check if date time string contains time

Question

I have run into an issue. I\'m obtaining a date time string from the database and and some of these date time strings does not contain time. But as for the new requirement every

Answer 1

Combining the answers of Guru Kara and Patipol Paripoonnanonda with the .net globalisation API results in:

bool HasExplicitTime(DateTime parsedTimestamp, string str_timestamp)
{
    string[] dateTimeSeparators = { "T", " ", "@" };
    string[] timeSeparators = {
        CultureInfo.CurrentUICulture.DateTimeFormat.TimeSeparator,
        CultureInfo.CurrentCulture.DateTimeFormat.TimeSeparator,
        ":"};

    if (parsedTimestamp.TimeOfDay.TotalSeconds != 0)
        return true;

    string[] dateOrTimeParts = str_timestamp.Split(
            dateTimeSeparators,
            StringSplitOptions.RemoveEmptyEntries);
    bool hasTimePart = dateOrTimeParts.Any(part =>
            part.Split(
                    timeSeparators,
                    StringSplitOptions.RemoveEmptyEntries).Length > 1);
    return hasTimePart;
}

This approach:

• detects explicit midnight times (e.g. "2015-02-26T00:00");
• only searches the string when TimeOfDay indicates midnight or no explicit time; and
• finds explicit midnight times in local format and any non midnight time in any format that .net can parse.

Limitations:

• explicit midnight times in non culture local format are not detected;
• explicit midnight times with less than two parts are not detected; and
• less simple and elegant than the approaches of Guru Kara and Patipol Paripoonnanonda.