Programming with Microsoft Visual Basic 2017
Programming with Microsoft Visual Basic 2017
8th Edition
ISBN: 9781337102124
Author: Diane Zak
Publisher: Cengage Learning
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Chapter 3, Problem 1MQ3

Explanation of Solution

TryParse method:

  • The method TryParse() is used to convert text to the numeric data type.
  • If the text cannot be converted to the appropriate data type, then the method assigns the value 0 to the corresponding variable.

Syntax:

DataType...

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Write a TryParse method that converts the contents of the txtAge.Text property to an integer, storing the result in the intAge variable.
Create an application with a method that accepts a string as an argument and returns the number of words it contains. For instance, if the argument is "Four score and seven years ago," the method should return the number 6. The application should let the user enter a string, and then it should pass the string to the method. The number of words in the string should be displayed.
Assume certain things to be true. points is the name of a variable that stores integer values, while textbox is the name of a textbox control. Implement the TryParse methods in an if-else statement that transforms the Text property of a pointsTextBox control to an int and stores the result in a points variable, as shown in the following example. If the conversion fails, an error message will be shown in a message box on the screen.

Chapter 3 Solutions

Programming with Microsoft Visual Basic 2017

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