internal static DbfFileHeader ReadHeader(Stream str)
{
DbfFileHeader header = new DbfFileHeader();
header.Version = (byte)str.ReadByte();
if (header.Version != 3)
{
return(null);
}
str.Read(header.LastEdited, 0, 3);
byte[] numRecs = new byte[4];
str.Read(numRecs, 0, 4);
header.NumberOfRecords = BitConverter.ToInt32(numRecs, 0);
byte[] lenHeader = new byte[2];
str.Read(lenHeader, 0, 2);
header.LengthOfHeader = BitConverter.ToInt16(lenHeader, 0);
byte[] lenRecord = new byte[2];
str.Read(lenRecord, 0, 2);
header.LengthOfRecord = BitConverter.ToInt16(lenRecord, 0);
str.Read(header.ReservedOne, 0, 2);
header.IncompleteTransaction = (byte)str.ReadByte();
header.EncryptionFlag = (byte)str.ReadByte();
str.Read(header.FreeRecordThread, 0, 4);
str.Read(header.ReservedMultiUser, 0, 8);
header.MdxFlag = (byte)str.ReadByte();
header.Language = (byte)str.ReadByte();
str.Read(header.ReservedTwo, 0, 2);
return(header);
}
public static DbfFileHeader GetDefaultHeader()
{
DbfFileHeader header = new DbfFileHeader();
header.Version = 0x3;
header.LastEdited = new byte[3] {
0x62, 0x03, 0x12
};
//header.NumberOfRecords = 0x0;
//header.LengthOfHeader = BitConverter.ToInt16(new byte[] { 0x61, 0x01 }, 0);
//header.LengthOfRecord = ResourceDatabase.DefinitionSize;
header.ReservedOne = new byte[2] {
0x0, 0x0
};
header.IncompleteTransaction = 0x0;
header.EncryptionFlag = 0x0;
header.FreeRecordThread = new byte[4] {
0x0, 0x0, 0x0, 0x0
};
header.ReservedMultiUser = new byte[8] {
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
};
header.MdxFlag = 0x0;
header.Language = 0x0;
header.ReservedTwo = new byte[2] {
0x0, 0x0
};
return(header);
}
public DbfFile(DataTable dt)
{
int millenium = 2000; //Free Y3K bug
this.Header = DbfFileHeader.GetDefaultHeader();
this.Header.NumberOfRecords = dt.Rows.Count;// + 1;
this.Header.LastEdited = new byte[] { (byte)(DateTime.Today.Year - millenium), (byte)DateTime.Today.Month, (byte)DateTime.Today.Day };
this.Header.LengthOfHeader = (short)
(sizeof(byte) //version
+ this.Header.LastEdited.Length
+ sizeof(int) //NumberOfRecords
+ sizeof(short) //LengthOfHeader
+ sizeof(short) //LengthOfRecord
+ this.Header.ReservedOne.Length
+ sizeof(byte) //IncompleteTransaction
+ sizeof(byte) //EncryptionFlag
+ this.Header.FreeRecordThread.Length
+ this.Header.ReservedMultiUser.Length
+ sizeof(byte) //MdxFlag
+ sizeof(byte) //Language
+ this.Header.ReservedTwo.Length
//+ (this.Header.NumberOfRecords * this.Header.LengthOfRecord)
//+ (this.Header.NumberOfRecords * FieldDescriptor.Size)
+ sizeof(byte) //Terminator
);
this._dataTable = dt;
}
public static DbfFileHeader GetDefaultHeader()
{
DbfFileHeader header = new DbfFileHeader();
header.Version = 0x3;
header.LastEdited = new byte[3] { 0x62, 0x03, 0x12 };
//header.NumberOfRecords = 0x0;
//header.LengthOfHeader = BitConverter.ToInt16(new byte[] { 0x61, 0x01 }, 0);
//header.LengthOfRecord = ResourceDatabase.DefinitionSize;
header.ReservedOne = new byte[2] { 0x0, 0x0 };
header.IncompleteTransaction = 0x0;
header.EncryptionFlag = 0x0;
header.FreeRecordThread = new byte[4] { 0x0, 0x0, 0x0, 0x0 };
header.ReservedMultiUser = new byte[8] { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
header.MdxFlag = 0x0;
header.Language = 0x0;
header.ReservedTwo = new byte[2] { 0x0, 0x0 };
return header;
}
internal static DbfFileHeader ReadHeader(Stream str)
{
DbfFileHeader header = new DbfFileHeader();
header.Version = (byte)str.ReadByte();
if (header.Version != 3)
return null;
str.Read(header.LastEdited, 0, 3);
byte[] numRecs = new byte[4];
str.Read(numRecs, 0, 4);
header.NumberOfRecords = BitConverter.ToInt32(numRecs, 0);
byte[] lenHeader = new byte[2];
str.Read(lenHeader, 0, 2);
header.LengthOfHeader = BitConverter.ToInt16(lenHeader, 0);
byte[] lenRecord = new byte[2];
str.Read(lenRecord, 0, 2);
header.LengthOfRecord = BitConverter.ToInt16(lenRecord, 0);
str.Read(header.ReservedOne, 0, 2);
header.IncompleteTransaction = (byte)str.ReadByte();
header.EncryptionFlag = (byte)str.ReadByte();
str.Read(header.FreeRecordThread, 0, 4);
str.Read(header.ReservedMultiUser, 0, 8);
header.MdxFlag = (byte)str.ReadByte();
header.Language = (byte)str.ReadByte();
str.Read(header.ReservedTwo, 0, 2);
return header;
}
