StringBuilder VB.NET WinRT Reference Documentation

StringBuilder

Current Version: 9.5.0.75

A simple class for building strings. (Represents a mutable string of characters.)

Note: This class was introduced in Chilkat v9.5.0.58.

Object Creation

Dim obj As New Chilkat.StringBuilder()

Properties

IntValue
IntValue As Integer
Introduced in version 9.5.0.58

Returns the content of the string converted to an integer.

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LastMethodSuccess
LastMethodSuccess As Boolean

Indicate whether the last method call succeeded or failed. A value of True indicates success, a value of False indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = True and failure = False.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to True. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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Length
Length As Integer (ReadOnly)
Introduced in version 9.5.0.58

The number of characters of the string contained within this instance.

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Methods

Append
Function Append(ByVal value As String) As Boolean
Introduced in version 9.5.0.58

Appends a copy of the specified string to this instance.

Returns True for success, False for failure.

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AppendBd
Function AppendBd(ByVal binData As BinData, ByVal charset As String, ByVal offset As Integer, ByVal numBytes As Integer) As Boolean
Introduced in version 9.5.0.64

Appends the contents of binData. The charset specifies the character encoding of the bytes contained in binData. The charset can be any of the supported encodings listed at Chilkat Supported Character Encodings. To append the entire contents of binData, set offset and numBytes equal to zero. To append a range of binData, set the offset and numBytes to specify the range.

Returns True for success, False for failure.

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AppendEncoded
Function AppendEncoded(ByVal binaryData As Byte(), ByVal encoding As String) As Boolean
Introduced in version 9.5.0.58

Appends binary data using the encoding specified by encoding, such as "base64", "hex", etc.

Returns True for success, False for failure.

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AppendInt
Function AppendInt(ByVal value As Integer) As Boolean
Introduced in version 9.5.0.58

Appends the string representation of a specified 32-bit signed integer to this instance.

Returns True for success, False for failure.

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AppendInt64
Function AppendInt64(ByVal value As Int64) As Boolean
Introduced in version 9.5.0.58

Appends the string representation of a specified 64-bit signed integer to this instance.

Returns True for success, False for failure.

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AppendLine
Function AppendLine(ByVal value As String, ByVal crlf As Boolean) As Boolean
Introduced in version 9.5.0.65

Appends the value followed by a CRLF or LF to the end of the curent StringBuilder object. If crlf is True, then a CRLF line ending is used. Otherwise a LF line ending is used.

Returns True for success, False for failure.

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AppendSb
Function AppendSb(ByVal sb As StringBuilder) As Boolean
Introduced in version 9.5.0.62

Appends the contents of another StringBuilder to this instance.

Returns True for success, False for failure.

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Clear
Sub Clear()
Introduced in version 9.5.0.58

Removes all characters from the current StringBuilder instance.

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Contains
Function Contains(ByVal str As String, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.58

Returns True if the str is contained within this object. For case sensitive matching, set caseSensitive equal to True. For case-insensitive, set caseSensitive equal to False.

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ContainsWord
Function ContainsWord(ByVal word As String, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.69

Returns True if the word is contained within this object, but only if it is a whole word. This method is limited to finding whole words in strings that only contains characters in the Latin1 charset (i.e. iso-8859-1 or Windows-1252). A whole word can only contain alphanumeric chars where the alpha chars are restricted to those of the Latin1 alpha chars. (The underscore character is also considered part of a word.)

For case sensitive matching, set caseSensitive equal to True. For case-insensitive, set caseSensitive equal to False.

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ContentsEqual
Function ContentsEqual(ByVal str As String, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.62

Returns True if the contents of this object equals the str. Returns False if unequal. For case insensitive equality, set caseSensitive equal to False.

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ContentsEqualSb
Function ContentsEqualSb(ByVal sb As StringBuilder, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.62

Returns True if the contents of this object equals the sb. Returns False if unequal. For case insensitive equality, set caseSensitive equal to False.

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Decode
Function Decode(ByVal encoding As String, ByVal charset As String) As Boolean
Introduced in version 9.5.0.62

Decodes and replaces the contents with the decoded string. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Note: This method can only be called if the encoded content decodes to a string. The charset indicates the charset to be used in intepreting the decoded bytes. For example, the charset can be "utf-8", "utf-16", "iso-8859-1", "shift_JIS", etc.

Returns True for success, False for failure.

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Encode
Function Encode(ByVal encoding As String, ByVal charset As String) As Boolean
Introduced in version 9.5.0.62

Encodes to base64, hex, quoted-printable, URL encoding, etc. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Returns True for success, False for failure.

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EndsWith
Function EndsWith(ByVal substr As String, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.62

Returns True if the string ends with substr. Otherwise returns False. The comparison is case sensitive if caseSensitive is True, and case insensitive if caseSensitive is False.

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EntityDecode
Function EntityDecode() As Boolean
Introduced in version 9.5.0.62

Decodes HTML entities. See HTML entities for more information about HTML entities.

Returns True for success, False for failure.

More Information and Examples
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GetAfterBetween
Function GetAfterBetween(ByVal searchAfter As String, ByVal beginMark As String, ByVal endMark As String) As String
Introduced in version 9.5.0.62

Begin searching after the 1st occurrence of searchAfter is found, and then return the substring found between the next occurrence of beginMark and the next occurrence of endMark.

Returns Nothing on failure

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GetAsString
Function GetAsString() As String
Introduced in version 9.5.0.58

Returns the contents as a string.

Returns Nothing on failure

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GetBetween
Function GetBetween(ByVal beginMark As String, ByVal endMark As String) As String
Introduced in version 9.5.0.62

Returns the substring found between the 1st occurrence of beginMark and the next occurrence of endMark.

Returns Nothing on failure

More Information and Examples
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GetDecoded
Function GetDecoded(ByVal encoding As String) As Byte()
Introduced in version 9.5.0.62

Decodes and returns the decoded bytes. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Returns an empty byte array on failure

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GetEncoded
Function GetEncoded(ByVal encoding As String, ByVal charset As String) As String
Introduced in version 9.5.0.62

Returns the string contents encoded in an encoding such as base64, hex, quoted-printable, or URL-encoding. The encoding can be set to any of the following strings: "base64", "hex", "quoted-printable" (or "qp"), "url", "base32", "Q", "B", "url_rc1738", "url_rfc2396", "url_rfc3986", "url_oauth", "uu", "modBase64", or "html" (for HTML entity encoding). The full up-to-date list of supported binary encodings is available at the link entitled "Supported Binary Encodings" below.

Note: The Encode method modifies the content of this object. The GetEncoded method leaves this object's content unmodified.

Returns Nothing on failure

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GetNth
Function GetNth(ByVal index As Integer, ByVal delimiterChar As String, ByVal exceptDoubleQuoted As Boolean, ByVal exceptEscaped As Boolean) As String
Introduced in version 9.5.0.62

Returns the Nth substring in string that is a list delimted by delimiterChar. The first substring is at index 0. If exceptDoubleQuoted is True, then the delimiter char found between double quotes is not treated as a delimiter. If exceptEscaped is True, then an escaped (with a backslash) delimiter char is not treated as a delimiter.

Returns Nothing on failure

More Information and Examples
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LastNLines
Function LastNLines(ByVal numLines As Integer, ByVal bCrlf As Boolean) As String
Introduced in version 9.5.0.62

Returns the last N lines of the text. If fewer than numLines lines exists, then all of the text is returned. If bCrlf is True, then the line endings of the returned string are converted to CRLF, otherwise the line endings are converted to LF-only.

Returns Nothing on failure

More Information and Examples
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LoadFile
Function LoadFile(ByVal path As String, ByVal charset As String) As Boolean
Introduced in version 9.5.0.62

Loads the contents of a file.

Returns True for success, False for failure.

More Information and Examples
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Prepend
Function Prepend(ByVal value As String) As Boolean
Introduced in version 9.5.0.61

Prepends a copy of the specified string to this instance.

Returns True for success, False for failure.

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PunyDecode
Function PunyDecode() As Boolean
Introduced in version 9.5.0.71

In-place decodes the string from punycode.

Returns True for success, False for failure.

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PunyEncode
Function PunyEncode() As Boolean
Introduced in version 9.5.0.71

In-place encodes the string to punycode.

Returns True for success, False for failure.

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Replace
Function Replace(ByVal value As String, ByVal replacement As String) As Integer
Introduced in version 9.5.0.58

Replaces all occurrences of a specified string in this instance with another specified string. Returns the number of replacements.

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ReplaceAfterFinal
Function ReplaceAfterFinal(ByVal marker As String, ByVal replacement As String) As Boolean
Introduced in version 9.5.0.73

Replaces the content found after the final occurrence of marker with replacement.

Returns True for success, False for failure.

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ReplaceAllBetween
Function ReplaceAllBetween(ByVal beginMark As String, ByVal endMark As String, ByVal replacement As String, ByVal replaceMarks As Boolean) As Boolean
Introduced in version 9.5.0.64

Replaces the first occurrence of ALL the content found between beginMark and endMark with replacement. The beginMark and endMark are included in what is replaced if replaceMarks is True.

Returns True for success, False for failure.

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ReplaceBetween
Function ReplaceBetween(ByVal beginMark As String, ByVal endMark As String, ByVal value As String, ByVal replacement As String) As Integer
Introduced in version 9.5.0.62

Replaces all occurrences of value with replacement, but only where value is found between beginMark and endMark. Returns the number of replacements made.

More Information and Examples
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ReplaceI
Function ReplaceI(ByVal value As String, ByVal replacement As Integer) As Integer
Introduced in version 9.5.0.67

Replaces all occurrences of value with the decimal integer replacement. Returns the number of replacements.

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ReplaceWord
Function ReplaceWord(ByVal value As String, ByVal replacement As String) As Integer
Introduced in version 9.5.0.62

Replaces all word occurrences of a specified string in this instance with another specified string. Returns the number of replacements made.

Important: This method is limited to replacing whole words in strings that only contains characters in the Latin1 charset (i.e. iso-8859-1 or Windows-1252). A whole word can only contain alphanumeric chars where the alpha chars are restricted to those of the Latin1 alpha chars. (The underscore character is also considered part of a word.)

More Information and Examples
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SecureClear
Sub SecureClear()
Introduced in version 9.5.0.67

Removes all characters from the current StringBuilder instance, and write zero bytes to the allocated memory before deallocating.

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SetNth
Function SetNth(ByVal index As Integer, ByVal value As String, ByVal delimiterChar As String, ByVal exceptDoubleQuoted As Boolean, ByVal exceptEscaped As Boolean) As Boolean
Introduced in version 9.5.0.62

Sets the Nth substring in string in a list delimted by delimiterChar. The first substring is at index 0. If exceptDoubleQuoted is True, then the delimiter char found between double quotes is not treated as a delimiter. If exceptEscaped is True, then an escaped (with a backslash) delimiter char is not treated as a delimiter.

Returns True for success, False for failure.

More Information and Examples
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SetString
Function SetString(ByVal value As String) As Boolean
Introduced in version 9.5.0.61

Sets this instance to a copy of the specified string.

Returns True for success, False for failure.

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StartsWith
Function StartsWith(ByVal substr As String, ByVal caseSensitive As Boolean) As Boolean
Introduced in version 9.5.0.62

Returns True if the string starts with substr. Otherwise returns False. The comparison is case sensitive if caseSensitive is True, and case insensitive if caseSensitive is False.

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ToCRLF
Function ToCRLF() As Boolean
Introduced in version 9.5.0.62

Converts line endings to CRLF (Windows) format.

Returns True for success, False for failure.

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ToLF
Function ToLF() As Boolean
Introduced in version 9.5.0.62

Converts line endings to LF-only (UNIX) format.

Returns True for success, False for failure.

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ToLowercase
Function ToLowercase() As Boolean
Introduced in version 9.5.0.62

Converts the contents to lowercase.

Returns True for success, False for failure.

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ToUppercase
Function ToUppercase() As Boolean
Introduced in version 9.5.0.62

Converts the contents to uppercase.

Returns True for success, False for failure.

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Trim
Function Trim() As Boolean
Introduced in version 9.5.0.62

Trims whitespace from both ends of the string.

Returns True for success, False for failure.

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TrimInsideSpaces
Function TrimInsideSpaces() As Boolean
Introduced in version 9.5.0.62

Replaces all tabs, CR's, and LF's, with SPACE chars, and removes extra SPACE's so there are no occurances of more than one SPACE char in a row.

Returns True for success, False for failure.

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WriteFile
Function WriteFile(ByVal path As String, ByVal charset As String, ByVal emitBom As Boolean) As Boolean
Introduced in version 9.5.0.62

Writes the contents to a file. If emitBom is True, then the BOM (also known as a preamble), is emitted for charsets that define a BOM (such as utf-8, utf-16, utf-32, etc.)

Returns True for success, False for failure.

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WriteFileIfModified
Function WriteFileIfModified(ByVal path As String, ByVal charset As String, ByVal emitBom As Boolean) As Boolean
Introduced in version 9.5.0.73

Writes the contents to a file, but only if it is a new file or if the contents are different than the existing file. If emitBom is True, then the BOM (also known as a preamble), is emitted for charsets that define a BOM (such as utf-8, utf-16, utf-32, etc.)

Returns True for success, False for failure.

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