c# - How to escape double quotes with string interpolation

C# - How to escape double quotes with string interpolation

When using string interpolation in C#, you might need to include double quotes within the interpolated string. To include double quotes in a string interpolated with $, you need to escape them properly.

Here's how you can do it:

Escaping Double Quotes in String Interpolation

  1. Using Double Quotes with Escaping: Use \" to escape double quotes within the interpolated string.

    var name = "Alice"; var message = $"Hello, \"{name}\"!"; Console.WriteLine(message);

    Output:

    Hello, "Alice"!

  2. Using Verbatim String Literals: If you need to include multiple double quotes or special characters, you can use the verbatim string literal (prefix with @) in conjunction with interpolation. For verbatim strings, use "" to represent a single double quote.

    var name = "Alice"; var message = $@"Hello, ""{name}""!"; Console.WriteLine(message);

    Output:

    Hello, "Alice"!

Explanation

  • Standard Interpolation with Escaping: In the standard interpolated string ($"..."), you use \" to escape double quotes within the string. This is useful for simpler cases where you only need a few quotes.

  • Verbatim String Literals with Interpolation: When using verbatim strings (@$"..."), double quotes are represented by doubling them (""). This approach is more convenient when you have complex strings or need to include multiple double quotes.

Examples

Here are a few examples to demonstrate both methods:

Example 1: Standard Interpolation

string name = "Bob"; string quote = $"He said, \"Hello, {name}!\""; Console.WriteLine(quote);

Output:

He said, "Hello, Bob!"

Example 2: Verbatim String Literal with Interpolation

string name = "Bob"; string quote = $@"He said, ""Hello, {name}"""; Console.WriteLine(quote);

Output:

He said, "Hello, Bob"

By using these techniques, you can effectively include double quotes in your interpolated strings without issues.

Examples

  1. "Escape double quotes in C# string interpolation"

    Description: Use double curly braces to escape double quotes within a string interpolation.

    Code:

    using System; class Program { static void Main() { string name = "John"; string message = $"He said, \"Hello, {name}!\""; Console.WriteLine(message); } }

    Explanation: Use \" to include double quotes within a string interpolated value.

  2. "Include double quotes in interpolated string with C# verbatim literal"

    Description: Use the @ symbol to create a verbatim string literal and escape double quotes by doubling them.

    Code:

    using System; class Program { static void Main() { string name = "John"; string message = $@"He said, ""Hello, {name}!"""; Console.WriteLine(message); } }

    Explanation: In a verbatim string, "" is used to include a double quote.

  3. "Escape double quotes in string interpolation with multiple lines in C#"

    Description: Use a verbatim interpolated string to handle multi-line strings and escape double quotes.

    Code:

    using System; class Program { static void Main() { string name = "John"; string message = $@" He said, ""Hello, {name}!"" How are you today?"; Console.WriteLine(message); } }

    Explanation: Verbatim interpolated strings ($@"...") handle multi-line text and escape double quotes with "".

  4. "Escape double quotes in string interpolation when including special characters"

    Description: Include special characters like newlines and tabs along with escaped double quotes in an interpolated string.

    Code:

    using System; class Program { static void Main() { string name = "John"; string message = $"He said,\n\"Hello, {name}!\"\nHow are you?"; Console.WriteLine(message); } }

    Explanation: Use \n for newlines and \" for double quotes within the interpolated string.

  5. "Escape double quotes in C# interpolated strings with complex expressions"

    Description: Handle complex expressions and ensure double quotes are properly escaped.

    Code:

    using System; class Program { static void Main() { int count = 5; string message = $"The number is: \"{count * 2}\""; Console.WriteLine(message); } }

    Explanation: Double quotes around interpolated expressions are escaped using \".

  6. "Escape double quotes in interpolated string when embedding variables"

    Description: Escape double quotes when embedding variables in a string interpolation.

    Code:

    using System; class Program { static void Main() { string item = "apple"; string message = $"The item is \"{item}\"."; Console.WriteLine(message); } }

    Explanation: Use \" to escape double quotes around the interpolated variable.

  7. "Handling double quotes in interpolated string with embedded expressions in C#"

    Description: Handle complex embedded expressions and double quotes in an interpolated string.

    Code:

    using System; class Program { static void Main() { string firstName = "John"; string lastName = "Doe"; string message = $"Name: \"{firstName} {lastName}\""; Console.WriteLine(message); } }

    Explanation: Double quotes around interpolated expressions are included with \".

  8. "Escape double quotes in interpolated strings with placeholders in C#"

    Description: Use placeholders and escape double quotes within an interpolated string.

    Code:

    using System; class Program { static void Main() { string name = "John"; string template = "Hello, {0}!"; string message = $"The message is \"{string.Format(template, name)}\""; Console.WriteLine(message); } }

    Explanation: Double quotes around the formatted string are escaped using \".

  9. "How to escape double quotes in interpolated strings with dynamic values in C#"

    Description: Handle dynamic values and escape double quotes in an interpolated string.

    Code:

    using System; class Program { static void Main() { dynamic value = 42; string message = $"The value is \"{value}\"."; Console.WriteLine(message); } }

    Explanation: Use \" to escape double quotes around dynamic values in the interpolated string.

  10. "Escape double quotes in string interpolation with C# string interpolation for JSON"

    Description: Properly escape double quotes when creating JSON strings with interpolation.

    Code:

    using System; class Program { static void Main() { string key = "name"; string value = "John Doe"; string json = $"{{\"{key}\": \"{value}\"}}"; Console.WriteLine(json); } }

    Explanation: Escapes double quotes to form valid JSON strings with interpolated values.

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