如何将char数组转换为DateTime.Parse的字符串? [英] How to convert char array into string for DateTime.Parse?

问题描述

我正在我的控制器中使用它:

I am using this in my controller:

char[] arrDate = date.ToArray();
DateTime dt = DateTime.Parse(arrDate[0] + arrDate[1] + "/" +
                             arrDate[2] + arrDate[3] + "/" +
                             arrDate[4] + arrDate[5] + arrDate[6] + arrDate[7]);

错误:

System.FormatException:无法将字符串识别为有效的DateTime.

System.FormatException: String was not recognized as a valid DateTime.

推荐答案

请考虑以下问题:

var date = "11252017";
var arrDate = date.ToArray();
var strDate = arrDate[0] + arrDate[1] + "/" +
              arrDate[2] + arrDate[3] + "/" +
              arrDate[4] + arrDate[5] + arrDate[6] + arrDate[7]; // 98/25/2017

请注意:

• '1'+'1'= 98 *⇒ char + char = int
• 98 +"/" ="98/" ⇒ int + string = string
• "98/" +'2'="98/2" ⇒字符串 + char = 字符串

• '1' + '1' = 98* ⇒ char + char = int
• 98 + "/" = "98/" ⇒ int + string = string
• "98/" + '2' = "98/2" ⇒ string + char = string

解决方法:

var dt = DateTime.Parse("" +
                        arrDate[0] + arrDate[1] + "/" +
                        arrDate[2] + arrDate[3] + "/" +
                        arrDate[4] + arrDate[5] + arrDate[6] + arrDate[7]);

* ASCII 表示形式:

十进制
• '1'为 49

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