C# Programming videos | C# Part 5 - Variables and Data Types

Posted by Andrew Gould on 31 October 2014

This part of the Basic Programming in Visual C# series explains how to use variables - an integral part of any programming language. You'll learn how to declare a variable and choose its data type, how to assign values to and read from a variable and how to initialise a variable. You'll learn about working with different data types such as strings, numbers and dates and understand the importance of type-casting and converting data types.

You can download any files that you need for this video from this blog.

You can increase the size of the video:

Full screen mode for YouTube

You can view the video in full screen mode as shown on the left, using the icon at the bottom right of the frame.

You can also increase the quality of the video:

Changing resolution

You can improve the resolution of the video using another icon at the bottom right of the frame. This will slow down the connection speed, but increase the display and sound quality. This icon only becomes visible when you start playing the video.

Finally, if nothing happens when you play the video, check that you're not using IE in compatibility view.

This page has 1 thread Add post
24 Aug 20 at 14:12

I noticed if the user enters a max age that is smaller than the min age, the message box returns a meaningless answer.

 

A) How can the code be amended to correct this?

B) Probably better if there's some data validation to prevent users entering a max age < min age.

 

 

25 Aug 20 at 07:04

Hi Duggie,

You could use an If statement to deal with this situation.  If statements are covered in the next video which you can see here https://www.wiseowl.co.uk/c-sharp/videos/c-sharp-basics/if-statements/

I hope that helps!

25 Aug 20 at 20:32

Thanks