Reduce Numbers after point vb.net

Question

I am trying to reduce numbers

Dim x As String = 7 + 5 + 5 / 3
TextBox1.Text = x

the result will be 1.66666666666667.
I want to reduce it to exactly 1.6.

I tried this:

Dim x As String = 5
TextBox1.Text = String.Format("{0:N}", x / 3)

that reduces it to 1.667.

But I want to reduce it to only one number after point, like 1.6

Do you want to round the number itself or print it in a short way? — GSerg, Feb 01 '17 at 16:05
Please see [Difference between Math.Floor() and Math.Truncate()](http://stackoverflow.com/a/580252/1115360) and then let us know if you change your mind about 1.6666... being shown as 1.6, and what you would like to happen for negative numbers. — Andrew Morton, Feb 01 '17 at 16:10

score 3 · Accepted Answer · answered Feb 01 '17 at 16:22

You can use Math.Truncate:

Dim d As Decimal = 5 / 3
TextBox1.Text = (Math.Truncate(d * 10) / 10).ToString

Also, consider turning option strict on because you shouldn't be feeding equations into text properties like that...and you may want to clarify that first equation in your question because it doesn't evaluate to 1.66666666666667 anyway

score 0 · Answer 2 · answered Feb 01 '17 at 20:46

0

You can also use Math.Round

TextBox1.Text =  Math.Round(7 + 5 + 5 / 3, 2)

Where 2 is the number of decimals that you want to show.

answered Feb 01 '17 at 20:46

Juanche

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Reduce Numbers after point vb.net

2 Answers2