DateTime Formating Issue In ASP.NET

Convert between 'dd/MM/yyyy' & 'MM/dd/yyyy'

You have to initialized  the Cultureinfo under the globalization namespace.

1)  For Convert to "MM/dd/yyyy" :

 IFormatProvider cl = new System.Globalization.CultureInfo("en-GB", true);

DateTime dts = new DateTime();
 dts = Convert.ToDateTime(t1.Text, cl);

2) For Convert to "dd/MM/yyyy" :

 IFormatProvider cl = new System.Globalization.CultureInfo("en-US", true);
DateTime dts = new DateTime();
 dts = Convert.ToDateTime(t1.Text, cl);