I have a string array and I want to perform some operation when it is of type datetime and if it is not other operation I want to perform.

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I have a array of string .which have two types of values Double and DateTime .And i want to perform some operation when at the first index Datetime comes else other operation.

string receivedData="77.6867#25.437#2018.01.08 14:58:28#12.8241#77.6867#25.375#2018.01.08 14:58:28#12.8241#77.6867#25.437#2018.01.08 14:58:346#25.437#2018.01.08 15:03:20#12.8241#77.6866#25.437#2018.01.08 1#25.437#2018.01.08 14:24:06#12.8241#77.6866#25.312#2018.01.08 14:24:06#12.8241#77.6866#25.375#2018.01.08 14:24:06#12.8241#77.6866#25.375#2018.01.08 14:24:06#12.8241#77.6866#25.375#2018.01.08 14:24:06#12.8241#77.6866#25.375#2018.01.08 14:24:06#12.8241#77.6866#25.375#2018.01.08 14:24:12#12.8241#77.6866#25.375#2018.01.08 14:24:12#12.8241#77.6866#25.375#2018.01.08"
After Removing the delemeter .I always want the 2nd element of the array is of Datetime.

What I have tried:

Thread.Sleep(10000);
SerialPort sp = (SerialPort)sender;
serialPortData = sp.ReadExisting();
int indx = serialPortData.IndexOf("#");
serialPortData = serialPortData.Remove(0, indx + 1);
string[] Data = serialPortData.Split(new string[] { "#" },
StringSplitOptions.RemoveEmptyEntries);
while(Data[1].GetType()!=typeof(System.DateTime))
{
Data = Data.Skip(1).ToArray();
}
this code is not showing any error.
when i put "==" inside while loop it exiting the loop for all values.
when i Put "!=" inside while loop it keep on executing the same loop till last.
thank u in advance.

Posted 22-Jan-18 1:06am

Member 13488719

Updated 22-Jan-18 1:47am

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Dotnet_Dotnet 22-Jan-18 7:33am

Sir store in a string array by split func that u did .
into p =0,I=0;
While(I<array.length)
{
if(p==2)
{
Ur work
P=0
}
I++;
}

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Jochen Arndt · Answer 1 · 2018-01-22T01:47:00

Data is a string array so that the value returnd by Data[1].GetType() is never the same as typeof(System.DateTime).

You have to try to convert the strings to a double and/or DateTime to check what kind of data are received. See
Double.TryParse Method (String, NumberStyles, IFormatProvider, Double) (System)[^] and DateTime.TryParseExact Method (String, String, IFormatProvider, DateTimeStyles, DateTime) (System)[^] :

C#

DateTime dt;
if (DateTime.TryParseExact(Data[1], "yyyy.MM.dd hh:mm:ss", 
    CultureInfo.InvariantCulture, DateTimeStyles.None, dt)) 
{
    // Is a DateTime
}

double dVal;
// en-US for the period as decimal point
CultureInfo enUS = new CultureInfo("en-US"); 
// You might need to add styles or change it (e.g. for leading sign)
if (Double.TryParse(Data[1], NumberStyles.AllowDecimalPoint, enUS, dVal)) 
{
    // Is a double
}

johannesnestler · Answer 2 · 2018-01-22T01:22:00

after

string[] Data = serialPortData.Split(new string[] { "#" },

you have string data - so it will never have the type datetime.
I'd suggest just go through each entry and try to parse it into a DateTime

foreach(string strData in Data)
{
.... for every second element or each element that could be converted
DateTime dtData = DateTime.Parse(strData); // Or use tryparse if not shure
}

GenJerDan · Answer 3 · 2018-01-22T01:27:00

I would just iterate through the parsed string and use DateTime.TryParse(Data[x]) - if it parses do the DateTime action, if it doesn't, do the Double action. This assumes the parsed string will only contain DateTimes or Doubles, because anything other than a DateTime will be treated as a Double.

F-ES Sitecore · Answer 4 · 2018-01-22T01:37:00

Use DateTime.ParseExact to find out if the text can be converted to datetime given a specific format.

DateTime dt;
while (DateTime.TryParseExact(Data[1], "yyyy.MM.dd HH:mm:ss", System.Globalization.CultureInfo.CurrentCulture, System.Globalization.DateTimeStyles.None, out dt))

You probably have other logic errors in your code though.

I have a string array and I want to perform some operation when it is of type datetime and if it is not other operation I want to perform.

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