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.NET Framework  Namespace References  System     Array   Class    Boolean   Structure    Buffer   Class    Byte   Structure    Char   Structure    Console   Class    Convert   Class    DateTime   Structure    DayOfWeek   Enumeration    Decimal   Structure    Double   Structure    Enum   Class    Environment   Class    Exception   Class    ICloneable   Interface    Int16   Structure    Int32   Structure    Int64   Structure    Math   Class    Object   Class    OperatingSystem   Class    Random   Class    SByte   Structure    Single   Structure    String   Class    TimeSpan   Structure    UInt16   Structure    UInt32   Structure    UInt64   Structure    Version   Class   System.Collections  System.Globalization  System.IO  Articles and Tutorials  Overview of .NET  Delphi and .NET  Winform Applications  ASP .Net Applications  php Web Services  Framework Collections  Framework String Handling  Framework Files and Folders       System.String Class    Description The String class equates quite well with the StrUtils Run Time Library unit.   In .Net, strings are always sequences of Unicode characters - it is wrong to see them as byte arrays (Unicode characters require 2 bytes per character).   In .Net, strings are never updated (they are deemed immutable). Code that appears to update a string merely creates a new string instance that holds the result of the manipulation. Be wary of the performance impacts of this processing (use StringBuilder for optimal performance).   System.String is an oject in Delphi for .Net. When developing a .Net application, the primitive String also becomes an object - it is mapped to System.String.   Strings are deemed classes in .Net rather than structures because their size is variable (structures, such as DateTime, in .Net are a special case of class where their finite size allows them to be stored on the stack rather than in the heap, and hence more efficiently).  Syntax Constructor Create ( value : ^Char ; ); Constructor Create ( value : ^Char; startIndex : Integer; length : Integer ); Constructor Create ( c : Char; count : Length ); Constructor Create ( value : array of Char ; ); Constructor Create ( value : array of Char; startIndex : Integer; length : Integer ); Constructor Create ( value : ShortInt ; ); Constructor Create ( value : ShortInt; startIndex : Integer; length : Integer ); Constructor Create ( value : ShortInt; startIndex : Integer; length : Integer; enc : Encoding );  Methods Compare   Compares two specified String objects. CompareTo   Compares the current string with another Concat   Concatenates one or more instances of String, or the String objects Copy   Creates a new instance of String with the same value as a specified String. CopyTo   Copies part of a string into a section of a Char array EndsWith   Determines if a string ends with a specified string Equals   Determines whether two String objects have the same value. Format   Formats numbers, datetimes and enumerations into a string IndexOf   Finds the first index position of a string within a string IndexOfAny   Finds the first index of any of a set of characters within a string Insert   Inserts a string into another string, creating a new, longer string Join   Converts a string array into a string with a separator string between each LastIndexOf   Finds the last index position of a string within a string LastIndexOfAny   Finds the last index of any of a set of characters within a string PadLeft   Right aligns a string, padding to the left as appropriate PadRight   Left aligns a string, padding to the right as appropriate Remove   Removes a number of characters from a string Replace   Replaces all occurences of a string with another string Split   Parses a string into an array of substrings StartsWith   Determines if a string starts with a specified string SubString   Returns a section of a string ToCharArray   Creates a character array from a string ToLower   Converts a string to lower case ToUpper   Converts a string to upper case Trim   Trims specified characters from both ends of a string TrimEnd   Trims specified characters from the end of a string TrimStart   Trims specified characters from the start of a string  Fields Empty    String    Represents the empty string. This field is read-only.  Properties Chars    Char    Gets the character at a specified character position in this instance. Length    Int    Gets the number of characters in this instance.  Operators =   Determines whether two specified String objects have the same value. <>   Determines whether two specified String objects have different values.  Microsoft MSDN links   System System.string

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