convert numbers decimal c#

Question

I have a problem in converting numbers.

I have :

private decimal amount { get; set; }

When I write in a textbox the value 10.15, the conversion is good, it converts me to 10,15

But when I write 10 or 35 it's not 10,00 or 35,00 but the value it's the same 10 and 35

How can I convert it ?

Thanks

You're looking at string representations, it really doesn't matter if the variable has the 0's or not — Sayse, Feb 09 '16 at 15:00
Possible duplicate of [Using String Format to show decimal upto 2 places or simple integer](http://stackoverflow.com/questions/6951335/using-string-format-to-show-decimal-upto-2-places-or-simple-integer) — Alexander Derck, Feb 09 '16 at 15:01
Related: [Preventing double.Parse from removing trailing zeros after decimal place?](http://stackoverflow.com/q/4415596/1324033) — Sayse, Feb 09 '16 at 15:03
I cannot show you the textbox cause it's a special textbox in a framework (Textbox.UIDecimal) so it converts everything but not the numbers like 10, 35, 85, 135... — Memo, Feb 09 '16 at 15:06

D Stanley · Answer 1 · 2016-02-09T15:12:09.097

A decimal is just a number - it doesn't have a format.

You specify the format of a number when you display (or parse) it - if you're just looking at the value in the debugger, implicitly casting to string (e.g. setting the .Text property of a control), or calling .ToString without specifying a format, then you're implicitly using the default format of the system (including any cultural specifics). For decimal that default format is G (General), which shows the number in the most compact form possible. So if there is no fractional part to the decimal value, no decimal places are shown.

If you want to specify a particular format when you display the string, then use either string.Format or .ToString

txtValue.Text = amount.ToString("N2");

or use any custom formatting you desire.

Note that some UI controls (perhaps including your TextBox.UIDecimal) have a "Format" property to specify the format that is used when the value is displayed. In that case, you can set the format to N2 in the designer or in code-behind.

It's ok but when I write 100 it's 10,00 – Memo Feb 09 '16 at 15:18 — Memo, Feb 09 '16 at 15:18

convert numbers decimal c#

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