How to parse this string to Datetime C#

Question

Hi,

I have the following code:

public DateTime? ParseDateTime(
    string dateToParse,
    string[] formats = null,
    IFormatProvider provider = null,
    DateTimeStyles styles = DateTimeStyles.AssumeLocal)
{
    string[] CUSTOM_DATE_FORMATS =
    {
        "yyyy-MM-ddTHH:mm:ss",
        "yyyy-MM-ddTHH:mm:ssz",
        "yyyy-MM-dd"
    };

    if (formats == null)
    {
        formats = CUSTOM_DATE_FORMATS;
    }

    foreach (var format in formats)
    {
        DateTime validDate;
        if (format.EndsWith("Z"))
        {
            if (DateTime.TryParseExact(dateToParse, format,
                provider,
                DateTimeStyles.AssumeUniversal,
                out validDate))
            {
                return validDate;
            }
        }
        else
        {
            if (DateTime.TryParseExact(dateToParse, format,
                provider, styles, out validDate))
            {
                return validDate;
            }
        }
    }

    return null;
}

Input: dateToParse = 2018-10-02T18:36:12

 

Output: null 

 

 So how to fix it?

Thank you.