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C# FileStream.Read Method【C#.Net教程】,C#,FileStream.Read,Method

作者:搜教程发布时间:2019-11-27分类:.Net教程浏览:69评论:0


导读:Readsablockofbytesfromthestreamandwritesthedatainagivenbuffer.public...
Reads a block of bytes from the stream and writes the data in a given buffer.

public override int Read(
	byte[] array,
	int offset,
	int count
)


Parameters

  • array

  • Type:聽System.Byte[]

    When this method returns, contains the specified byte array with the values between聽offset聽and (offset聽+聽count聽- 1)聽replaced by the bytes read from the current source.

  • offset

  • Type:聽System.Int32

    The byte offset in聽array聽at which the read bytes will be placed.

  • count

  • Type:聽System.Int32

    The maximum number of bytes to read.

Return Value

Type:聽System.Int32
The total number of bytes read into the buffer. This might be less than the number of bytes requested if that number of bytes are not currently available, or zero if the end of the stream is reached.

Exceptions



Exception Condition
ArgumentNullException

array聽is聽null.

ArgumentOutOfRangeException

offset聽or聽count聽is negative.

NotSupportedException

The stream does not support reading.

IOException

An I/O error occurred.

ArgumentException

offset聽and聽count聽describe an invalid range in聽array.

ObjectDisposedException

Methods were called after the stream was closed.


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