Site Logo
Looking for girlfriend > Looking for a friend > How to find the age of a person in c#

How to find the age of a person in c#

Site Logo

I need to change a C. I would like to know how to write vb. I do not want to make a call to the datbase since the exsiting application uses the original 'datasets' where the programming had to do all the connections to the database. There would be alot less code in C.

SEE VIDEO BY TOPIC: Age Calculator in C#

Content:
SEE VIDEO BY TOPIC: How do I calculate someone's age in C#

Program to calculate age

Site Logo

In the previous lesson, Birthday reminder in C. In today's tutorial, we're going to talk about logic layer design and create C classes that will carry the application logic. Our application is based on people's birthdays, so they will need a class all to themselves.

Make sure you add the public modifier before the class name. We'll set these properties using a parametrized constructor. After which, the class will look something like this:. The other two properties will contain additional logic, and will be displayed on the form using bindings.

The Age property calculates and returns a person's current age. You can't just subtract two dates and expect to get the right answer.

A TimeSpan cannot determine the number of years, only a number of days, remember? We will perform the age calculation as follows:. The RemainingDays property returns how many days are left until the person's birthday. To do so we will have to include the following steps:. The people will be listed, so overriding the class' ToString method to make it return the person's name will prove to be very useful:.

Another logical component we will have to add to the application is the "person manager". The class will be able to add, remove and save a list of people into a file and load it afterward. Also, it'll be able to find the person that has the nearest upcoming birthday. Which is great because it would be very confusing to refresh dozens of form controls manually when something is altered externally.

Once we add a new person to our application, it will immediately be visible in the person list and will refresh automatically. Any change, e. However, we're going to keep it simple for now, and not add that sort of feature.

After adding all of the content stated above, the PersonManager class will look something like this:.

Other than adding and removing people, the class will also be able to find the person with the nearest upcoming birthday. The FindNearest method finds and stores the person who has the nearest upcoming birthday. To find that person in the list we'll use the LINQ OrderBy method which will sort people based on how many days are left until their birthday.

We'll store the result into a collection and use the var keyword instead of specifying the data type of the collection as is a common practice in LINQ. Then, we'll return the first person that is found. The method should only be called when the list is not empty. We will also set the method as private since we would only call it from within the class. Since the person will be added from the form, we will make the method take person properties as parameters and create a new instance on using the data provided by the user.

We will only store the date from the date of birth exclude time. Before adding a person to the list, we will have to check whether the name is too short or the date selected has not passed. In any of these cases, we'll throw an exception. Exceptions are the only proper way to handle errors in object-oriented applications. If you haven't met them yet, just know that an exception is done using the throw keyword followed by an exception instance.

There are several types of exceptions you could even make your own. In our case, we'll throw an ArgumentException attributed to argument errors. We'll enter the error message in the exception constructor. Once an exception is thrown, a method is terminated. We will get to reacting to the exception once we call the method from the form. A date entered by a DatePicker form control is of the DateTime?

If you went through the object-oriented course up until the end, you know that a question mark refers to the nullable type. A nullable type is an extension of the value data type makes it so it can contain the null value which is normally not allowed. If the date is null, a date has not been entered and we will have to throw an exception. The value of a nullable type can be accessed through the Value property. At the end of the method, we run the FindNearest method since it could be the one that was just added.

Since all this method will do is remove a person instance, the method will take a Person as a parameter. Once the person has been removed, we will run the FindNearest method once again.

In the next lesson, Birthday reminder in C. Downloaded 27x Login Register. Only this week! More info. Lesson 7 - Birthday reminder in C. Like the sound of that? Discover more Person Our application is based on people's birthdays, so they will need a class all to themselves. Age The Age property calculates and returns a person's current age.

We will perform the age calculation as follows: Get the current date excluding time using DateTime. Calculate the age as by subtracting the years from the current date and the date of birth. Which will not give an accurate result. If you were born on February 1, , and now it's January 1, , it is not 20 years, but only Which is why there are more steps to the calculation. For the cases where the current date is lower earlier than the date of birth after adding the years up, we will subtract a year from the age.

Return the final age. Year - Birthday. To do so we will have to include the following steps: Get the current date without time. Subtract the dates and return the difference in days. Since the difference returns a double, we will have to convert it to an int. Today; return Convert. ToInt32 difference.

Add a PersonManager class to the project and make it public. Properties and attributes The person manager will have three public properties. NearestPerson that returns the person with the upcoming birthday. FindNearest The FindNearest method finds and stores the person who has the nearest upcoming birthday.

RemainingDays ; if sortedPersons. Date ; Persons. Article has been written for you by David Capka. Do you like this article? He shares his knowledge with the community and is always looking to improve.

He believes that anyone can do what they set their mind to. Previous article Birthday reminder in C. All articles in this section Form applications in C. Next article Birthday reminder in C. Activities Want to work from home? We got your back! To maintain the quality of discussion, we only allow registered members to comment. Sign in. If you're new, Sign up , it's free.

How to Calculate age from Date of Birth in C#

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Given a DateTime representing a person's birthday, how do I calculate their age in years? However, this assumes you are looking for the western idea of age and not using East Asian reckoning. This is a strange way to do it, but if you format the date to yyyymmdd and subtract the date of birth from the current date then drop the last 4 digits you've got the age :.

I'm trying to calculate the age of a person returned in a search from their date of birth by creating a calcuated field and have run into some trouble. Year - DateOfBirth.

Buy the print C 5. See inside the book for access code and details. While giving you those insights, you learn where and how to use the features to design various kinds of software. NET platform as a whole.

Calculating age from date of birth – C#

In the previous lesson, Birthday reminder in C. In today's tutorial, we're going to talk about logic layer design and create C classes that will carry the application logic. Our application is based on people's birthdays, so they will need a class all to themselves. Make sure you add the public modifier before the class name. We'll set these properties using a parametrized constructor. After which, the class will look something like this:. The other two properties will contain additional logic, and will be displayed on the form using bindings. The Age property calculates and returns a person's current age. You can't just subtract two dates and expect to get the right answer. A TimeSpan cannot determine the number of years, only a number of days, remember?

How to calculate a person’s age using C# and VB.NET

Imagine you are given date of birth of the person and you have to get the age, how would you go about it? In C , every day of the year has got a value, an extra check is required to see if the current Day is less than the day the person was born in, for example, if today is 15th of March and the person was born 1st of March, you have to subtract an extra year. View all posts by Naveed. Please give solution to calculate my age i. You would probably need to create dob variable which would include time as well.

Learning to Program the Object-oriented Way with C. Vinny Cahill , Donal Lafferty.

Gud One.. This age. Thank you faisalman.

Calculate Age In C#

Dates and times can be the most frustrating data types to work with in SQL Server. Learn everything you need to know about the way dates work with this handy blog series and enjoy happier times! This blog is part of a larger tutorial on SQL Server, which you can read here.

SEE VIDEO BY TOPIC: How to calculate someone's age in C#

You have already learned that Console. WriteLine is used to output print values. Now we will use Console. ReadLine to get user input. In the following example, the user can input his or hers username, which is stored in the variable userName.

How to Calculate Age in SQL Server

.

How do I calculate someone's age in C#? in C#. ToDateTime(""); int age = dedeenergyfund.com - dedeenergyfund.com; if (bday > AddYears(-age)) age--; Console.

.

How to Calculate Average Age

.

Take input of age of 3 people by user and determine oldest and youngest among them.

.

.

.

Subscribe to RSS

.

How to calculate a person’s age using C# and VB.NET

.

Comments: 5
  1. Bralmaran

    In no event

  2. Faulkis

    I consider, that you are not right. I am assured. Write to me in PM, we will discuss.

  3. Samurg

    I think, that you are not right. Write to me in PM.

  4. Sagul

    Prompt, where to me to learn more about it?

  5. Gular

    In my opinion it is not logical

Thanks! Your comment will appear after verification.
Add a comment

© 2020 Online - Advisor on specific issues.