无法理解我错在哪里，数据库没有存储记录。请帮忙

问题描述

private void button_Pass_Click(object sender, EventArgs e)
        {
            SqlConnection con1 = new SqlConnection("Data Source=JAYI-PC\\SQLEXPRESS;Initial Catalog=db-ub;Integrated Security=True");
            con1.Open();
            Image img = pictureBox_UB.Image;
            byte[] arr;
            ImageConverter converter = new ImageConverter();
            arr = (byte[])converter.ConvertTo(img, typeof(byte[]));
            //SqlCommand cmd1 = new SqlCommand("Insert into Visitors (Image) values('"+arr+"')");
            //cmd1.ExecuteNonQuery();

            string s = "";
            if (comboBox_TOWHOM.SelectedIndex >= 0)
            s = comboBox_TOWHOM.Items[comboBox_TOWHOM.SelectedIndex].ToString();

            string c = "";
            if (comboBox_color.SelectedIndex >= 0)
            c = comboBox_color.Items[comboBox_color.SelectedIndex].ToString();

            string n = "";
            if(numericUpDown_Person.Value >= 0)
            n = numericUpDown_Person.Value.ToString();

            string prps = string.Empty;
            if(radioButton_OFFICIAL.Checked)
            {
                prps = "Official";
            }
            else if(radioButton_PERSONAL.Checked)
            {
                prps = "Personal";
            }

            SqlCommand cmd1 = new SqlCommand("Insert into Visitors(Id,Visitor Name,Organisation Name,Phone No,No of Person,Whom to Visit,Purpose,Color Code,Day In,Time In, Image)values("+textBox_Id.Text+",'" + textBox_NameV.Text + "','" + textBox_Org.Text + "'," + textBox_Phn.Text + ",'" + n + "','" + s + "','" + prps + "','" + c + "','" + textBox_Dayin.Text + "','" + textBox_timeR.Text + "'," + arr + ")",con1);
            cmd1.ExecuteNonQuery();
            MessageBox.Show("Record has been inserted");
            con1.Close();

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