Remove hardcoded days from a IF statement

Hi there

Wonder if you can help me?

I have the following code:


int todaysDay = DateTime.Today.Day;

if (todaysDay == 1 || todaysDay == 17 || todaysDay == 28 || someV = false)
{
    // do something
}

The problem with that is I've had to hardcode the days i.e. 1,17,28 in the IF statement. Can someone please help me in getting the values i.e. 1,17,28 (or it could be more days) into a variable.

Something like this

string daysToSearch = "1,17,28"; // Please note, I will be getting the string "1,17,28" from a SQL field. Having got the "1,17,28" from SQL, I can then use this in the IF statement

Hope that makes sense?
Thanks
Mousemat24

Having

mousemat24Asked:
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Put a leading and trailing comma on your date values in your string:

    string daysToSearch = ",1,17,28,"

Then you can use string.IndexOf():

    if (daysToSearch.IndexOf("," + DateTime.Today.Day.ToString() + ",") >=0 || someV == false)
   {

   }
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mousemat24Author Commented:
Thanks Idle_Mind for replying to me so quickly, just one question, why do you say

"Put a leading and trailing comma on your date values in your string:"? The following code works without the trailing comma

string daysToSearch = "1,17,28,21";

if (daysToSearch.IndexOf(DateTime.Today.Day.ToString()) >= 0)
{

}

Thanks
Mousemat24
0
Mike TomlinsonMiddle School Assistant TeacherCommented:
Because you will get "false positives"...

What if you search for the value of "2"?

String.IndexOf() will return a value because it is present in both "28" and "21" even though the value of just "2" is not present.

This is why I am surrounding the Day.ToString() value in commas:

    "," + DateTime.Today.Day.ToString() + ","

and why you need the leading and trailing commas in the days string so that you can get a match on the first and last entries in the string.
0
mousemat24Author Commented:
Ohhh right, thank you so much for help me, and having the time to explain this to me!!!

Your a star

Mousemat24
0
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