public abstract Read ( char buffer, int offset, int count ) : int | ||
buffer | char | |
offset | int | |
count | int | |
return | int |
// Read data of specified length from specified offset into a buffer public long Read(long offset, char[] buffer, int offsetInBuffer, int count) { if (IsNull) { throw new SqlNullValueException(); } // Validate the arguments if (buffer == null) { throw new ArgumentNullException("buffer"); } if (offset > this.Length || offset < 0) { throw new ArgumentOutOfRangeException("offset"); } if (offsetInBuffer > buffer.Length || offsetInBuffer < 0) { throw new ArgumentOutOfRangeException("offsetInBuffer"); } if (count < 0 || count > buffer.Length - offsetInBuffer) { throw new ArgumentOutOfRangeException("count"); } // Adjust count based on data length if (count > this.Length - offset) { count = (int)(this.Length - offset); } if (count != 0) { switch (_state) { case SqlBytesCharsState.Stream: if (m_stream.Position != offset) { m_stream.Seek(offset, SeekOrigin.Begin); } m_stream.Read(buffer, offsetInBuffer, count); break; default: // ProjectK\Core doesn't support long-typed array indexers Debug.Assert(offset < int.MaxValue); Array.Copy(m_rgchBuf, checked ((int)offset), buffer, offsetInBuffer, count); break; } } return(count); }
// Read data of specified length from specified offset into a buffer public long Read(long offset, char[] buffer, int offsetInBuffer, int count) { if (IsNull) { throw new SqlNullValueException(); } // Validate the arguments if (buffer == null) { throw new ArgumentNullException(nameof(buffer)); } if (offset > Length || offset < 0) { throw new ArgumentOutOfRangeException(nameof(offset)); } if (offsetInBuffer > buffer.Length || offsetInBuffer < 0) { throw new ArgumentOutOfRangeException(nameof(offsetInBuffer)); } if (count < 0 || count > buffer.Length - offsetInBuffer) { throw new ArgumentOutOfRangeException(nameof(count)); } // Adjust count based on data length if (count > Length - offset) { count = (int)(Length - offset); } if (count != 0) { switch (_state) { case SqlBytesCharsState.Stream: if (_stream.Position != offset) { _stream.Seek(offset, SeekOrigin.Begin); } _stream.Read(buffer, offsetInBuffer, count); break; default: Array.Copy(_rgchBuf, offset, buffer, offsetInBuffer, count); break; } } return(count); }