Question

我需要帮助迁移一种 j法:

(int)System.currentTimeMillis(); //result -186983989 (java) return diferent values

But in C# return alway the same value:

DateTime Jan1st1970 = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
TimeSpan span = DateTime.UtcNow - Jan1st1970;
Int32 resultado = (int)span.TotalMilliseconds; //result is always -2147483648 and i need same as java

短视中很少见到显示正确价值,但在执行中则见<代码>resultado<>/code>。 a)

I need this -186983989 result, same as java.

Answer 1

你希望使用Int64(一)。 Int32 isn t amount to hold the Value.

Int32.MaxValue = 2,147,483,647
Int64.MaxValue = 9,223,372,036,854,775,808

http://forums.asp.net/post/1203789.aspx”rel=“nofollow>http://forums.asp.net/post/1203789.aspx

Answer 2

总数为两倍,而不是印第32号。问题

Answer 3

To mimic the overflow behavior you could do somthing using the unchecked keyword but I don t know enough about Java to know if this correct

DateTime Jan1st1970 = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
TimeSpan span = DateTime.UtcNow - Jan1st1970;

unchecked{
     int mm = Int32.MaxValue;
     mm += (int)(span.TotalMilliseconds % Int32.MaxValue);
     Console.WriteLine(mm); 
}

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