Below are the 20 most recent journal entries recorded in Manoj Agarwal's LiveJournal:

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Tuesday, December 8th, 2009
4:02 pm	"GetTypeHashCode()': no suitable method found to override" error in your ASP.NET application I am developing a MVC application and got an error which I couldn't solve for long. The error had this string in it- GetTypeHashCode()': no suitable method found to override I found the solution on this post- Error 35 'ASP.admin_managepolls_aspx.GetTypeHashCode()': no suitable method found to override There are two possible causes- 1) You have inherited your page (or View in MVC) from the wrong class 2) Delete temporary ASP.NET files. For me the first point was the cause (Comment on this)
Thursday, November 26th, 2009
10:33 am	Which to use- ASP.NET, MVC, ASP.NET AJAX or Dynamic Data? Well, if you are confused about this then this is a great and must read article- The Four Pillars of ASP.NET (Comment on this)
Wednesday, November 18th, 2009
3:19 pm	Understanding IEnumerable<T> IEnumerable<T> plays an important role when working with Linq. Here are two short articles which explain the basics of IEnumerable<T>- LINQFarm: Understanding IEnumerable<T>, Part I The LINQ Farm Part II: Query Expressions (Comment on this)
Friday, November 13th, 2009
4:02 pm	Salted passwords Here is an excellent article which explains why salt passwords and suggests a good way to do that (using username or userid as the salt)- Could you Pass the Salt? Improving the Security in Encrypting Passwords using MD5 (Comment on this)
2:39 pm	Came across a beautiful way of wrapper class for sessions Usually in ASP.NET sessions are used a lot and the session name (key) is used in multiple places. Its difficult to keep a track of which all sessions (keys) are used in the application. I came across a nice way to solve this problem and make your application cleaner. Please go to following link and search for class SessionHandler in it (its around the middle of the thread). Though the post is for ASP.NET MVC this particular class can be applied for your ASP.NET apps also. http://stackoverflow.com/questions/915470/asp-net-mvc-session-vs-global-vs-cache For each session define a property and then read and set sessions in a strongly typed way! (Comment on this)
Tuesday, November 10th, 2009
7:04 pm	CSS quick lookup Do you know difference between some of these CSS style definations- .abc {} #abc {} td {} td.red {} I found this link to be useful in explaining this. If someone knows a better link then pl share. Defining Classes in CSS (Comment on this)
Friday, November 6th, 2009
5:16 pm	Understanding the Repository Pattern Found these links to be useful- Working With ASP.Net MVC Part 2 - The Model And The Repository Pattern (Comment on this)
5:09 pm	Understanding Inversion of Control design principle These articles were found useful- On Inversion of Control This explains the principle conceptually Inversion of Control This explains the principle with a sample application. I suggest you download the application and understand its working in detail. (Comment on this)
Thursday, October 29th, 2009
11:25 am	Overview of ASP.NET MVC ASP.NET MCV I found this series of tutorials to be of good help to get you started and develop a good basic understanding good enough to make your own MVC applications- ASP.NET MVC Overview This tutorial explains the three components (Model, View, Controller) of a MVC application and tries to explain when to use a regular ASP.NET forms application and when to use an MVC application Create a Movie Database Application in 15 Minutes with ASP.NET MVC (C#) How to create your first MVC app Understanding Models, Views, and Controllers (C#) Get introduced to the different parts of an ASP.NET MVC application MVC Framework and Application Structure If you have made a sample MVC project (by following some tutorial or using the Visual Studio MVC wizards) then this tutorial is good for understanding the various folders created in the solution and understanding which file gets called and how ASP.NET MVC Controller Overview Get to learn more about MVC controller ASP.NET MVC View Overview Get to learn more about MVC Views Displaying a Table of Database Data Get to learn more about MVC Views Misc Links Building Custom ASP.NET MVC Controls Using jQuery Grid With ASP.NET MVC LINQ To SQL Understanding LINQ to SQL Query Translations This article from Scott Gu gives great links for learning LINQ To SQL (Comment on this)
Sunday, October 4th, 2009
1:53 pm	Review of the hindi movie Wake Up Sid Its a great movie. Very entertaining all through the movie. I recommend this movie with a caution. If find some college fun diffcult to see then you might not like this movie. I mean- if you like versy serious types of movies then you might not like this movie. Cast: Ranbir Kapoor, Konkona Sen, Anupam Kher, Supriya Pathak Director: Ayan Mukherjee Time: 2 hrs 15 mins (Comment on this)
Wednesday, September 30th, 2009
12:07 pm	Issues with Microsoft Paint- openning slowly and taking too much memory I have been using MS Paint for many years now to do simple things with images like store a screen snapshot or mark something on it etc.. All of a sudden Paint started to take awfully lot of time to start up and would take a lot of memory. When I tried to save a file or do any operation it would say not enough memory! Did some googling and found the problem to be that it was opening with default size of the image as very large and so consumed a lot of memory! Here are good links to resolve the issue- Microsoft Paint Err Msg: Not Enough Memory or Resources... MS Paint problems The second link give a lot of other useful tips on computer maintenance too! (Comment on this)
Wednesday, September 2nd, 2009
6:07 pm	Aquarium basics- how to release fishes into an aquarium This link explains it really well. It also explains fish versus water ratio i.e. how many fish we can keep in an aquarium- http://animal-world.com/encyclo/fresh/fresh.htm (Comment on this)
Tuesday, August 4th, 2009
10:42 am	What Is Silverlight? For one of the projects I was working on the client wanted to know whether Silverlight can be used. Found a nice article on Silverlight which helped me decide. What Is Silverlight? (Comment on this)
Saturday, July 4th, 2009
8:02 pm	Found a good doctor in Pune for kidney stones My wife was in great pain due to kidney stones and we first went to AMAI's hospital in Erandwane run by Dr Paithankar. The first interest of the doctors there seemed to be in getting her admited (not difficult to guess why). We were not satisfied there. We then went to Dr. Shivadeo Bapat, who is also referred to as Dr. Senior Bapat. His clinic is opposite Kamala Nehru Park and phone numbers are 2567 2310, 2567 3900. We are so far quite happy with the treatment he has given. So for those living in Pune I think he is worth going to. For those having stones which are small here are the tips we got- 1. Drink lots of water 2. Keep an active life style- getting enough exercise 3. Go some exercise like skipping so that the stones move and come out! 4. Get a sonography done once a year to check if any stone is getting too big (Comment on this)
7:54 pm	Basic areas to focus on if you intend to get into web development If you want to learn web technologies then here are some basic areas to improve your knowledge in. This should help starters/freshers who already are into computers but want some guidance. Main aim is to improve your basics and fundamentals. So the areas are- Databases 1. What are tables, indexes (indicies)- primary key and foreign key etc.. 2. Should be able to design table structure for given requirement- I can send you sample requirements if you like 3. Writing select, insert and delete statements (DML) 4. Should have good command over writing different select queries Web technologies 1. HTML- a) should know basic structure of an html page- the various sections like title, script, style, body etc.. b) know basic html tags like table, form, all the html controls - textbox (input box), file, drop down etc.. c) should know what styles are and what css is. Should be able to write simple css styling 2. JavaScript- a) should understand what it is, why and where it is used. b) should have basic knowledge of its syntax so that can write simple/moderate JavaScript functions. Need not know everything- just the basics 3. Basics of web- where is websites hosted and concept of client (browser) and server, what are the major browsers available Learning the above is ofcourse an on-going process in the sense that even experts in the field learn more about the topics. But for started they should I think be able to cover this in about a month or two by spending few hours daily on it. After this you can go into mastering some technology like .NET or Java so that you can write good web and other type of applications (Comment on this)
Monday, June 22nd, 2009
3:07 pm	Solution For "ORA-01400: cannot insert NULL into error when text field is assigned empty string" This bug is quite frustrating, especially for those used to programming in Microsoft .NET and using Microsoft SQL Server. Here is an extract from the post COOL - Bugs: bug #22381, Oracle treats empty string...- Oracle treats empty string "" as NULL. This is a branch off COOL bug #22369. This is a fact: in Oracle's own words, "Oracle Database currently treats a character value with a length of zero as null. However, this may not continue to be true in future releases, and Oracle recommends that you do not treat empty strings the same as nulls." Apparently however this statement has been the same for several years, and it is unlikely that this will change any time soon. The solution we used in our project is that before saving to database we replaced empty string "" by a single space " ". In the same way, before displaying replace " " by "". Other option could be to make these fields as nullable in the database and then handle nulls (which are not as difficult as it seems). (Comment on this)
Sunday, June 14th, 2009
11:13 am	Difference between Int32.Parse(), Convert.ToInt32(), and Int32.TryParse() Here is a great article which provides the answer- Difference among Int32.Parse(), Convert.ToInt32(), and Int32.TryParse() (Comment on this)
Wednesday, May 13th, 2009
1:14 pm	guidelines for web development Many organizations in the Netherlands follow these guidelines which are internationally recognized and have been listed here by the dutch government. The validators like validator.w3.org just check on technical errors. Besides that these guidelines must be followed There are guidelines for web development http://www.webrichtlijnen.nl/english/ For projects/ webdevelopment the order of priority to comply with is: 1) specifications by client 2) current / existing approach followed by client 3) guidelines described on http://www.webrichtlijnen.nl/english/ and the validator.w3.org must give zero errors. so we must acknowledge ourselves with these very well. src : From our company owner Mr. Marco (1 Comment |Comment on this)
Saturday, April 18th, 2009
4:02 am	Blanking out coverage for a good candidate like Shri Arun Bhatia for Pune Lok Sabha elections 2009 In past few months I have noticed this so often. I have no doubt in my mind that Indian Express Pune is just blatantly blanking out coverage for this candidate. How many constituencies in India have a worthy candidate standing? And when there is one people ignore him and newspapers which stand for "Journalism of Courage" do this. Why is Indian Express Pune doing this? Its not difficult to guess... I have registered an e-complaint- Indian Express Pune Complaints - Suspicion your blanking out coverage for a good candidate for Pune Lok Sabha elections 2009 I have also submitted a written complaint to the Indian Express Pune editor Mr. Vinod Mathew Jacob and send copies to- • Mr. Shekhar Gupta, Editor-in-Chief • Mr. Raj Kamal Jha, Executive Editor • Mr. Kumar Ketkar, Chief Editor Loksatta • Mr. Om Thanvi, Editor Jansatta Lets see if they act. (Comment on this)
Saturday, March 21st, 2009
5:27 pm	Garden Court resturant Pune- disappointing I visted this resturant yesterday with my family. We were very excited about going there and were planning about it for long. I had been there many years back and remembered the great views of the city that are got. Our visit turned out to be a total anti-climax. Almost everything disappointed us. The reasons being- The prices were VERY high- higher than many of the upper end resturants in Pune. For example, Veg Spring rolls were Rs130, Veg Hakka Noddles was Rs 135, Butter Nan was Rs40, the curry we ordered was Cheese Balls Masala was Rs 160. service was very ordinary- the waiters weren't couteous enough, no hand wash bowls given after dinner etc.. This was especially disappointing considering the price The food was spicy. We specifically asked to be given not even medium but very mild food. Even the pring rolls were spicy. When we pointed this out to them they were not ready to accept it- they said that spring rolls are never spicy- well these ones were. And not just me but our entire family found it so. Infact, we did not even eat it fully and there were few pieces left in the end Due to some big buildings which have come up near by the views are no longer that good. They are yet not bad though. While leaving I asked if they had any feedback form- they had none (Comment on this)