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Hello and welcome to this lecture on while loop while loops are basically statements or code that executes

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based on a certain condition.

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So as long as the condition is true the code will continue to execute the code will only stop when that

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condition becomes false.

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So we will illustrate in this lecture someone to create a new project.

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So I just go file new project and give it a Windows form on our call is loops.

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So I change the default name from Windows Forms to loops

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and click Okay.

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What I'm gonna do I'm just gonna add a button to this form here.

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So I'll go to view to view the tool box go to box and just drag it button in the

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OK so to see the code behind the form you can click on View

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you click on the form first then you click on view make sure the form is clicked on and then you select

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code and to show you the code behind the form.

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So let's go back to the form design and this song.

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Want a double click on the button so it creates is top of the of an event handler.

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Okay so we've got a stop here of a button click event handler.

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So in between these curly braces is will write the code to handle the Click event for this button.

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So we are going to write a code that we lost trade.

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The while loop so the statement in the call the code will continually execute it will.

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That's why it's called a loop.

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It will keep running that code as long as the condition is true so it will execute the code inside the

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block this block.

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This is a block.

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It will continue to execute that code as long as the condition is true.

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It will only stop when that condition becomes false.

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So we are going to write a code some code here that will be executed to respond to this click event

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handler.

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All right.

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So this is done by illustration of the while loop.

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So to begin we have to define a variable so I'm going to define a variable and it's going to be an integer.

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So we start with the type which is an integer and I'm going to call the variable count when I give it

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a value close to 1 right.

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So that's a variable that's a name.

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And that's the value.

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Okay so to set up a while loop you need to type in the word while

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which indicates it's a while loop you say while the count which is a variable here

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something while these count

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is less than or equal to for

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so I'd say while this count which is this variable is less than or equal to 4 I need you to execute

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this code.

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So the code I wanted to execute I need to specify the code inside curly braces.

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Just like you would do with an if statement.

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So inside this curly braces here is where I will define the code that will execute as long as this condition

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here is true.

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So I'm going want it to display a message so I'm going to use a message box.

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So typing message box and I'm going to attach a show method so it will show the message and inside the

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parentheses I need to specify the message so I'll say as long as that condition is true I'll see the

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value

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off high is

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news single quotes just quotes in space.

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Plus the name of the variable which is count

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OK.

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And so I am saying here that as long as this condition is true it is variable here is less than or equal

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to four split.

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Display this message.

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The value of my eye here is kind of like a counter is where the count stands from.

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So it says that the value of eye is plus this variable here count is plus 1.

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All right.

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And then what.

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And then I'll add the count

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equals to

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count plus 1.

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So what that means.

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This count.

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What I means each time the.

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You click on the button it will increase the Count to 1 2 2 2 3 to 4.

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Once as long as it count each time we click the button as long as the count is less than or equal to

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4.

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This code here will continue to run by the moment.

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It is greater than 4.

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The code will stop running.

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OK so let's let's test this out so I click on Start

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and wait for the code.

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So this is a button.

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So if I click the number I should increase does the value of eyes 1.

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That's it for sale.

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Kagan it goes and two three four.

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It will not exceed four.

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That is the code.

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Stop running.

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So the code stops when he gets to four.

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That's what a wild look does.

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It will continue to execute a block of code in this case.

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This is a block of code.

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It will continue to execute this as long as the condition set inside the WoW is met.

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So this is a condition I've set I've said as long as this variable count is less than or equal to four

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continue to execute this code.

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All right.

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Well that's basically how you implement a while.

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Thank you so much for watching.

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Take care.

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Bye for now.