这怎么可能呢？ （这是从在VS2008即时窗口）

 的String.Compare？（ - ，+）
-1
？的String.Compare（ -  0，0）
1
 

解决方案

从上的的String.Compare （重点煤矿）：

比较使用当前的文化，以获得区域性特定信息，如大小写规则和单个字符的字母顺序。例如，一种文化可以指定字符的某些组合被视为单个字符，或大小写字符以特定方式进行比较，或一个字符的排序顺序取决于$ P $字符pcede或按照它

How this can be ? (This is taken from the immediate window in VS2008)

?string.Compare("-", "+")
-1
?string.Compare("-0", "+0")
1

From the remarks on String.Compare (emphasis mine):

The comparison uses the current culture to obtain culture-specific information such as casing rules and the alphabetic order of individual characters. For example, a culture could specify that certain combinations of characters be treated as a single character, or uppercase and lowercase characters be compared in a particular way, or that the sorting order of a character depends on the characters that precede or follow it.