/// <summary>
/// genereate by time
/// the time elapsed from base time in miliseconds (fff)
/// </summary>
/// <param name="baseDateTime">the time when application released</param>
/// <returns></returns>
public static string GenerateByTime(DateTime?baseDateTime = null)
{
Thread.Sleep(1);
var @base = ulong.Parse((baseDateTime ?? new DateTime(2016, 07, 05)) // the time I created this function
.ToString("yyMMddHHmmssfff"));
var now = ulong.Parse(DateTime.Now.ToString("yyMMddHHmmssfff"));
return(Base36.Encode(now - @base));
}
/// <summary>
/// generate base-36 key by MongoDb object Id
/// </summary>
/// <returns></returns>
//public static string GenerateKeyByObjectId()
//{
// return Base36.Encode(Math.Abs(ObjectId.GenerateNewId().GetHashCode()));
//}
public static string GenerateFromSamBegin()
{
Thread.Sleep(1);
var samBegin = new DateTime(2015, 01, 01, 01, 01, 01);
var elapsedTicks = DateTime.Now.Ticks - samBegin.Ticks;
//return Base36.Encode((ulong)Math.Abs(elapsedTicks));
return(Base36.Encode(Math.Abs(elapsedTicks.GetHashCode())));
}
/// <summary>
/// generate base-36 key by on object hash code
/// </summary>
/// <param name="hashCode"></param>
/// <returns></returns>
public static string GenerateKeyByHash(int hashCode)
{
return(Base36.Encode(Math.Abs(hashCode)));
}
/// <summary>
/// generate base-36 key by string hash code
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public static string GenerateKeyByStr(string key)
{
return(Base36.Encode(Math.Abs(key.GetHashCode())));
}
public static string ByHashedTick()
{
Thread.Sleep(1);
return(Base36.Encode(Math.Abs(DateTime.Now.Ticks.GetHashCode())));
}
/// <summary>
/// generate base-36 key by Datetime Ticks (utc)
/// </summary>
/// <returns></returns>
public static string GenerateByTick()
{
return(Base36.Encode((ulong)DateTime.Now.Ticks));
}