C# 空字符的表示方法

char m1 = '\0';             //最简
char m2 = char.MinValue;     //最值得推荐
char m3 = (char)0;
char m4 = Convert.ToChar(0);     //类似m3
char m5 = ((char?)null).GetValueOrDefault();

转自：http://www.cnblogs.com/lilixinshu/archive/2007/08/31/876936.html