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Hello and welcome.

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In this lecture we are going to continue from where we left off in part one.

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All right.

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So I'm just going to change some more of the property values so if click on the label here I'm going

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to remove the text value which is this one here.

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I don't want it to say anything at the moment but just get rid of that and that should be gone next

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and I want to do is go to the buttons tab

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and I want to change the text on that button.

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Just make that okay button.

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Change that too.

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OK.

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All right.

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So I'm good.

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The next time we want to do we want to try and understand how they can be a data type assignment mismatch.

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So to do that double click on the okay button double click.

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And that should open up the code behind the button

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if you don't get this pop up immediately click you make sure you click on this.

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Default is default dot SB X dot see us make sure that is clicked on also before you double click on

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the button.

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If it doesn't come up.

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So right.

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So this is the this is shown all our code.

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So because we've clicked on the button you can see the mouse the cursor is flashing there because that's

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where it's asking us to insert some code.

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All right.

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So what I'm going to do I'm going to try and it's OK.

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So let's start with a data type of integer.

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All right.

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I'm going to give it a value of just the letter I type in the name the variable and then I am going

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to introduce a data type mismatch what I'm gonna do for the value of i I'm going to enter a string value.

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So I'm going to say

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hello world

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okay.

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And post semicolon at the end.

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All right.

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You can see Vicious to those complaining because of the squiggly lines.

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So in knows that I've got the wrong data type inserted the red squiggly on the line here indicates a

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compilation era where the application will not run as opposed to a green squiggly line.

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So if you have a green squiggly line that is just a warning does doesn't stop the code from running.

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The reason we have the red squiggly lines is because we are trying to put a string which is an alphanumeric

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characters into a variable that is only able to hold an integer an integer basically is a whole no value.

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So the variable is saying I'm not having that.

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So that we can't accept string values in this variable figure is quite good.

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If you hover your mouse over that it will tell you what's gone wrong.

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And you know basically give you a clue as to what's going on.

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So what are we going to have to do we going to have to do an explicit conversion an implicit conversion

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basically is done with data with data of all values of similar data types when they have similar data

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type like a string on a string or an integer an integer that is known as implicit whereas the data types

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are different.

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For example an integer and the string that is explicit.

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So we need to do an explicit conversion.

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So to to convert this value into an integer value we are going to use a method a method called convert

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dot to int 32 method.

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Basically what this method does it will convert the specify string to an equivalent 32 bit signed integer.

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So this is all going gonna do where we've got the variable I want to set it to equals to look type in

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the world convert

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uppercase

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convert dot you notice it's the intelligence has given us an idea.

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This is what I want.

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So I'm gonna convert convert dot to 32.

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That's the method.

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And then in parentheses I'm going to includes the text.

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I want to convert.

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So if she can see this quickly red squiggly lines has disappeared because we've now used this convert

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dot to into 32 method to convert this text hello world into an integer value.

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So this value now is equivalent to a 32 bit signed integer so a 32 bit side integer is also equivalent

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to the number in the value or a zero.

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If the value is no.

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So I'm just going to go in to design you for a minute or just scroll down

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and in the design of your what I'm trying to achieve here this text box here the text box input it will

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store users the input as a string but what I'm trying to achieve here I want doors to be able to convert

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that string into an integer so we can performs some calculation on it the label control which is this

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one here.

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So the result as a string.

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So we will also want to convert the results of the into calculation back into a string.

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So we're going to see if we can achieve that in the next lecture.

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So that's it for this lecture.

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Thanks for watching.

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Bye for now.