I have a date in the following format 10/16/2018 or this is in MM / DD / YYYY format so it comes as a parameter, but this date is as string and I need to convert it to a datetime, try the following:
string fecha = "10/16/2018";
DateTime dt = DateTime.Parse(fecha);
And this error is generated: the string can not be recognized as a valid datetime value, please help, however when the date is in DD / MM / YYYY format if it works, but I must have the date in the format above. Thanks
What you are looking for is a conversion of string to datetime with the format MM / dd / yyyy, for this it is necessary that you establish the correct format such as this MM / dd / yyyy , I leave an example:
The library is required: using System.Globalization;
string dateString = "10/16/2018";
string format = "MM/dd/yyyy";
DateTime dateTime = DateTime.ParseExact(dateString, format, CultureInfo.InvariantCulture);
Console.WriteLine(dateTime);
You can also see it working on this rextester link
To solve your problem you have to use DateTime. ParseExact or DateTime.TryParseExact , both allow you to enter the format of the incoming string
string fecha = "10/16/2018";
string formato = "MM/dd/yyyy" //MM representa Mes, dd día e yyyy año
After defining these two data, you could do the following
bool result = DateTime.TryParseExact(fecha, formato, null, System.Globalization.DateTimeStyles.None, out DateTime dt);
//En caso de que result sea verdadero, implica que la fecha alojada en el string es válida.
if(result)
{
Console.WriteLine("La fecha es correcta y es {0}", dt.ToShortDateString());
}
//Caso contrario, la fecha es invalida.
else
{
Console.WriteLine("El formato de la fecha ingresada es incorrecta.");
}
Use this conversion: you must add CultureInfo because with the American dates the months use them at the beginning and it may give you an error.
DateTime dt = Convert.ToDateTime("10/16/2018", CultureInfo.InvariantCulture);
Do not forget to add the namespace using System.Globalization;
Greetings