ReadAsync(byte[], int, int, CancellationToken)
This method returns a Task-based asynchronous version of OracleClob.Read()
, which reads a specified number of bytes from the ODP.NET LOB instance and populates the buffer.
Declaration
// C# public override Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
Parameters
-
buffer
The byte array buffer that is populated.
-
offset
The offset (in bytes) at which the buffer is populated.
-
count
The amount of bytes to be read.
-
cancellationToken
The input cancellation token which can be used by the application to cancel the task.
Return Value
Task<int>
object representing the asynchronous operation immediately without blocking the calling thread for the whole duration of the query execution.
Implements
Stream
Exceptions
-
ObjectDisposedException
- The object is already disposed. -
InvalidOperationException
- TheOracleConnection
is not open or has been closed during the lifetime of the object. -
ArgumentOutOfRangeException
- This exception is thrown if any of the following conditions exist:-
The offset or the count parameter is less than
0
. -
The offset is greater than or equal to the
buffer.Length
. -
The offset and the count together are greater than the
buffer.Length
.
-