public static DateTime?TryDateTime(object val)
{
if (val == null)
{
return(new DateTime?(DateTimeExtension.FromOADate(0.0)));
}
if (IsNumber(val))
{
if (val is DateTime)
{
return(new DateTime?((DateTime)val));
}
if (val is TimeSpan)
{
TimeSpan span = (TimeSpan)val;
return(new DateTime?(DateTimeExtension.FromOADate(span.TotalDays)));
}
double?nullable = TryDouble(val);
if (nullable.HasValue)
{
return(new DateTime?(DateTimeExtension.FromOADate(nullable.Value)));
}
}
else
{
DateTime time;
if ((val is string) && DateTime.TryParse((string)(val as string), (IFormatProvider)CultureInfo.InvariantCulture, (DateTimeStyles)DateTimeStyles.None, out time))
{
return(new DateTime?(time));
}
}
return(null);
}
void UpdateDateTimeItems()
{
double num;
double num2;
List <DateTime> list = new List <DateTime>();
this.Axis.AdjustMinMax(out num, out num2);
DateTime time = DateTimeExtension.FromOADate(num);
DateTime time2 = DateTimeExtension.FromOADate(num2);
while (time < time2)
{
list.Add(time);
switch (this.Axis.MajorTimeUnit)
{
case AxisTimeUnit.Days:
time = time.AddDays((double)((int)this.Axis.MajorUnit));
break;
case AxisTimeUnit.Months:
time = time.AddMonths((int)this.Axis.MajorUnit);
break;
case AxisTimeUnit.Years:
time = time.AddYears((int)this.Axis.MajorUnit);
break;
}
}
list.Add(time);
base.items.Clear();
foreach (DateTime time3 in list)
{
base.items.Add(time3);
}
this.Axis.NotifyAxisChanged("Items");
}
/// <summary>
/// Converts the specified value to a date time value.
/// </summary>
/// <param name="value">The value to convert.</param>
/// <param name="useCulture">if set to <c>true</c> [use culture].</param>
/// <returns>
/// A date time value equivalent to the specified value.
/// </returns>
/// <exception cref="T:System.InvalidCastException">The value cannot be converted.</exception>
public static DateTime?TryDateTime(object value, bool useCulture = true)
{
CultureInfo info = useCulture ? CultureInfo.CurrentCulture : CultureInfo.InvariantCulture;
try
{
if (value == null)
{
return(new DateTime?(DateTimeExtension.FromOADate(0.0)));
}
if (value is double)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((double)value))));
}
if (value is float)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((float)value))));
}
if (value is decimal)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((double)((decimal)value)))));
}
if (value is long)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((long)value))));
}
if (value is int)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((int)value))));
}
if (value is short)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((short)value))));
}
if (value is sbyte)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((sbyte)value))));
}
if (value is ulong)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((ulong)value))));
}
if (value is uint)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((uint)value))));
}
if (value is ushort)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((ushort)value))));
}
if (value is byte)
{
return(new DateTime?(DateTimeExtension.FromOADate((double)((byte)value))));
}
if (value is bool)
{
return(new DateTime?(DateTimeExtension.FromOADate(((bool)value) ? 1.0 : 0.0)));
}
if (value is string)
{
double num;
DateTime time;
if (double.TryParse((string)((string)value), (NumberStyles)NumberStyles.Any, (IFormatProvider)info, out num))
{
return(new DateTime?(DateTimeExtension.FromOADate(num)));
}
if (DateTime.TryParse((string)((string)value), (IFormatProvider)info, (DateTimeStyles)DateTimeStyles.None, out time))
{
return(new DateTime?(time));
}
return(null);
}
if (value is DateTime)
{
return(new DateTime?((DateTime)value));
}
if (value is TimeSpan)
{
TimeSpan span = (TimeSpan)value;
return(new DateTime?(DateTimeExtension.FromOADate(span.TotalDays)));
}
return(new DateTime?(Convert.ToDateTime(value, (IFormatProvider)info)));
}
catch
{
return(null);
}
}
