public bool SaveDBCFile(string fileName)
{
    try
    {
        // This gets complicated fast

        UInt32 stringBlockOffset = 0;
        for (UInt32 i = 0; i < header.record_count; ++i)
        {
            // Generate new string block offsets
            for (UInt32 j = 0; j < 9; ++j)
            {
                if (body.records[i].SpellName[j] != 0)
                {
                    VirtualStrTableEntry temp;
                    body.strings.TryGetValue(body.records[i].SpellName[j] - 1, out temp);
                    temp.newValue = stringBlockOffset;
                    body.records[i].SpellName[j] = stringBlockOffset;
                    if (temp.value.Length == 0 && stringBlockOffset == 0)
                        ++stringBlockOffset;
                    else
                        stringBlockOffset += (UInt32)temp.value.Length + 1;
                }
                if (body.records[i].ToolTip[j] != 0)
                {
                    VirtualStrTableEntry temp;
                    body.strings.TryGetValue(body.records[i].ToolTip[j] - 1, out temp);
                    temp.newValue = stringBlockOffset;
                    body.records[i].ToolTip[j] = stringBlockOffset;
                    if (temp.value.Length == 0 && stringBlockOffset == 0)
                        ++stringBlockOffset;
                    else
                        stringBlockOffset += (UInt32)temp.value.Length + 1;
                }
                if (body.records[i].Description[j] != 0)
                {
                    VirtualStrTableEntry temp;
                    body.strings.TryGetValue(body.records[i].Description[j] - 1, out temp);
                    temp.newValue = stringBlockOffset;
                    body.records[i].Description[j] = stringBlockOffset;
                    if (temp.value.Length == 0 && stringBlockOffset == 0)
                        ++stringBlockOffset;
                    else
                        stringBlockOffset += (UInt32)temp.value.Length + 1;
                }
                if (body.records[i].Rank[j] != 0)
                {
                    VirtualStrTableEntry temp;
                    body.strings.TryGetValue(body.records[i].Rank[j] - 1, out temp);
                    temp.newValue = stringBlockOffset;
                    body.records[i].Rank[j] = stringBlockOffset;
                    if (temp.value.Length == 0 && stringBlockOffset == 0)
                        ++stringBlockOffset;
                    else
                        stringBlockOffset += (UInt32)temp.value.Length + 1;
                }
            }
        }

        // Here was 2317797
        // becomes 5142725
        header.string_block_size = (int)stringBlockOffset;

        if (File.Exists(fileName))
            File.Delete(fileName);
        FileStream fs = new FileStream(fileName, FileMode.Create);
        BinaryWriter writer = new BinaryWriter(fs);

        // Write header
        int count = Marshal.SizeOf(typeof(SpellDBC_Header));
        byte[] buffer = new byte[count];
        GCHandle gcHandle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
        Marshal.StructureToPtr(header, gcHandle.AddrOfPinnedObject(), true);
        writer.Write(buffer, 0, count);
        gcHandle.Free();

        // Write records
        for (UInt32 i = 0; i < header.record_count; ++i)
        {
            // Write main body
            count = Marshal.SizeOf(typeof(SpellDBC_Record));
            buffer = new byte[count];
            gcHandle = GCHandle.Alloc(buffer, GCHandleType.Pinned);
            Marshal.StructureToPtr(body.records[i], gcHandle.AddrOfPinnedObject(), true);
            writer.Write(buffer, 0, count);
            gcHandle.Free();
        }

        // Write string block
        foreach (KeyValuePair<UInt32, VirtualStrTableEntry> entry in body.strings)
        {
            string toWrite = entry.Value.value + "\0";
            writer.Write(Encoding.UTF8.GetBytes(toWrite), 0, entry.Value.value.Length + 1);
        }

        writer.Close();
        fs.Close();
    }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
        return false;
    }

    return true;
}