What is the correct way to concatenate these elements?
Environment: C#-WinForm-Desktop.
In my app, I have a text file called config.ini
. This file has values with this nomenclature:
csv_month_hour=value
The data are thus:
[csv]
csv_01_01=value // 24 hours a day in January
csv_01_02=value
csv_01_03=value
.
csv_02_01=value // 24 hours a day in February
csv_02_02=value
csv_02_03=value
.
// and so on
My app has this method called:
private void getMonthHour()
{
DateTime Xdt = DateTime.Now;
int Xmonth = Xdt.Month;
int Xhour = Xdt.Hour;
if (File.Exists("config.ini"))
{
IniFile ini = new IniFile("config.ini");
m3h = Convert.ToDouble(confg.csv["csv_" + Xmonth.ToString + "_" + Xhour.ToString]);
}
}
This method is called every seconds in timer_tick
to check the month and time to use the corresponding value.
I need to know how to concatenate this: m3h = Convert.ToDouble(confg.csv["csv_"+Xmonth.ToString+"_"+Xhour.ToString]);
An example of the code would be:
if (Xmonth==1&&Xhour==1){m3h = Convert.ToDouble(confg.csv.csv_01_01);}
else if (Xmonth==1&&Xhour==2){m3h = Convert.ToDouble(confg.csv.csv_01_02);}
else if (Xmonth==1&&Xhour==3){m3h = Convert.ToDouble(confg.csv.csv_01_03);}
// csv_month_hour in this case 01 is January.
else if (Xmonth==2&&Xhour==1){m3h = Convert.ToDouble(confg.csv.csv_02_01);}
// And so on, until December (12).
Putting aside the invalid syntax/compiler error from your method calls in your code, I suspect you're building the string but can't get the leading 0
in front of digits 0-9. So when Xmonth
and Xhour
are less than 10, your string is being built as "csv_1_1"
instead of your intended "csv_01_01"
.
To instruct the ToString
method to include a leading zero when needed, you can supply a custom numeric format string "00"
(see the first entry in the link for "Zero placeholder").
Try using Xmonth.ToString("00")
and Xhour.ToString("00")
:
Monitor.malyt.m3h = Convert.ToDouble(confg.csv["csv_" +
Xmonth.ToString("00") + "_" +
Xhour.ToString("00")]);
This will output the values of Xmonth
and Xhour
with a single leading zero where needed.
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