Mistakes are Made by C# Programmers : How You Can Avoid Them?

What common mistakes are made by C# programmers and how you can avoid them?

programming_mistake

  • Using a reference like a value or using value like a reference

This usually happens in case of a novice C# programmer. If you don’t know about the object and can’t differentiate in between value type and reference type, you could run into some surprises.

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In the above image, both the Point and Pen objects were made in similar manner, however the Point1 value remained constant when X coordinate value was assigned to Point2. But the Pen1 was changed while developer assigned new color to Pen2.

How to know that pint1 and point 2 both contain their own copy of a point object, but pen1 and pen2 consist references to the same Pen object?

You can place your cursor over the name of the object type and press F12 tab. This can be easily done in Visual studio. It is important to know that you are dealing with apt type of object or not.

public struct Point { … }     // defines a “value” type

public class Pen { … }        // defines a “reference” type

  • Not understanding or misunderstanding default values for uninitialized variables

Please note- the value types cannot be null in C#. Each value type has its own default value. Even uninitialized variables of value types contain their default value.

  • Implementing unspecified string comparison methods

Many programmers use ‘==’ operator to compare string. This method is one of the least desirable methods used by programmers as it doesn’t specify the comparison type desired for code. Professionals recommend using Equals method to test string equality.

Some tips and guidelines to use equals method:

  • While comparing strings input by user, culture-sensitive comparison should be used (CurrentCulture or CurrentCultureIgnoreCase).

  • You can use ordinal comparison (Ordinal or OrdinalIgnoreCase) while comparing programmatic strings

Note- besides Equals method, you can also avail Compare method that provides you information on relative orders of strings or test for equality.

  • Failing to consider the underlying LINQ statement objects

LINQ is useful and consistent method to query collections of objects, still you need to know whether your statement will be translated to other language other than C# or not, this ensures the code behavior that is expected at runtime.

Some other mistakes are:

  • Avoiding exceptions

  • Eliminating free resources

  • Making use of wrong type of collection for the project

  • Getting puzzled with extension methods

  • Allowing compiler warnings to accumulate

Things NOT to do in ASP.net development

MS CRM Development Offers Customization Capabilities

Companies often use MS CRM development tools to organize their clientele. IT consultants offering professional CRM services are helping companies in making more profits at lower costs.

The business sector experiences throat-cut competition and every organization make several attempts to achieve growth and development in its field. But one should know that there are various elements that define growth of a company. Management plans various strategies to boost profit margins at lower expenditure. To achieve these profit margins, companies have started installing several software systems. These systems not only empower companies to manage their clients and particulars, but also help them in automating various processes.

CRM-Implementation

How automation of processes influences productivity?

With automated processes, staff employees get more time to do other tasks. Did not get it? MS CRM Development system streamlines workflow of the management by automating various processes. This automation initiates productivity and bring extra time for department people to do other important tasks. Automated tasks and processes offer fast results with lesser bugs and errors. Hence, the team does not need to spend its time on fixing bugs and errors in the report and instead they can do something else in that period, which eventually influences productivity of the staff employees.

CRM development systems come with various business tools that help in simplifying business solutions. Dynamics CRM is a robust and powerful tool for every business as it helps in developing high end business solutions. It provides core insights of the business and a holistic view of clients. You can even get your customized design from the vendor without compromising any of the features.

CRM can be your perfect marketing partner as it is mainly focuses on the marketing, clients, and sales services field. It also assists various departments in managing campaigns and strategies together. The sales tools offered by CRM systems simplify internal sales processes and give extra time to sales department to focus on other crucial issues.

It makes sales department insightful, connected, productive, quick, and collaborative. Your marketing department can determine what clients are demanding and this is possible with CRM tool. These solutions help companies in understanding demands and desires made by clients. These also enable customer service desk to use fine strategies for satisfying potential clients.

A company hires MS CRM consultants for several services. These consultants can better guide them over CRM issues and services.

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Every business software solution should be user-friendly to achieve certain goals and objectives without losing potential clients. Microsoft dynamics CRM 2015 will be offering list of enhancements, including one literally audible. Users will be able to run Cortana (one of the enhancements) on Windows phone 8.1 and interact with their CRM suite.

CRM is a worth solution for businesses at it helps in handling all existing and potential clients. At times, enterprises stuck in a situation where they find no company to assist in CRM development. Well, this can be sorted out by availing CRM Outsourcing facilities from other countries. There are many ways to meet and make new clients for your businesses.

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Application Outsourcing Maintenance Trends And User Experience

A study has revealed that application maintenance is the third most demanded IT services among customers. People, who hire app developers to avail desired business application as per the standards and specifications, also outsource application maintenance services from same (sometimes different) vendor. Study says people are getting in touch with third party service provider, who provide app development and hosting related services at minimum price. However, the rate of demand and supply of such services is moderate.

outsourcing-profileIn the above figure, we have shown our report that is based on the app maintenance outsourcing trends and customer experience. Here, we have compared outsourcing maintenance services with IT functions.

Outsourcing Frequency and Level
The frequency of app maintenance outsourcing hits maximum numbers on chart after application development level that simply means the percentage of companies presently availing these services is significant. It is moderate and major IT companies are making selective approach for these services.

Growth and Volatility
Ratings for growth trend and volatility are also moderate. Under growth trend, we recorded and calculated the statistics of clients that plan to avail more outsourcing application maintenance services from third party vendors in their present budget, excluding the decreased amount of outsourcing percentage.

We measure the volatility by calculating the percentage of companies that are making changes to their outsourcing work amount, regardless of increasing or decreasing it. And again, both the growth trends and volatility appear to be moderate alteration in outsourcing app maintenance.

Service and Expenditure Success
IT companies are getting moderate amount of success in lowering costs to outsource application maintenance services. The decision helped them in getting major number of clients across the globe.

App software maintenance is critical and necessary job for every IT company. Hardware today has become cheaper to maintain and procure, but maintaining software consumes a lot of efforts and time of the engineers. Also, the cost and expenditure to maintain and sustain IT software is expensive as compared to development (when you take it for long-run). To avail premium software solutions and outsource application maintenance services, you can contact experts who are having years of experience and massive portfolio.

The concept of Hadoop Distribution File System

Aegis Hadoop developers will explain the concept of Hadoop Distribution File System (HDFS) to entire development community across the globe. HDFS is intended to adhere to the conventional distributed file systems and Google File System advantages. The Apache Hadoop framework has its own file system- HDFS. It is a fault-tolerant, self-healing system that is developed in Java to store excessive data (in petabytes or terabytes). Regardless of format and schema, HDFS offers high scalability, reliability, and throughput while running on vast clusters of a commodity machine.

hdfs-magic
A brief about the HDFS

HDFS is designed and intended to address most complications and problems associated with conventional file distributed system. Major characteristics of HDFS:

1. Massive storage of data- HDFS supports zeta bytes or petabytes, or more data.

2. Commodity Machine usage – User does not require highly expensive machine to run HDFS. User can run HDFS on easily available commodity hardware. It also helps in managing data and addressing issues without interrupting the client/user.

3. Single writer/ Multiple reader model- HDFS follows the principle ‘Write once-read many’ to resolve issues of data coherency. HDFS is intended for batch processing and not for interactive usage.

4. File system management- Along with conventional file systems, file management system is also supported by HDFS. It includes write, read, rename, delete, relocate, and modify directories or files.

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Apache hadoop development tools (HDT) aims at promoting plugins in Eclipse to assist developers and make their development task simple on Hadoop platform. In this blog, we are going to overview of few features offered by HDT.

How to Restrict Unauthorized Request and Response in Java Development

Aegis SoftTech team has resolved the security issues with Java development team in India and made the application safe using different web security rules. They also restricted unauthorized request and response by implementing Security and filters. Here we share the process of restricting such requests and responses for our Java community below.

To make our domain application safe with different web security rules defines in OWASP because application is for multiple user and different user have different role and permission. To restrict unauthorized request and response we have implemented Security and Filters.

1. Http Strict Transport Security :

  • HTTP Strict Transport Security (HSTS) is an opt-in security enhancement that is specified by a web application through the use of a special response header. Once a supported browser receives this header that browser will prevent any communications from being sent over HTTP to the specified domain and will instead send all communications over HTTPS. It also prevents HTTPS click through prompts on browsers.
  • Simple example using max-age:

httpServletResponse.setHeader(“Strict-Transport-Security”,”max-age=31536000 ; includeSubDomains”);

2. Host Response Header :

  • If you are using name-based virtual hosts, the Server Name inside a section specifies what hostname must appear in the request’s Host: header to match this virtual host.

3. X-Frame-Options Response Header :

  • The X-Frame-Options http response header can be used to indicate whether or not a browser should be allowed to render a page in

a <frame>, <iframe> or<object> . We can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

There are three possible values for X-Frame-Options:

DENY

The page cannot be displayed in a frame, regardless of the site attempting to do so.

SAMEORIGIN

The page can only be displayed in a frame on the same origin as the page itself.

ALLOW-FROM uri

The page can only be displayed in a frame on the specified origin.

  • Simple example using sameorigin:

httpServletResponse.setHeader(“X-Frame-Options”, “SAMEORIGIN”);

4. Pragma :

  • The Pragma: no-cache header field is an HTTP/1.0 header intended for use in requests.
  • It is for Cache Control, it does not have to be ONLY for cache-preventing, it can also be used to say “You can cache this
  • Simple example:

httpServletResponse.setHeader(“Pragma”, “no-cache”);

5. Cache-Control :

  • Cache-Control response headers, to give Web publishers more control over their content, and to address the limitations of Expires.
  • Simple example:

httpServletResponse.setHeader(“Cache-Control”,”max-age=0,no-cache, no-store, must-revalidate”);

no-cache —> forces caches to submit the request to the origin server for validation before releasing a cached copy, every time. This is useful to assure that authentication is respected (in combination with public), or to maintain rigid freshness, without sacrificing all of the benefits of caching.

no-store —> instructs caches not to keep a copy of the representation under any conditions. which will prevent request and response from being stored by the cache.

max-age=[seconds] —> specifies the maximum amount of time that a representation will be considered fresh. Similar to Expires, this directive is relative to the time of the request, rather than absolute. [seconds] is the number of seconds from the time of the request you wish the representation to be fresh for.

must-revalidate —> tells caches that they must obey any freshness information you give them about a representation. HTTP allows caches to serve stale representations under special conditions; by specifying this header, you’re telling the cache that you want it to strictly follow your rules.

6. Expires :

  • Expires response headers gives the date/time after which the response is considered stale.
  • Simple example to set date header for expires:

httpServletResponse.setDateHeader(“Expires”, 0);

7. X-XSS-Protection :

  • Cross-site scripting (XSS) enables attackers to inject client-side script into Web pages viewed by other users.
  • A cross-site scripting enabled by default anyway, so the role of this header is to re-enable the filter for this particular website if it was disabled by the user.
  • A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same origin policy

0 -> Disables the XSS Protections offered by the user-agent.

1 -> Enables XSS protections and instructs the user-agent to block the response in the event that script has been inserted from user input, instead of sanitizing.

  • Simple example:

httpServletResponse.setHeader(“X-XSS-Protection”, “1; mode=block”);

8. X-Content-Type-Options:

  • X-Content-Type-Options:is an IE- and Chrome-specific header that is designed to defend against MIME content-sniffing attacks. MIME content-sniffing attacks are a risk when you allow users to upload content (e.g., images, documents, other files) to your website, where they can be downloaded by other users.
  • It prevents the browser from doing MIME-type sniffing.
  • Simple example:

httpServletResponse.setHeader(“X-Content-Type-Options”, “nosniff”);

All these 8 security options will help you in restricting unauthorized response and request in Java web application development. Aegis SoftTech professionals are efficiently using these security options to make their domain safer than before. We have shared these points to help worldwide java developers and development community to bring flawless secure app solutions for users.