示例#1
0
        public void Read()
        {
            // Open stream for reading.
            using (FileStream stream = File.Open(_path, FileMode.Open, FileAccess.Read))
                using (BinaryReader reader = new BinaryReader(stream))
                {
                    ReadHeader(reader);
                    Memo = ReadMemo();
                    ReadFields(reader);

                    // After reading the Fields, we move the read pointer to the beginning
                    // of the Records, as indicated by the "HeaderLength" value in the header.
                    stream.Seek(Header.HeaderLength, SeekOrigin.Begin);

                    ReadRecords(reader);
                }
        }
示例#2
0
        public DbfField AddNewField(string name, DbfFieldType type, int length)
        {
            if (type == DbfFieldType.Memo)
            {
                if (Header.Version == DbfVersion.dBase4SQLSystemNoMemo ||
                    Header.Version == DbfVersion.dBase4SQLTableNoMemo ||
                    Header.Version == DbfVersion.FoxBaseDBase3NoMemo)
                {
                    throw new InvalidOperationException("Memo fields are not supported for this database version.");
                }

                if (Memo == null)
                {
                    Memo = CreateMemo();
                }
            }

            var field = new DbfField(name, type, length, _encoding);

            Fields.Add(field);

            return(field);
        }