For loop in 15 min increments

Hi I am trying to run a for loop to generate a List<String>  for a dropdown list that will allow users to select a time value based on 15 min increments
.25, .50, .75, 1.0, 1.25   etc...

this is what I have so far but it keeps returning "0" 's

protected List<String> fill_ddlDuriation()
        {
            List<String> lstDuration = new List<String>();
            for(int i = 0; i < 720; i += 15)
            {
                i = i / 60;
                lstDuration.Add(i.ToString());
            }
                return lstDuration;
        }

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Scarlett72Asked:
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Atdhe NuhiuCommented:
try


protected List<String> fill_ddlDuriation()
    {
      List<String> lstDuration = new List<String>();
      for (decimal i = 0; i < 720; i += 15)
      {
        i = i / 60;
        lstDuration.Add(i.ToString());
      }
      return lstDuration;
    }

you won't get fractions in an integer variable
0
Phillip BurtonDirector, Practice Manager and Computing ConsultantCommented:
It's because of line 6

i = i / 60;
               
You are looping by i (line 4). So first time, i = 15.

Then i get divided by 60, so i = 15/60 = 0.25 (rounded down to 0).

That figure gets carried forward.

Instead of using i in lines 6 and 7, use j:

j = i / 60;
lstDuration.Add(j.ToString());

(Make sure j is a decimal, not an integer)
0

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Shaun KlineLead Software EngineerCommented:
Your loop variable (i) is defined as an integer. When you divide an integer by an integer, your result will be an integer, especially when you are storing the result in an integer.

Store your result in a double and cast the two parts of the division to doubles:

double result = (double) i / 60.0;
0
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it_saigeDeveloperCommented:
You could also use linq:
using System;
using System.Linq;
using System.Collections.Generic;

namespace EE_Q28570067
{
	class Program
	{
		private readonly static List<double> durations = new List<double>();

		static void Main(string[] args)
		{
			durations.AddRange((from i in Enumerable.Range(0, 720) where i % 15 == 0 select ((double)i / 60f)));
			foreach (var duration in durations)
				Console.WriteLine(string.Format("Interval: {0}", duration));
			Console.ReadLine();
		}
	}
}

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Produces the following output:Capture.JPG
-saige-
0
Scarlett72Author Commented:
Hi below was my solution, thanks to all for your feedback, not very familiar with linq syntax it_saige, but thanks for your input.

protected List<String> fill_ddlDuriation()
        {
            List<String> lstDuration = new List<String>();
            for(int i = 15; i < 735; i += 15)
            {
                Decimal minResult = (i*100) / 60;
                minResult = Math.Truncate(minResult) / 100;    
                lstDuration.Add(minResult.ToString("F"));
            }
                return lstDuration;
        }
0
Atdhe NuhiuCommented:
Thanks
0
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