mask test box explanation

[judithSampathwa]

hi there,

can some one explain what is happening the below code:

if (amt == "0.0000")
                    txtPAmt.Text = "";
                else
                {
                    decimal d;
                    decimal.TryParse(amt, out d);
                    txtPAmt.Text = d.ToString("$0000000000.00");
                }

thankxxx

[Ketsuekiame]

What do you think is happening?

(I'm not being facetious, I just want to try and get you to think about it)

[judithSampathwa]

What do you think is happening?

(I'm not being facetious, I just want to try and get you to think about it)

if u enter 1.23 it will be displayed as $0000000001.23

how does it work,

thankxx

[Ketsuekiame]

Ok, the "ToString" method can take a string argument to act as a formatter.

So for every "0" it means it expects a number, if no number is given, it will place a 0 there. If there is a number, the 0 is replaced with it. So your parameter is read as d.ToString("Create a number that is 10 digits long with two decimal places and overwrite it with the value I contain")

[nick.crane]

These two links should help you understand what you can put in the ToString method and how this effects the resulting string.
Standard Numeric Format Strings
Custom Numeric Format Strings

Of particular note for you is probably the standard format code "C".

[Ketsuekiame]

I refrain from using C as it puts it in the local culture currency. It's very easy to forget to switch cultures ^^

I use #,##0.00 with the correct currency symbol for whichever currency it is.

Typically though, you are correct, and you should format with 'C' and the correct culture.