public static IEnumerable <DataGroup> GetGroups(DataGroupCollection groups)
{
if (groups == null)
{
yield break;
}
foreach (DataGroup group in groups)
{
yield return(group);
foreach (DataGroup child in GetGroups(group.Groups))
{
yield return(child);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="HeaderBlock" /> class.
/// </summary>
/// <param name="mdf">The MDF.</param>
/// <exception cref="System.FormatException"></exception>
public HeaderBlock(Mdf mdf)
: base(mdf)
{
byte[] data = new byte[Size - 4];
int read = Mdf.Data.Read(data, 0, data.Length);
if (read != data.Length)
{
throw new FormatException();
}
FileComment = null;
ProgramBlock = null;
uint ptrFirstDataGroup = BitConverter.ToUInt32(data, 0);
uint ptrTextBlock = BitConverter.ToUInt32(data, 4);
uint ptrProgramBlock = BitConverter.ToUInt32(data, 8);
DataGroupsCount = BitConverter.ToUInt16(data, 12);
Date = UTF8Encoding.UTF8.GetString(data, 14, 10);
Time = UTF8Encoding.UTF8.GetString(data, 24, 8);
Author = UTF8Encoding.UTF8.GetString(data, 32, 32);
Organization = UTF8Encoding.UTF8.GetString(data, 64, 32);
Project = UTF8Encoding.UTF8.GetString(data, 96, 32);
Subject = UTF8Encoding.UTF8.GetString(data, 128, 32);
/// Get the current version of MDF file
/// and check if the property is avaible in this version
var _RequiredVersionForTimeStamp = (MdfVersionAttribute)Attribute.GetCustomAttribute(typeof(HeaderBlock).GetProperty("TimeStamp"), typeof(MdfVersionAttribute));
if (this.Mdf.IDBlock.Version >= _RequiredVersionForTimeStamp.Version)
{
TimeStamp = BitConverter.ToUInt64(data, 160);
}
else
{
TimeStamp = Convert.ToUInt64(_RequiredVersionForTimeStamp.DefaultValue);
}
/// Get the current version of MDF file
/// and check if the property is avaible in this version
var _RequiredVersionForUTCTimeOffset = (MdfVersionAttribute)Attribute.GetCustomAttribute(typeof(HeaderBlock).GetProperty("UTCTimeOffset"), typeof(MdfVersionAttribute));
if (this.Mdf.IDBlock.Version >= _RequiredVersionForUTCTimeOffset.Version)
{
UTCTimeOffset = BitConverter.ToInt16(data, 168);
}
else
{
UTCTimeOffset = Convert.ToInt16(_RequiredVersionForUTCTimeOffset.DefaultValue);
}
/// Get the current version of MDF file
/// and check if the property is avaible in this version
var _RequiredVersionForTimeQuality = (MdfVersionAttribute)Attribute.GetCustomAttribute(typeof(HeaderBlock).GetProperty("TimeQuality"), typeof(MdfVersionAttribute));
if (this.Mdf.IDBlock.Version >= _RequiredVersionForTimeQuality.Version)
{
TimeQuality = (TimeQuality)BitConverter.ToUInt16(data, 170);
}
else
{
TimeQuality = (TimeQuality)Convert.ToUInt16(_RequiredVersionForTimeQuality.DefaultValue);
}
/// Get the current version of MDF file
/// and check if the property is avaible in this version
var _RequiredVersionForTimerIdentification = (MdfVersionAttribute)Attribute.GetCustomAttribute(typeof(HeaderBlock).GetProperty("TimerIdentification"), typeof(MdfVersionAttribute));
if (this.Mdf.IDBlock.Version >= _RequiredVersionForTimerIdentification.Version)
{
TimerIdentification = UTF8Encoding.UTF8.GetString(data, 172, 32);
}
else
{
TimerIdentification = _RequiredVersionForTimerIdentification.DefaultValue.ToString();
}
/// Check if ptrTextBlock is null
if (ptrTextBlock != 0)
{
Mdf.Data.Position = ptrTextBlock;
FileComment = new TextBlock(mdf);
}
/// Check if ptrProgramBlock is null
if (ptrProgramBlock != 0)
{
Mdf.Data.Position = ptrProgramBlock;
ProgramBlock = new ProgramBlock(mdf);
}
/// Check if ptrFirstDataGroup is null
if (ptrFirstDataGroup != 0)
{
Mdf.Data.Position = ptrFirstDataGroup;
DataGroups = new DataGroupCollection(mdf, new DataGroupBlock(mdf));
}
}
