c# - Deduce all characters behind decimal number, with leading 0's

itemprop="text">

If I have an input string,
input has Three or more decimals I want the string to be handled by
a separate if-loop.

I've created the following console
program for this purpose, where the if-loop is entered if (the
first constraint) there is a decimal point, . in the string and
(the second constraint) if the amount of decimals are Three or
more.

using
            System;

namespace Test
{
 class
            Program
 {
 static void Main(string[] args)

            {

 string input = "0.065";
 string
            output;

 Console.WriteLine(input.ToString()); // (1)

            Console.WriteLine(input.ToString().IndexOf(".")); // (2)

            Console.WriteLine(input.ToString().Substring(input.ToString().IndexOf("."))); //
            (3)

 if (Convert.ToInt32(input.IndexOf('.')) != -1 &&
            
 Convert.ToInt32(input.Substring(input.IndexOf('.') + 1).Length) >=
            3)
 {

 output = input.Substring(input.IndexOf('.') +
            1);
 Console.WriteLine(Convert.ToInt32(output));
 }

            Console.ReadLine();
 }

            }
}

This
yields the expected result, i.e.

(1)
prints 0.065,

(2)
prints 1,

(3) prints
.065

and (4) prints
3.

My issue is that
when I remove the hard coded string value, input = "0.065" and
replace it with

input =
            Row["Price"].ToString();

where
Row["Price"].ToString(); is a value from a XML file, which also
has value 0.065 I get the following prints from
console:

(1) yields
0.065

(2) yields
-1 (should be 1 as there is a .
present)

(3) yields
0.065 (should be .065)

and (4) is not printed, because the
if constraints are not
met.

Does anyone have any idea why this is? I am
new to C#, but I figure that since input is of type
string in both cases, there shouldn't be any difference?
Especially as I apply ToString() to my new string
input?

itemprop="text">

class="normal">Answer

Replace
the , with an . in that string when
you do input =
Row["Price"].ToString();.

Replace
function is input = Row["Price"].ToString().Replace(",",
".");