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# NpgsqlCopyIn Properties

The properties of the NpgsqlCopyIn class are listed below. For a complete list of NpgsqlCopyIn class members, see the NpgsqlCopyIn Members topic.

#### Public Instance Properties

CopyBufferSize | Set before a COPY IN query to define size of internal buffer for reading from given CopyStream.
CopyStream | The stream provided by user or generated upon Start(). User may provide a stream to constructor; it is used to pass to server all data read from it. Otherwise, call to Start() sets this to a writable NpgsqlCopyInStream that passes all data written to it to server. In latter case this is only available while the copy operation is active and null otherwise.
FieldCount | Returns number of fields expected on each input row if this operation is currently active, otherwise -1
IsActive | Returns true if the connection is currently reserved for this operation.
IsBinary | Returns true if this operation is currently active and in binary format.
NpgsqlCommand | The Command used to execute this copy operation.

#### See Also

NpgsqlCopyIn Class | Npgsql Namespace