我使用这个代码将Timespan转换为String(例如：14:53)：
myTimeSpan.ToString("hh:mm");
但是发生这个错误：
Input string was not in a correct format
这样做的正确方法是什么？
解决方法
myTimeSpan.ToString(@"hh\:mm")
Custom TimeSpan Format Strings
The custom TimeSpan format specifiers do not include placeholder separator symbols,such as the symbols that separate days from hours,hours from minutes,or seconds from fractional seconds. Instead,these symbols must be included in the custom format string as string literals. For example,“dd.hh\:mm” defines a period (.) as the separator between days and hours,and a colon (:) as the separator between hours and minutes.
