SqlDataRecord.GetBytes Method
Gets the value for the column specified by the ordinal as an array of Byte objects.
Assembly: System.Data (in System.Data.dll)
public long GetBytes( int ordinal, long fieldOffset, byte[] buffer, int bufferOffset, int length )
Parameters
- ordinal
- Type: System.Int32
The zero-based ordinal of the column.
- fieldOffset
- Type: System.Int64
The offset into the field value to start retrieving bytes.
- buffer
- Type: System.Byte[]
The target buffer to which to copy bytes.
- bufferOffset
- Type: System.Int32
The offset into the buffer to which to start copying bytes.
- length
- Type: System.Int32
The number of bytes to copy to the buffer.
Implements
IDataRecord.GetBytes(Int32, Int64, Byte[], Int32, Int32)| Exception | Condition |
|---|---|
| IndexOutOfRangeException | The ordinal is less than 0 or greater than the number of columns (that is, FieldCount). |
| SqlNullValueException | The column specified by ordinal is null. |
| InvalidCastException | There is a type mismatch. |
This method enables you to obtain a binary value either in a single call or in chunks. Getting the value in chunks is useful for large values or values of unknown size.
To obtain the value in several chunks, allocate a byte array of the chunk-size and call GetBytes repeatedly, adjusting the fieldOffset parameter accordingly in each call.
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
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.
