Question

在 StreamReader 期间，我无法将字符串转换为日期：

string line;
StreamReader sr = new StreamReader(file.ToString());
while ((line = sr.ReadLine()) != null)
{
 string col13 = line.Split(',')[13]; //"22/06/2014 00:00:00"    
}

我尝试了以下代码，但出现错误：

DateTime x = DateTime.Parse(col13); 
//or
DateTime y = Convert.ToDateTime(col13);
//System.FormatException: 'String was not recognized as a valid DateTime.'

CultureInfo culture = new CultureInfo("en-US");
DateTime tempDate = Convert.ToDateTime(col13, culture);
//System.FormatException: 'String was not recognized as a valid DateTime.'

DateTime y = DateTime.ParseExact(col13, "dd/mm/yyyy hh:mm:ss", CultureInfo.InvariantCulture);
//System.FormatException: 'DateTime pattern 'm' appears more than once with different values.'

Answer 1

以DateTime.ParseExact()格式，而不是mm使用MM

从MSDN，

MM

“ MM”自定义格式说明符将月份表示为来自 01至12

mm

“ mm”自定义格式说明符将分钟表示为数字从00到59。

因此，您的DateTime.ParseExact()将

DateTime y = DateTime.ParseExact(col13, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture);
                                          //^^      ^^ This needs to update

在CV StreamReader（C＃）期间将字符串转换为DateTime

1 个答案: