| Compare(Compare) | public | Compare 2 strings | 
| CompareOrdinal(CompareOrdinal) | public | Compare 2 strings byte for byte | 
| CompareText(TStringHelper) | public | Compare 2 strings case insensitively. | 
| CompareTo(TStringHelper) | public | Compare string to another | 
| Contains(TStringHelper) | public | Check is the string contains another | 
| Copy(TStringHelper) | public | Return a unique copy of a string | 
| CopyTo(TStringHelper) | public | Copy part of the string to an array of characters | 
| CountChar(TStringHelper) | public | Count the occurrences of a character | 
| Create(Create) | public | Create a new string | 
| DeQuotedString(DeQuotedString) | public | Return a dequoted version of the string | 
| EndsText(TStringHelper) | public | Check if one string is the ending of another. | 
| EndsWith(EndsWith) | public | Check if the string is ended by another. | 
| Equals(Equals) | public | Check if 2 strings are equal | 
| Format(Format) | public | Format a string using provided arguments. | 
| GetHashCode(TStringHelper) | public | Get a hash code for the string | 
| IndexOf(IndexOf) | public | Find the position (index) of a string or character | 
| IndexOfAny(IndexOfAny) | public | Find the position (index) of any string or character in a list. | 
| IndexOfAnyUnquoted(IndexOfAnyUnquoted) | public | Find the position (index) of any string or character in a list. | 
| IndexOfUnQuoted(TStringHelper) | public | Index of string, skipping quoted parts. | 
| Insert(TStringHelper) | public | Insert a string at a given position | 
| IsDelimiter(TStringHelper) | public | Check whether a character at a given position is a delimiter | 
| IsEmpty(TStringHelper) | public | Check whether the string is empty. | 
| IsNullOrEmpty(TStringHelper) | public | Check if a string is empty | 
| IsNullOrWhiteSpace(TStringHelper) | public | Check if a string is empty or contains only whitespace characters. | 
| Join(Join) | public | Join a series of strings, separated using a given separator | 
| LastDelimiter(TStringHelper) | public | Return the last position of one of a series of delimiters | 
| LastIndexOf(LastIndexOf) | public | Find the last position (index) of a string or character | 
| LastIndexOfAny(LastIndexOfAny) | public | Find the last position (index) of any string or character in a list. | 
| LowerCase(TStringHelper) | public | Return the lowercase version of a string. | 
| PadLeft(PadLeft) | public | Pad the string on the left with an indicated character | 
| PadRight(PadRight) | public | Pad the string on the right with an indicated character | 
| Parse(Parse) | public | Return a string representation of the argument | 
| QuotedString(QuotedString) | public | Return a quoted version of the string | 
| Remove(Remove) | public | Remove a number of characters from the string | 
| Replace(Replace) | public | Replace occurrences of one string with another. | 
| Split(Split) | public | Split a string in a number of parts | 
| StartsWith(StartsWith) | public | Check if one string starts with another | 
| Substring(Substring) | public | Return a part of the string | 
| ToBoolean(ToBoolean) | public | Convert string to boolean | 
| ToCharArray(ToCharArray) | public | Return the string as an array of characters. | 
| ToDouble(ToDouble) | public | Convert string to double-sized floating point value | 
| ToExtended(ToExtended) | public | Convert string to extended-sized floating point value | 
| ToInt64(ToInt64) | public | Convert string to 64-bit signed integer | 
| ToInteger(ToInteger) | public | Convert string to 32-bit signed integer | 
| ToLower(TStringHelper) | public | Convert to lowercase | 
| ToLowerInvariant(TStringHelper) | public | Convert to lowercase | 
| ToSingle(ToSingle) | public | Convert string to single-sized floating point value | 
| ToUpper(TStringHelper) | public | Convert to uppercase. | 
| ToUpperInvariant(TStringHelper) | public | Convert to uppercase | 
| Trim(Trim) | public | Strips a set of trim characters from the beginning and end of the string. | 
| TrimEnd(TStringHelper) | public | Alias for TrimRight | 
| TrimLeft(TrimLeft) | public | Strips a set of trim characters from the beginning of the string. | 
| TrimRight(TrimRight) | public | Strips a set of trim characters from the end of the string. | 
| TrimStart(TStringHelper) | public | Alias for TrimLeft | 
| UpperCase(TStringHelper) | public | Return uppercase version of a string |