Escape sequences in C# string

To escape curly brackets in a format string in C#, you can use double curly brackets "{{" and "}}" to represent a single curly bracket. For example:

string formatString = "{{ This is a {0} with curly brackets }}";
string resultString = string.Format(formatString, "test");
Console.WriteLine(resultString); // output: { This is a test with curly brackets }

To escape double quotes in a string, you can use the backslash "" character before the double quote. For example:

string str = "This is a \"test\" string.";
Console.WriteLine(str); // output: This is a "test" string.

To convert an Unicode string to an escaped ASCII string in C#, you can use the System.Text.RegularExpressions.Regex class to match and replace non-ASCII characters with their escaped ASCII representation. Here's an example:

string unicodeString = "Hello, ����!";
string escapedAsciiString = System.Text.RegularExpressions.Regex.Replace(unicodeString, @"[^\u0000-\u007F]", m => "\\u" + ((int)m.Value[0]).ToString("X4"));
Console.WriteLine(escapedAsciiString); // output: Hello, \u4E16\u754C!

In this example, the Regex.Replace method matches any non-ASCII character using the regular expression pattern [^\u0000-\u007F], which matches any character that falls outside of the ASCII range. The match is then replaced with the string "\\u" followed by the hexadecimal representation of the character using the ToString("X4") method.

C# escape sequences in strings: Escape sequences in C# start with a backslash \ followed by a character, indicating a special meaning.

How to use escape characters in C# string:

string stringWithEscape = "This is a string with escape sequences: \"Quotes\", \\Backslash, \tTab.";

C# newline escape sequence:

string multiLineString = "Line 1\nLine 2\nLine 3";
// Result:
// Line 1
// Line 2
// Line 3

Escape double quotes in C# string:

string stringWithQuotes = "This is a string with \"double quotes\".";

Tab character escape sequence in C#:

string tabbedString = "Column1\tColumn2\tColumn3";
// Result: Column1    Column2    Column3

C# escape backslash in string:

string stringWithBackslash = "This is a backslash: \\";

Carriage return escape sequence C#:

string stringWithCarriageReturn = "Line 1\rLine 2";
// Result: Line 2

Unicode escape sequence in C# string:

string unicodeString = "This is a smiley face: \u263A";
// Result: This is a smiley face: ☺