C#中的常用函数

判断数组中是否存在某个数组值

string[] LeaderUID = { \"IFY001\", \"IFY002\", \"IFY003\", \"IFY004\", \"IFY005\", \"IFY006\", \"IFY007\", \"IFY008\", \"IFY009\", \"IFY010\", \"IFY011\", \"IFY012\", \"IFY013\", \"IFY014\", \"IFY015\", \"IFY016\", \"IFY017\", \"IFY018\" };int id = Array.IndexOf(LeaderUID, UserName);if (id==-1){imguid.InnerText = \"不存在\";}else{imguid.InnerText = \"存在\";}

将小数转换为百分数

Convert.ToDouble(DataReader[\"Production\"]).ToString(\"P\");