public static bool TryCreate(IRowVersion rowVersion, out string eTag)
{
if (rowVersion == null)
{
throw new ArgumentNullException("rowVersion");
}
eTag = null;
if (rowVersion != null)
{
eTag = BitHelper.ConvertToHex(rowVersion.RowVersion);
}
return(eTag != null);
}
public static bool TryCreate(IPreconditionInformation info, out string eTag)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
eTag = null;
if (info.RowVersion != null && info.RowVersion.Length > 0)
{
eTag = BitHelper.ConvertToHex(info.RowVersion);
}
else
{
eTag = BitHelper.ConvertToHex(info.ModifiedOn);
}
return(eTag != null);
}
public static bool TryCreate(IEnumerable <IModifiedTimestamp> modifiableItems, out string eTag)
{
if (modifiableItems == null)
{
throw new ArgumentNullException(nameof(modifiableItems));
}
if (modifiableItems.Any())
{
// In a collection, only the most recent modified date is interesting.
eTag = BitHelper.ConvertToHex(modifiableItems.Max(i => i.ModifiedOn));
return(true);
}
else
{
eTag = null;
return(false);
}
}
public static bool TryCreate(DateTimeOffset timestamp, out string eTag)
{
eTag = BitHelper.ConvertToHex(timestamp);
return(true);
}