C# 字符串转日期格式

string createDate="02 23 2022  5:19PM"; 
DateTime resultCreateDate;
//判断字符串是否是日期格式
 if (DateTime.TryParse(createDate.ToString(), out resultCreateDate))
 {
      //是，输出resultCreateDate  输出：2022/02/23 05:19
 }
else 
{

//否
}

string createDate="02 23 2022  5:19PM"; 
System.Globalization.DateTimeFormatInfo a= new System.Globalization.CultureInfo("en-US", false).DateTimeFormat;
a.ShortTimePattern = "t";

DateTime resultCreateDate= DateTime.Parse(createDate", a);
//输出：2022/02/23 05:19