Question

DateTime? billDateFrom = string.IsNullOrWhiteSpace(txtBillDateFrom.Text) ? null : (DateTime?)DateTime.Parse(txtBillDateFrom.Text);

txtBillDateFrom.Text equals “05/26/2011”. (26 may 2011)

This code throws an error “String was not recognized as a valid DateTime” only in a web application. In a console application it works good.
Why? Does it depend on locale?

Answer 1

Yes, the behavior of Parse() depends on the current thread’s culture. You can use ParseExact() to make that behavior consistent, regardless of that culture:

DateTime.ParseExact(txtBillDateFrom.Text, "d", CultureInfo.InvariantCulture)