Convert string to datetime Using C#

How can i convert String like 20100102开发者_如何学Go into datetime in a formate of dd/MM/yyyy?

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var userdateformat = DateTime.ParseExact("20101020", "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);

Modify as you want to modify.

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var result = DateTime.ParseExact("20100102", "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);

Modify as needed.

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IFormatProvider culture = new CultureInfo("en-EN", false); // use your culture info
DateTime dt = DateTime.ParseExact(myDateTimeString, "yyyyMMdd", culture, DateTimeStyles.NoCurrentDateDefault); 

yyyyMMdd is input format here.

And then if you wish convert it to string:

String output = String.Format("{0:dd/MM/yyyy}", dt);

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You can use DateTime.ParseExact method

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string strStartDateMain = "20100102";
string strStartDateFinal = new DateTime(Convert.ToInt32strStartDateMain.Substring(0, 4)), Convert.ToInt32(strStartDateMain.Substring(4, 2)), Convert.ToInt32(strStartDateMain.Substring(6))).ToString("dd/MM/yyyy");