C# 14位日期型字符串yyyyMMddHHmmss转变为日期格式

DateTime   dt   =   DateTime.ParseExact("20060709110901","yyyyMMddHHmmss", System.Globalization.CultureInfo.CurrentCulture);

或者这样

var ReadyBeginTime = request.PrehotDate.Trim().ConvertToNullableDateTime("yyyyMMddHHmmss");
if (ReadyBeginTime.HasValue)
{
creating.ReadyBeginTime = ReadyBeginTime.Value;
}
else
{
return result.IsFailure("预热开始时间不能为空！");
}