Question

I want to remove all the decimal points from a decimal value and add a ‘%’ at the end.
I am trying with the following code.

<%:string.Format("{0:0}",i.discount) %>

this makes 10.0000 to 10.
But is there any way that i can put a ‘%’ after 10??

EDIT:
I am showing data in a table. Some rows have discount value and some rows does not.
SO my query returns null or the discount value.

I only want to show the (%) in those row, that have discount value. I do not want to show only (%) in those rows that does not have any discount value.

Hope it explains the question better.

Answer 1

Try

<%:i.discount.ToString("P0") %>

Alternatively,

<%:string.Format("{0:P0}", i.discount) %>

Note that this multiplies the number by 100, making 10.00 into 1000%; this may not be what you want.

EDIT: Since you indicate in your comment that this is not what you want, try one of the following:

<%:(i.discount / 100.0).ToString("P0") %>
<%:string.Format("{0:P0}", i.discount / 100.0) %>

These should leave the value blank if i.discount is null.

For formatting a single numeric value, ToString is marginally more efficient than string.Format, because string.Format has a bunch of overhead to parse the format string out of the curly braces and then pass it to ToString.