C# double type formatting without decimal point and 2 digits

Question

I need to format a double as a string with 15 chars, padded left with zeros (0). The string must contain the 2 digits but not the decimal point even thousand separator.

I did it using the below code, but I wonder if there is a better way to do using only format string.

double value = 15.85;
CultureInfo info = CultureInfo.GetCultureInfo("en-US");
string s = (value).ToString("F2", info).Replace(".", string.Empty).PadLeft(15, "0"[0]);
//will output 000000000001585

Answer 1

double value = 15.85;

string s1 = String.Format("{0:000000000000000}", value); // 000000000000015
string s2 = String.Format("{0:0000.00}", value);         // 0015.85

Answer 2

没有一种方法可以显示纯数字格式的不带小数点的小数位数，但是有一种比字符串替换/填充更简单的方法来删除小数点-只需将值乘以100：

(value*100).ToString("000000000000000");