c# float类型和double类型相乘出现精度丢失

c# float类型和double类型相乘出现精度丢失

double db = 4.0;
double db2 = 1.3;
float f = 1.3F;
float f2 = 4.0F;
Decimal de = Convert.ToDecimal(f);
MessageBox.Show("double * float " + (db * f).ToString() + "rn double * double " + (db * db2).ToString());
MessageBox.Show("double * (double)float " + (db * Convert.ToDouble(f)).ToString() + "rn float * float " + (f * f2).ToString()
+ "rn (Decimal)double * (Decimal)float " + (Convert.ToDecimal(db) * Convert.ToDecimal(f)).ToString());
//Convert.ToDecimal(db)转化成Decimal类型计算，Decimal 128位高精度浮点数，常用于金融运算，不会出现浮点数计算的误差

本文解决办法参考http://www.cnblogs.com/quietwalk/archive/2010/05/02/1725885.html