c# - 通过精确解析从 String 转换为 DateTime 失败

Question

我一直在尝试将 String(进一步除以子字符串)转换为 DateTime。然而，变量的第一部分有效，但第二部分的输出有点滑稽。

admissionDischargeDT 的值为 12/30/2016 12:00 am - 12/30/2016 11:59 pm

admissionDT:12/30/2016 12:00 am
admissionDTInput:{30/12/2016 12:00:00 AM}

dischargeDT:12/30/2016 11:59 pm 
dischargeDTInput: {1/1/0001 12:00:00 AM}

显示的错误信息是

String was not recognized as a valid DateTime.

任何帮助将不胜感激

string admissionDischargeDT = adDT.Text;
string admissionDT = admissionDischargeDT.Substring(0,19);
string dischargeDT = admissionDischargeDT.Substring(21,20);

DateTime admissionDTinput = DateTime.ParseExact(admissionDT,"MM/dd/yyyy hh:mm tt",System.Globalization.CultureInfo.InvariantCulture);

DateTime dischargeDTinput = DateTime.ParseExact(dischargeDT, "MM/dd/yyyy hh:mm tt", System.Globalization.CultureInfo.InvariantCulture);

Answer 1

您对第二个值的解析逻辑不正确。应该是:

string dischargeDT = admissionDischargeDT.Substring(22, 19);