What is this value means 1 845E-07 in excel

Question

I'm using interop services to read an excel sheet from C#. One of the cells on my sheet has a value of 0.00. Yet, at runtime, when I verify the value of that cell in C# code, I am receiving the number "1.845E-07". When I checked the Excel sheet and right-clicked on that cell, I saw the value "1.845E-07" in the sample area. How is the value exacted? Please assist me. I am unable to give the code here due to its size. this sentence:

if (Convert.ToString(((Excel.Range)worksheet.Cells[iRowindex, colIndex_q10]).Value2) != string.Empty)
{
    drRow[dtSourceEXLData.Columns[constants.Floor]] = ((Excel.Range)worksheet.Cells[iRowindex, colIndex_q10]).Value2.ToString();
}

Same problem with Date cell "39448". what does this mean?

Answer 1

The precise value, expressed in scientific notation, commonly referred to as exponential notation, is 1.84E-07.

0.0000001845 is equal to 1.845E-07. Unless you change the formatting of the cell to display more decimals, Excel will display a number that is very near to 0 as 0.

However, C# will retrieve the cell's actual value. When converting tiny values to strings, the ToString function uses the e-notation.

Alternatively, if you don't want to utilize the e-notation, you can specify a format string.