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String Constructor (Char*, Int32, Int32)

Initializes a new instance of the 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.

This API is not CLS-compliant. 

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[CLSCompliantAttribute(false)]
public String(
	char* value,
	int startIndex,
	int length
)

Parameters

value
Type: System.Char*

A pointer to an array of Unicode characters.

startIndex
Type: System.Int32

The starting position within value.

length
Type: System.Int32

The number of characters within value to use.

ExceptionCondition
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.

ArgumentNullException

value is null.

ArgumentException

value specifies an array that contains an invalid Unicode character, or value + startIndex specifies an address less than 64000.

If length is zero, an Empty instance is initialized.

This constructor copies Unicode characters from value, starting at startIndex and ending at (startIndex + length - 1).

If the specified range is outside of the memory allocated for the sequence of characters, the behavior of this constructor is system dependent. For example, such a situation might cause an access violation.

In C#, this constructor is defined only in the context of unsafe code.

NoteNote:

   Calls to this constructor on systems using the Intel Itanium processor may throw a DataMisalignedException. If this occurs, call the String.String(Char[], Int32, Int32) constructor instead of this constructor.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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