string is a class or data type?

Hello @Ajay String is a class which is alias of system.String

if you have a confusion about that then try this write String in application and now right click on it

and select "GO TO Defination" and you will find your answer

// Summary:
// Represents text as a series of Unicode characters.
[Serializable]
[ComVisible(true)]
public sealed class String : IComparable, ICloneable, IConvertible, IComparable, IEnumerable, IEnumerable, IEquatable
{
// Summary:
// Represents the empty string. This field is read-only.
public static readonly string Empty;

// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified pointer to an array of Unicode characters.
//
// Parameters:
// value:
// A pointer to a null-terminated array of Unicode characters.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// The current process does not have read access to all the addressed characters.
//
// System.ArgumentNullException:
// value is null.
//
// System.ArgumentException:
// value specifies an array that contains an invalid Unicode character, or value
// specifies an address less than 64000.
[CLSCompliant(false)]
[SecurityCritical]
public String(char* value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by an array of Unicode characters.
//
// Parameters:
// value:
// An array of Unicode characters.
[SecuritySafeCritical]
public String(char[] value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a pointer to an array of 8-bit signed integers.
//
// Parameters:
// value:
// A pointer to a null-terminated array of 8-bit signed integers.
//
// Exceptions:
// System.ArgumentNullException:
// value is null.
//
// System.ArgumentException:
// A new instance of System.String could not be initialized using value, assuming
// value is encoded in ANSI.
//
// System.ArgumentOutOfRangeException:
// The length of the new string to initialize, which is determined by the null
// termination character of value, is too large to allocate.
//
// System.AccessViolationException:
// value specifies an invalid address.
[CLSCompliant(false)]
[SecurityCritical]
public String(sbyte* value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified Unicode character repeated a specified number of times.
//
// Parameters:
// c:
// A Unicode character.
//
// count:
// The number of times c occurs.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// count is less than zero.
[SecuritySafeCritical]
public String(char c, int count);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified pointer to an array of Unicode characters, a starting character
// position within that array, and a length.
//
// Parameters:
// value:
// A pointer to an array of Unicode characters.
//
// startIndex:
// The starting position within value.
//
// length:
// The number of characters within value to use.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// startIndex or length is less than zero, value + startIndex cause a pointer
// overflow, or the current process does not have read access to all the addressed
// characters.

Which show that String is a class

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Munesh Sharma11y ago
http://www.tutorialspoint.com/csharp/csharp_strings.htm

http://www.tutorialspoint.com/csharp/csharp_data_types.htm
0
Nanhe Siddique11y ago
read this article

http://stackoverflow.com/questions/5164005/what-is-the-difference-between-a-class-and-a-datatype

http://www.blackwasp.co.uk/CSharpStringDataType.aspx

it may help you
0
Pankaj Kumar Choudhary11y ago
Hello @Ajay String is a class which is alias of system.String

if you have a confusion about that then try this write String in application and now right click on it
and select "GO TO Defination" and you will find your answer

// Summary:
// Represents text as a series of Unicode characters.
[Serializable]
[ComVisible(true)]
public sealed class String : IComparable, ICloneable, IConvertible, IComparable, IEnumerable, IEnumerable, IEquatable
{
// Summary:
// Represents the empty string. This field is read-only.
public static readonly string Empty;

// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified pointer to an array of Unicode characters.
//
// Parameters:
// value:
// A pointer to a null-terminated array of Unicode characters.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// The current process does not have read access to all the addressed characters.
//
// System.ArgumentNullException:
// value is null.
//
// System.ArgumentException:
// value specifies an array that contains an invalid Unicode character, or value
// specifies an address less than 64000.
[CLSCompliant(false)]
[SecurityCritical]
public String(char* value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by an array of Unicode characters.
//
// Parameters:
// value:
// An array of Unicode characters.
[SecuritySafeCritical]
public String(char[] value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a pointer to an array of 8-bit signed integers.
//
// Parameters:
// value:
// A pointer to a null-terminated array of 8-bit signed integers.
//
// Exceptions:
// System.ArgumentNullException:
// value is null.
//
// System.ArgumentException:
// A new instance of System.String could not be initialized using value, assuming
// value is encoded in ANSI.
//
// System.ArgumentOutOfRangeException:
// The length of the new string to initialize, which is determined by the null
// termination character of value, is too large to allocate.
//
// System.AccessViolationException:
// value specifies an invalid address.
[CLSCompliant(false)]
[SecurityCritical]
public String(sbyte* value);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified Unicode character repeated a specified number of times.
//
// Parameters:
// c:
// A Unicode character.
//
// count:
// The number of times c occurs.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// count is less than zero.
[SecuritySafeCritical]
public String(char c, int count);
//
// Summary:
// Initializes a new instance of the System.String class to the value indicated
// by a specified pointer to an array of Unicode characters, a starting character
// position within that array, and a length.
//
// Parameters:
// value:
// A pointer to an array of Unicode characters.
//
// startIndex:
// The starting position within value.
//
// length:
// The number of characters within value to use.
//
// Exceptions:
// System.ArgumentOutOfRangeException:
// startIndex or length is less than zero, value + startIndex cause a pointer
// overflow, or the current process does not have read access to all the addressed
// characters.

Which show that String is a class
0
Gopi Chand11y ago
Hello Ajay,

In c# language, there are three varieties of data types:
Value types
Reference types
Pointer types
So string is a data type that comes under reference type that allows you to assign any string value to a variable. The string type is an alias (another name) for the System.string class.
So string is also a class. For more details, follow the link below:

c# Data types
c# String class

Thank you.
0