1 c#中如何判断数组为空？比如一个整型数组 int [,] a = new int [2,2]
a == null || a.length
2 arithmetic operation resulted in an overflow
<a href="http://translate.googleusercontent.com/translate_c?hl=zh-CN&prev=/search%3Fq%3Darithmetic%2Boperation%2Bresulted%2Bin%2Ban%2Boverflow%26hl%3Dzh-CN%26newwindow%3D1%26safe%3Dstrict%26biw%3D1366%26bih%3D621%26prmd%3Dimvnsfd&rurl=translate.google.com.hk&sl=en&u=http://stackoverflow.com/questions/1136086/sql-error-arithmetic-operation-resulted-in-an-overflow&usg=ALkJrhhnlidJ8LTVFurUfGROCx3AdeZGMg" target="_blank">SQL错误“算术运算导致溢出。”</a>
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