Very Easy Question on Decimal Numbers

[WebServant]

Hi there,

From my program output i get a number like:

74474.3498393431

I want to show the first three digits after the dot. How can I do it please?

Thank you.

WebServant

[Atheist]

use the math namespace to round the value

math.Round(74474.3498393431, 3)

Will give you 3 numbers after the decimal

[WayneSpangler]

Using Format

Format(74474.3498393431, "####.###")
gives 74474.35 (rounds)

to assure 3 places always

Format(74474.3498393431, "####.000")
gives 74474.350

[WebServant]

i have this:

ERLCalc = 0.0
R = DCV
For i = 0 To tblCustomData.Rows.Count - 1
If tblCustomData.Rows(i)("CompleteTrax") <> 1 Then
If (tblCustomData.Rows(i)("CompleteTrax")) <> 99999 Then
LF = (30.0 - tblCustomData.Rows(i)("CompleteTrax") - 1.0) / 30.0
DF = Math.Pow(1.0 / (1.0 + R), tblCustomData.Rows(i)("CompleteTrax") - 1.0)
Else
LF = (1.0 / 30.0)
DF = Math.Pow(1.0 / (1.0 + R), 29.0)
End If
ERLCalc = ERLCalc + tblCustomData.Rows(i)("Length") * DF * LF

End If
Next
Return ERLCalc

Then this:

txtERL.Text = objLogic.dblERLCalc.ToString()


How can Iround it please?

[WayneSpangler]

Either of the methods above:

txtERL.Text = math.Round(objLogic.dblERLCalc.ToString(),3)

or

txtERL.Text = Format(objLogic.dblERLCalc,"####.000")

[jmcilhinney]

If you want to actually change the value of the number then use Math.Round. If you want to leave the actual number unaffected but display a string representation then use ToString("f3"), which means a fixed-point number with three decimal places. If you want thousand separators then use "n3" instead.

Numeric Format Strings

[WebServant]

Worked perfectly. Thanks all!

[jmcilhinney]

Don't forget to resolve your thread from the Thread Tools menu.