Enum parsing from strings in C Sharp (C#) - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to parse the string "Red" into the Color enum.

C Sharp (C#)

Color color = (Color) Enum.Parse(typeof(Color), [1]);

Drag options to blanks, or click blank then click option'

A"Red"

BRed

Ccolor

Dtypeof(Color)

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the enum name without quotes causes a compile error.

Passing the enum type instead of the string name.

The Enum.Parse method requires the string name of the enum value, so it must be passed as a string literal like "Red".

2fill in blank

medium

Complete the code to safely parse the string "Blue" into the Color enum using TryParse.

C Sharp (C#)

bool success = Enum.TryParse<Color>([1], out Color color);

Drag options to blanks, or click blank then click option'

Acolor

Btypeof(Color)

C"Blue"

DBlue

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the enum variable instead of the string.

Passing the enum type instead of the string.

The Enum.TryParse method requires the string to parse, so you must pass the string literal "Blue".

3fill in blank

hard

Fix the error in parsing the string "Green" to the Color enum using Enum.Parse.

C Sharp (C#)

Color color = (Color) Enum.Parse(typeof(Color), [1], true);

Drag options to blanks, or click blank then click option'

A"Green"

B"green"

CGreen

Dgreen

Attempts:

3 left

💡 Hint

Common Mistakes

Passing unquoted strings causes compile errors.

Passing the enum name without quotes.

The string must be passed with quotes and match the enum name case-insensitively because of the true ignoreCase parameter. So "Green" is correct.

4fill in blank

hard

Fill both blanks to parse "Yellow" ignoring case and assign to variable.

C Sharp (C#)

Color color = (Color) Enum.Parse(typeof(Color), [1], [2]);

Drag options to blanks, or click blank then click option'

A"Yellow"

Bfalse

Ctrue

DYellow

Attempts:

3 left

💡 Hint

Common Mistakes

Not quoting the string.

Using false instead of true for ignoreCase.

The first blank needs the string "Yellow" and the second blank the boolean true to ignore case.

5fill in blank

hard

Fill all three blanks to parse string to enum, check success, and print result.

C Sharp (C#)

if (Enum.TryParse<Color>([1], out Color [2]))
{
    Console.WriteLine([3]);
}

Drag options to blanks, or click blank then click option'

A"Purple"

BparsedColor

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted strings.

Mismatching variable names between out parameter and print statement.

The string to parse is "Purple", the out variable is parsedColor, and we print parsedColor.