in terms of the storage it will only allocates 4 bytes to store data.
2. Insert and update performance will be faster then the GUID. It will increase the performance of the application.
3. Easy to index and Join will give best performance with the integer.
4. Easy to understand and remember
5. Support of function that will give last value generated like Scope_Indentity()

Disadvantages:

1. If you are going to merge table frequently then there may be a chance to duplicated primary key.
2. Limited range of uniqueness if you are going to store lots of data then it may be chance to run out of storage for INT data type.
3. Hard to work with distributed tables.

GUID Data Type:

Advantages:

1. It is unique for the current domains. For primary key is uniquely identifies the table.
2. Less chances of for duplication.
3. Suitable for inserting and updating large amount of data.
4. Easy for merging data across servers.

Disadvantages:

1. Bigger storage size (16bytes) will occupy more disk size then integer.
2. Hard to remember and lower performance with Join then integer.
3. Don’t have function to get last uniquely generated primary key.
4. A GUID primary Key will added to all the other indexes on tables. So it will decrease the performance.

Conclusion:

From above the advantages and disadvantages we can conclude that if you are having very large amount of data in table then go for the GUID as primary key in database. Otherwise INT will give best performance. Hope this will help you. Please post your opinion as comment.

Technorati Tags: GUID,INT,SQL Server2008,SQL Server

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Difference between int.Parse and Convert.ToInt32

I know this post sound basic to most of people but still lots of people does not know this. So I decided to post a blog post for this. Both int.Parse and Convert.ToInt32 are used to convert string into the integer but Only difference between them is to Convert.ToInt32 handle null and returns ‘0’ as output and int.parse is not going to handle NULL and will give a Argument Null Exception. Here is the example for that both are almost same except handling null.

          string convertToInt = "12";
          string nullString = null;
          string maxValue = "32222222222222222222222222222222222";
          string formatException = "12.32";

          int parseResult;

          // It will perfectly convert interger
          parseResult= int.Parse(convertToInt);

          // It will raise Argument Null Exception
          parseResult= int.Parse(nullString);

          //It willl raise Over Flow Exception
          parseResult= int.Parse(maxValue);

          //It will raise Format Exception
          parseResult= int.Parse(formatException);


          //For Convert.ToInt32
      
          //It will perfectly convert integer
          parseResult= Convert.ToInt32(convertToInt);

          //It will ouput as 0 if Null string is there
          parseResult= Convert.ToInt32(nullString);

          //It will raise Over Flow Exception
          parseResult= Convert.ToInt32(maxValue);

          //It will raise Format Exception
          parseResult= Convert.ToInt32(formatException);

Hope this will help you understand the better but still there is third option available called int.TryParse which can handle all kind of exception and return result as Output Parameter.

Technorati Tags: int.Parse,Convert.ToInt32,int.TryParse

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Microsoft Community Techdays in Ahmedabad on 11th December

Microsoft Community Techdays is a great event organized by Microsoft for Every Quarter. Its going to be there on 11th December in Ahmedabad. I want to be there hope I could as my schedule is so start but you guys can not forgot to register at this event. It’s totally free and It’s great place to meet lots of interesting guys like Pinal Dave,Jacob Sebastian etc.

Here are the schedule for Ahmedabad.

10:15am - 10:30am
Welcome - Pinal Dave

10:30am - 11:15am
SQL Tips and Tricks for .NET Developers by Jacob Sebastian

11:15am - 11:30am
Tea Break

11:30am - 12:15pm
Best Database Practice for SharePoint Server by Pinal Dave

12:15pm - 01:00pm
Self Service Business Intelligence by Rehab

01:00pm - 02:00pm
Lunch

02:00pm - 02:45pm
Managing your future, Managing your time by Vinod Kumar

02:45pm - 03:30pm
Windows Azure News and Introducing Storage Services by Mahesh Devjibhai Dhola

03:30pm - 03:45pm
Tea Break

03:45pm - 04:30pm
Improve Silverlight application with Threads and MEF by Prabhjot Singh Bakshi

04:30pm - 04:45pm
Thank you - Mahesh Devjibhai Dhola

So don’t forgot to be there. Register your seat at : http://www.communitytechdays.com

Technorati Tags: Micorosft Community Techadys,Ahmedabad

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