• Articolo

StringReader.Read Method (array<Char[], Int32, Int32)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Reads a block of characters from the input string and advances the character position by count.

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

Syntax

'Declaration
Public Overrides Function Read ( _
    <OutAttribute> buffer As Char(), _
    index As Integer, _
    count As Integer _
) As Integer

public override int Read(
    char[] buffer,
    int index,
    int count
)

Parameters

  • buffer
    Type: array<System.Char[]
    When this method returns, contains the specified character array with the values between index and (index + count - 1) replaced by the characters read from the current source.
  • index
    Type: System.Int32
    The starting index in the buffer.
  • count
    Type: System.Int32
    The number of characters to read.

Return Value

Type: System.Int32
The total number of characters read into the buffer. This can be less than the number of characters requested if that many characters are not currently available, or zero if the end of the underlying string has been reached.

Exceptions

Exception Condition
ArgumentNullException

buffer is nulla null reference (Nothing in Visual Basic).
ArgumentException

The buffer length minus index is less than count.
ArgumentOutOfRangeException

index or count is negative.
ObjectDisposedException

The current reader is closed.

Remarks

This method overrides TextReader.Read.

The method will read up to count characters from the StringReader into the buffer character array starting at position index. Returns the actual number of characters read, or zero if the end of the string has been reached and no characters are read.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.