C#Asp.Net中的DateTime转换 [英] DateTime Conversion in C# Asp.Net

问题描述

亲爱的所有人，

在C#中将字符串解析为DateTime时，以下字符串格式发生以下异常.
字符串pstrDepartureDateTime ="2012-03-27T6:30";
假设字符串格式为 yyyy-MM-ddTHH:mm (即)
字符串pstrDepartureDateTime ="2012-03-27T06:30";表示可以进行解析，并且datetime转换可以正常工作.

请提供解决方案.

谢谢，
lenin

Dear All,

while parsing the string as DateTime in C#, the Following Exception Occurred for the Following string format.
string pstrDepartureDateTime = "2012-03-27T6:30";
suppose if the string format is in yyyy-MM-ddTHH:mm (i.e)
string pstrDepartureDateTime = "2012-03-27T06:30"; means parsing and the datetime conversion is working fine.

pls give solution.

Thanks,
lenin

推荐答案

一个选项是将Date字符串转换为标准格式Date字符串，然后使用DateTime.ParseExact方法

One option is to bring the Date string into the standard format Date string and then to use DateTime.ParseExact method

static void Main(string[] args) {
    string datePattern = @"(\d{4})-(\d{1,2})-(\d{1,2})T(\d{1,2}):(\d{1,2})";
    string dateString = "2012-3-27T6:30";
    Match dateMatch = Regex.Match(dateString, datePattern);
    string spacers = "00--T:";
    if (dateMatch.Success && dateMatch.Groups.Count==6) {
        string formattedDateString = dateMatch.Groups[1].Value;
        for (int i = 2; i < dateMatch.Groups.Count; i++) {
            formattedDateString += spacers[i] + dateMatch.Groups[i].Value.PadLeft(2, '0');
        }
 
	var dt = new DateTime(int.Parse(dateMatch.Groups[1].Value),
	    int.Parse(dateMatch.Groups[2].Value),
	    int.Parse(dateMatch.Groups[3].Value),
	    int.Parse(dateMatch.Groups[4].Value),
	    int.Parse(dateMatch.Groups[5].Value), 0);
	 Console.WriteLine(formattedDateString);
	 Console.Write(dt);
	 Console.ReadKey();
    }
}

您可能还会看到 http://msdn.microsoft.com/en-us/library/5hh873ya.aspx [

You might also look at http://msdn.microsoft.com/en-us/library/5hh873ya.aspx[^]. there is a DateTime.TryParseExact that may be even easier and faster.

不确定问题是什么，但是尝试使用DateTime.TryParse

Not sure what the question is, but try using DateTime.TryParse to ensure[^] if the value is a date time or not.

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