Additional information: conversion failed when converting date and/or time from character string.

An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll

Additional information: Conversion failed when converting date and/or time from character string.

cmd = new SqlCommand();
            cmd.Connection = con;
            cmd.CommandType = CommandType.Text;
            cmd.CommandText = "INSERT INTO [dbo].[faculty] ([fac_id], [Fname], [Lname], [gender], [dob], [email], [country], [city], [hire_date], [salary], [commission], [fac_rank], [crs_id]) VALUES (@fac_id, @Fname, @Lname, @gender, @dob, @email, @country, @city, @hire_date, @salary, @commission, @fac_rank, @crs_id)";

            cmd.Parameters.AddWithValue("@fac_id", fac_idTextBox.Text);
            cmd.Parameters.AddWithValue("@Fname", fnameTextBox.Text);
            cmd.Parameters.AddWithValue("@Lname", lnameTextBox.Text);
            cmd.Parameters.AddWithValue("@gender", genderTextBox.Text);

            cmd.Parameters.AddWithValue("@dob", DateTime.Parse(dobDateTimePicker.Text));
            cmd.Parameters.AddWithValue("@email", emailTextBox.Text);
            cmd.Parameters.AddWithValue("@country", countryTextBox.Text);
            cmd.Parameters.AddWithValue("@city", cityTextBox.Text);

            cmd.Parameters.AddWithValue("@hire_date", DateTime.Parse(hire_dateDateTimePicker.Text));
            cmd.Parameters.AddWithValue("@salary", salaryTextBox.Text);
            cmd.Parameters.AddWithValue("@commission", commissionTextBox.Text);
            cmd.Parameters.AddWithValue("@fac_rank", fac_rankTextBox.Text);
            cmd.Parameters.AddWithValue("@crs_id", crs_idTextBox.Text);

            con.Open();
            cmd.ExecuteNonQuery();
            con.Close();