Class StringExtensionMethods

Namespace

DougWare.StringExtensionMethods

Assembly

DougWare.StringExtensionMethods.dll

This class provides extension methods for strings: GetInnerText and GetInnerTextList. These methods are useful for parsing text to extract substrings or lists of substrings between any two string delimiters. GetInnerTest returns the first substring between the preamble and postscript. GetInnerTestList returns a list of substrings between the preamble and postscript, e.g. "<p>" and "</p>" to get paragraph text as a list from an html fragment.

public static class StringExtensionMethods

Inheritance

object

StringExtensionMethods

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

GetInnerText(string, string, string)

Retrieves a substring from this instance. The substring starts at a specified character position of a preamble and ends at a specified character position of a postscript.

public static string GetInnerText(this string input, string preamble, string postscript)

Parameters

input string

The input string

preamble string

The start substring

postscript string

The end substring

Returns

string

The substring between the preamble and postscript, or empty string if they are not found.

Examples

string input = "preambleHello, World!postscript";
string result = input.GetInnerText("preamble", "postscript"); // Returns "Hello, World!"

Exceptions

ArgumentNullException

Thrown when input, preamble or postscript is null or empty

GetInnerText(string, string, string, bool)

Retrieves a substring from this instance with case sensitive or insensitive option. The substring starts at a specified character position of a preamble and ends at a specified character position of a postscript.

public static string GetInnerText(this string input, string preamble, string postscript, bool ignoreCase)

Parameters

input string

The input string

preamble string

The start substring

postscript string

The end substring

ignoreCase bool

Boolean flag to indicate if the search should be case insensitive

Returns

string

The substring between the preamble and postscript, or empty string if they are not found.

Examples

string input = "PREAMBLEHello, World!POSTSCRIPT";
string result = input.GetInnerText("preamble", "postscript", true); // Returns "Hello, World!"

Exceptions

ArgumentNullException

Thrown when input, preamble or postscript is null or empty

GetInnerTextList(string, string, string)

Retrieves a list of substrings from this instance. The substrings start at a specified character position of a preamble and end at a specified character position of a postscript.

public static List<string> GetInnerTextList(this string input, string preamble, string postscript)

Parameters

input string

The input string

preamble string

The start substring

postscript string

The end substring

Returns

List<string>

A list of substrings between the preamble and postscript

Examples

string input = "preambleHello, World!postscript preambleHello Again!postscript";
List<string> result = input.GetInnerTextList("preamble", "postscript"); // Returns ["Hello, World!", "Hello Again!"]

Exceptions

ArgumentNullException

Thrown when input, preamble or postscript is null or empty

GetInnerTextList(string, string, string, bool)

Retrieves a list of substrings from this instance with case sensitive or insensitive option. The substrings start at a specified character position of a preamble and end at a specified character position of a postscript.

public static List<string> GetInnerTextList(this string input, string preamble, string postscript, bool ignoreCase)

Parameters

input string

The input string

preamble string

The start substring

postscript string

The end substring

ignoreCase bool

Boolean flag to indicate if the search should be case insensitive

Returns

List<string>

A list of substrings between the preamble and postscript

Examples

string input = "PREAMBLEHello, World!POSTSCRIPT PREAMBLEHello Again!POSTSCRIPT";
List<string> result = input.GetInnerTextList("preamble", "postscript", true); // Returns ["Hello, World!", "Hello Again!"]

Exceptions

ArgumentNullException

Thrown when input, preamble or postscript is null or empty

ToByteArrayUtf8(string)

Converts a string into a byte array using UTF-8 encoding.

public static byte[] ToByteArrayUtf8(this string input)

Parameters

input string

The input string

Returns

byte[]

The byte array representation of the input string

Examples

string input = "Hello, World!";
byte[] result = input.ToByteArrayUtf8(); // Returns the byte array of the string

Exceptions

ArgumentNullException

Thrown when input is null or empty