Passing DDL Value To Bit Field In SQL

I have a DDL with two values: 0 and 1. When I use





sqlcommand.Parameters.Add(New SqlParameter("@fld", SqlDbType.Bit, 1))


sqlcommandl.Parameters("@fld").Value = System.Boolean.Parse(DropDownList1.SelectedValue)





or





sqlcommand.Parameters.Add(New SqlParameter("@fld", SqlDbType.Bit, 1))


sqlcommandl.Parameters("@fld").Value = System.Convert.ToBoolean(DropDownList1.SelectedValue)





to insert the selected value in a sql2k database BIT field I am given this error:





System.FormatException: String was not recognized as a valid Boolean.





How can I solve this problem?