TryParse Method:

The TryParse method helps to avoid the exception when the user enters invalid inputs.

This method helps to identify a string value which can be converted to specific data type before it is converted to that data type.

There are so many TryParse methods in .NET. Some of the methods are given below:

int.TryParse method is used to convert the string into integer data type.

double.TryParse method is used to convert the string into double data type.

decimal.TryParse method is used to convert the string into decimal data type.

The general format for TryParse method is given below:

datatype.TryParse(string, out targetVariable)

Where,

“datatype” indicates the data type such as “int”, “double”, and “decimal”.

“string” indicates the string which need to convert.

“targetVariable” indicates the name of data type variable...

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Chapter 4.7, Problem 4.24CP

Chapter 4.9, Problem 4.26CP

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Chapter 4 Solutions

EBK STARTING OUT WITH VISUAL C#

Ch. 4.1 - What is a control structure?Ch. 4.1 - What is a decision structure?Ch. 4.1 - Prob. 4.3CP Ch. 4.1 - Prob. 4.4CP Ch. 4.1 - What types of relationships between numeric values...Ch. 4.1 - Write an if statement that determines whether the...Ch. 4.1 - Write an if statement that determines whether the...Ch. 4.2 - Prob. 4.8CP Ch. 4.2 - In an if-else statement, under what circumstances...Ch. 4.2 - Write an if-else statement that works like this:...

Ch. 4.3 - Convert the following set of nested if-else...Ch. 4.4 - Prob. 4.12CP Ch. 4.4 - Prob. 4.13CP Ch. 4.4 - Assume the variables a = 2, b = 4, and c = 6....Ch. 4.4 - Explain how short-circuit evaluation works with...Ch. 4.4 - Write an if statement that displays the message...Ch. 4.4 - Write an if statement that displays the message...Ch. 4.5 - Prob. 4.18CP Ch. 4.5 - Prob. 4.19CP Ch. 4.6 - If the following code were part of a complete...Ch. 4.6 - If the following code were part of a complete...Ch. 4.7 - Prob. 4.22CP Ch. 4.7 - If a TryParse method successfully converts the...Ch. 4.7 - Prob. 4.24CP Ch. 4.7 - Prob. 4.25CP Ch. 4.9 - Prob. 4.26CP Ch. 4.9 - If several CheckBox controls have been created in...Ch. 4.9 - Prob. 4.28CP Ch. 4.10 - Convert the following if-else-if code to a switch...Ch. 4.11 - Prob. 4.30CP Ch. 4.11 - Prob. 4.31CP Ch. 4.11 - Prob. 4.32CP Ch. 4 - A __________ structure executes a set of...Ch. 4 - A __________ structure provides one alternative...Ch. 4 - A(n) __________ expression has a value of either...Ch. 4 - The symbols , , and == are all __________...Ch. 4 - A __________ structure tests a condition and then...Ch. 4 - You use a(n) __________ statement to write a...Ch. 4 - You use a(n) __________ statement to write a dual...Ch. 4 - A ____________ decision structure is written...Ch. 4 - , ||, and ! are __________ operators. a....Ch. 4 - A compound Boolean expression created with the...Ch. 4 - A compound Boolean expression created with the...Ch. 4 - The __________ operator takes a Boolean expression...Ch. 4 - A __________ is a Boolean variable that signals...Ch. 4 - Prob. 14MC Ch. 4 - Prob. 15MC Ch. 4 - Prob. 16MC Ch. 4 - The __________ section of a switch statement is...Ch. 4 - A ListBoxs index numbering starts at __________....Ch. 4 - You can use the __________ property to determine...Ch. 4 - The __________ property holds the item that is...Ch. 4 - Prob. 1TF Ch. 4 - A single-alternative decision structure tests a...Ch. 4 - The if-else statement is a dual-alternative...Ch. 4 - A decision structure can be nested inside another...Ch. 4 - A compound Boolean expression created with the ...Ch. 4 - Prob. 6TF Ch. 4 - Multiple CheckBox controls in the same GroupBox...Ch. 4 - The test expression in a switch statement can be a...Ch. 4 - If an item is not selected in a ListBox, the...Ch. 4 - Prob. 10TF Ch. 4 - What is meant by the term conditionally executed?Ch. 4 - You need to test a condition and then execute one...Ch. 4 - Briefly describe how the operator works.Ch. 4 - Briefly describe how the || operator works.Ch. 4 - Prob. 5SA Ch. 4 - What is a flag and how does it work?Ch. 4 - What are the two arguments that you pass to a...Ch. 4 - How do you determine in code whether a RadioButton...Ch. 4 - Prob. 9SA Ch. 4 - Prob. 10SA Ch. 4 - Write an if statement that assigns 20 to the...Ch. 4 - Write an if statement that assigns 0 to the...Ch. 4 - Write an if-else statement that assigns 0 to the...Ch. 4 - Write nested decision structures that perform the...Ch. 4 - Write an if-else statement that displays Speed is...Ch. 4 - Write an if-else statement that determines whether...Ch. 4 - Prob. 7AW Ch. 4 - Rewrite the following if-else-if statement as a...Ch. 4 - Prob. 9AW Ch. 4 - Roman Numeral Converter Create an application that...Ch. 4 - Mass and Weight Scientists measure an objects mass...Ch. 4 - Magic Dates The date June 10, 1960, is special...Ch. 4 - Color Mixer The colors red, blue, and yellow are...Ch. 4 - Prob. 5PP Ch. 4 - Book Club Points Serendipity Booksellers has a...Ch. 4 - Software Sales A software company sells a package...Ch. 4 - Body Mass Index Program Enhancement In Programming...Ch. 4 - Change for a Dollar Game Create a change-counting...Ch. 4 - Fat Percentage Calculator One gram of fat has 9...Ch. 4 - Time Calculator Create an application that lets...Ch. 4 - Workshop Selector The following table shows a...

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Solution Summary: The author explains the TryParse method, which helps to avoid the exception when the user enters invalid inputs.

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Chapter 4 Solutions