DataReaderExtensions.GetBytes Method

Reference

Definition

Namespace:: System.Data

Assemblies:: netstandard.dll, System.Data.Common.dll

Assembly:: System.Data.Common.dll

Assembly:: netstandard.dll

Source:: DataReaderExtensions.cs

Source:: DataReaderExtensions.cs

Source:: DataReaderExtensions.cs

Important

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Reads a specified number of bytes from the specified column starting at a specified index and writes them to a buffer starting at a specified position in the buffer.

public:
[System::Runtime::CompilerServices::Extension]
 static long GetBytes(System::Data::Common::DbDataReader ^ reader, System::String ^ name, long dataOffset, cli::array <System::Byte> ^ buffer, int bufferOffset, int length);

public static long GetBytes(this System.Data.Common.DbDataReader reader, string name, long dataOffset, byte[] buffer, int bufferOffset, int length);

static member GetBytes : System.Data.Common.DbDataReader * string * int64 * byte[] * int * int -> int64

<Extension()>
Public Function GetBytes (reader As DbDataReader, name As String, dataOffset As Long, buffer As Byte(), bufferOffset As Integer, length As Integer) As Long

Parameters

reader: DbDataReader

The data reader to get the column value from.

name: String

The name of the column.

dataOffset: Int64

The index within the row from which to begin the read operation.

buffer: Byte[]

The buffer into which to copy the data.

bufferOffset: Int32

The index with the buffer to which the data will be copied.

length: Int32

The maximum number of characters to read.

Returns

Int64

The actual number of bytes read.

Exceptions

IndexOutOfRangeException

The name specified is not a valid column name.

InvalidCastException

The specified cast is not valid.

Applies to

Продукт	Версии
.NET	Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Standard	2.1

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