How to add row to datagrid view manually

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C#

I have a datagridview that is displayed on the C# windows form.
I want to add new row simultanously to the dgv when user insert some record .
Please help me .....

private void btnInsert_Click(object sender, EventArgs e)
        { 
            try
            {
            SqlConnection scon = new SqlConnection("Data Source=ASIC-02\\SQLEXPRESS;Initial Catalog=Student;Integrated Security=True");
            scon.Open();
            SqlCommand scom = new SqlCommand("rec",scon);
            scom.CommandType = CommandType.StoredProcedure;
            scom.Parameters.Add("@Name", SqlDbType.VarChar).Value = txtName.Text;
            scom.Parameters.Add("@Reg", SqlDbType.VarChar).Value = txtReg.Text;
            scom.Parameters.Add("@Dep", SqlDbType.VarChar).Value = txtDep.Text;
            dataGridView1.Rows.Add(txtName.Text, txtReg.Text, txtDep.Text);
            scom.ExecuteNonQuery();
            MessageBox.Show("Information Successfully Inserted");
            scon.Close();
            this.Refresh();
            }
             catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }         
        }