Use a Custom Format string:
314159.ToString("#.###+E0")
Produces
3.142+E5
题
When I display numbers as strings in scientific notation using tostring("E4"), the leading zeros are displayed so that the exponent is always three digits. How can I get rid of these leading zeros?
For example, I want this: "5.5E9", and not this: "5.5E+009".
解决方案
Use a Custom Format string:
314159.ToString("#.###+E0")
Produces
3.142+E5