Adding sum button to chart for creating user control

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C#

I want customize chart in C# and want adding two button to it for zoom in and zoom out.
I do it and adding 2 button and added in visual studio toolbox.
but I have a problem.
after adding this new control to my projects I can not see some main future of chart in properties like ChartAreas, Legends, Series and ... .

Thanks

What I have tried:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;

namespace DemoCustomGraph
{
    public partial class customGraph : UserControl
    {
        public customGraph()
        {
            InitializeComponent();
        }


        private void btnScrollOnOff_Click(object sender, EventArgs e)
        {
            if(chart1.ChartAreas["ChartArea1"].CursorX.AutoScroll == false)
            {
                chart1.ChartAreas["ChartArea1"].CursorX.AutoScroll = true;
                btnScrollOnOff.Text = "Scroll On";
            }
            else
            {
                chart1.ChartAreas["ChartArea1"].CursorX.AutoScroll = false;
                btnScrollOnOff.Text = "Scroll Off";
            }
        }
    }
}