C# DateTime ToString Method Explained

In C#, the DateTime.ToString() method is used to convert a DateTime object into its equivalent string representation. This method has multiple overloaded forms that allow you to specify the format of the output. For example:

DateTime now = DateTime.Now;
string dateString = now.ToString(); // 默认格式输出，例如 "9/30/2021 1:30:15 PM"
string customFormat = now.ToString("yyyy-MM-dd HH:mm:ss"); // 自定义格式输出，例如 "2021-09-30 13:30:15"

You can specify the output format by using standard date and time format strings such as “yyyy-MM-dd HH:mm:ss” or custom format strings like “yyyy-MM-dd HH:mm:ss”. Depending on the chosen format, you can display information such as date, time, milliseconds, time zone, and more. For detailed format instructions, refer to the official C# documentation.