Question

I am trying to make a conversion tool for different units where i want to display number in exponential form if they exceed 1000(for eg if I/O 10001 then O/P 1.000E+04, if I/O 1000.1 then O/P 1.000E+03).Also for numbers less than 1 (if I/O 0.001 then O/P 1.000E-03, if I/O 9.84203533290685E-04 then O/P 9.842E-04.

Sorry if the qusetion is very simple but I am new to VB .net and pretty bad with maths.

Answer 1

Try using String.Format:

Dim numberToDisplay As Decimal = 12345.00M
Dim formattedNumber As String = String.Format("{0:E3}", numberToDisplay)
'or:
Dim formattedNumber As String = numberToDisplay.ToString("E3")

Then you can use formattedNumber to display where you like.

More info: http://msdn.microsoft.com/en-us/library/dwhawy9k.aspx#EFormatString