示例#1
0
        private void FillSchemaFromFieldDescriptorList(DataTable table)
        {
            foreach (FieldDescriptor fd in this.FieldDescriptors)
            {
                DataColumn col = new DataColumn(fd.FieldName);
                //DbaseIIIDataColumn col = new DbaseIIIDataColumn(fd.FieldName);
                col.DataType = typeof(object);

                //http://www.clicketyclick.dk/databases/xbase/format/data_types.html
                switch (fd.FieldType)
                {
                    case 'C': //string < 254 chars
                        col.DataType = typeof(string);
                        //Below ensures we can fit an int's string representation since the original
                        //length is specified in bytes for the char[]. Go larger if specified (like DES in HEADER.DBF).
                        col.MaxLength = fd.FieldLength < 11 ? 11 : fd.FieldLength;
                        col.SetByteLength(fd.FieldLength);
                        break;
                    case 'N': //int64 (up to 18 chars according to dBase spec)
                        col.DataType = typeof(long);
                        col.SetByteLength(fd.FieldLength);
                        break;
                    case 'L': //nullable bool, byte
                        throw new NotImplementedException("Encountered /'L/' for nullable bool!");
                        break;
                    case 'D': //YYYYMMDD
                        throw new NotImplementedException("Encountered /'D/' for YYYYMMDD!");
                        break;
                    case '@': //long1 = days since 1-Jan-4713 BC, long2 = hrs * 3600000 + min * 60000 + sec * 1000
                        throw new NotImplementedException("Encountered /'@/' for time!");
                        break;
                    case 'O': //double (8 bytes)
                        throw new NotImplementedException("Encountered /'O/' for double!");
                        break;
                    case '+': //auto-increment (long)
                        throw new NotImplementedException("Encountered /'+/' for auto-increment!");
                        break;
                }

                table.Columns.Add(col);
            }
        }