假设double test=343392590725.6758
此double值,其共16位数字,整数部分12位,小数部分4位
然后测试结果就是可以再多输出一位小数的:
double less1BitDouble = 343392590725.6758; string less1BitDoubleStrG = less1BitDouble.ToString("G"); //"343392590725.676" string less1BitDoubleStrF = less1BitDouble.ToString("F"); //"343392590725.68" string less1BitDoubleStrF6 = less1BitDouble.ToString("F6"); //"343392590725.676000" |
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double less1BitDouble = 343392590725.6758; string less1BitDoubleStrG = less1BitDouble.ToString("G"); //"343392590725.676" string less1BitDoubleStrF = less1BitDouble.ToString("F"); //"343392590725.68" string less1BitDoubleStrF6 = less1BitDouble.ToString("F6"); //"343392590725.676000" |
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string test1=test.ToString("F");//结果为343392590725.68,保留小数点后两位
string test2=test.ToString("F6");//结果为343392590725.675800,保留小数点后6位,不足用0补上
string test3=test.ToString("G");//结果为343392590725.6758,默认输出原先的,多余double最多15个数字
string test4=test.ToString("0.00")//结果为343392590725.68,保留小数点后两位
1 2 3 4 | double less1BitDouble = 343392590725.6758; string less1BitDoubleStrG = less1BitDouble.ToString("G"); //"343392590725.676" string less1BitDoubleStrF = less1BitDouble.ToString("F"); //"343392590725.68" string less1BitDoubleStrF6 = less1BitDouble.ToString("F6"); //"343392590725.676000" |
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1 2 3 4 | double smallValDouble = 1234.567890; string smallValDoubleStrG = smallValDouble.ToString("G"); //1234.56789 string smallValDoubleStrF = smallValDouble.ToString("F"); //1234.57 string smallValDoubleStrF6 = smallValDouble.ToString("F6"); //1234.567890 |
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结果很明显,是可以安装所期望的正常输出的:
F:默认是2位小数点
F6:输出小数点后6位,不够的话用0补齐
G:默认输出原先的,保留小数点后面的位数(对于double默认是最多15个,详见:標準數值格式字串)。