String was not Recognized as a Valid Datetime

CultureInfo :

It’s Provides information about a specific culture.The information includes the names for the culture, the writing system, the calendar used, the sort order of strings, and formatting for dates and numbers.

Code :

using System.Globalization;//namespace
DateTime From = DateTime.ParseExact(txtFrom.Text, "dd/MM/yyyy", CultureInfo.InvariantCulture); 

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