将十进制转换为双精度返回科学计数法

Question

I am reading data from an Excel file and the data value and the value is 0.0000000001. When it is read from C# the value is returned as 1E-10. The cell value is row.Cells[2].Value = 1E-10

I tried from other posts to first convert to a decimal:

decimal h1 = Decimal.Parse(row.Cells[2].Value.ToString(), System.Globalization.NumberStyles.Any);

and here h1 = 0.0000000001 as expected.

I need the value to be in double so I then did:

Double val1 = Decimal.ToDouble(h1);

But val1 is now back to 1E-10

How can I keep the value as double = 0.0000000001?

Please test the following snippet of code to illustrate what the issue is:

decimal t1 = Decimal.Parse("1E-10", System.Globalization.NumberStyles.Any); Double t2 = Convert.ToDouble(t1);

You will see t1 =.0000000001 and t2 = 1E-10

Answer 1

1E-10 is the same as 0.0000000001

I have not tested it but maybe this will help:

string variable = $"{val1:N10}";

Answer 2

Use the default conversion class

 Double val1 = Convert.ToDouble(h1)

And convert to string to represent the full number

Console.WriteLine(h1.toString("F10"))

Where F10 it's the decimales format what you want