Interaction Between Content Page and Master Page

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class ContentPage : System.Web.UI.Page
{
    //raise button click events on content page for the buttons on master page
    protected void Page_Init(object sender, EventArgs e)
    {
        Master.PropertyMasterButton1.Click += new EventHandler(PropertyMasterButton1_Click);
        Master.PropertyMasterButton2.Click += new EventHandler(PropertyMasterButton2_Click);
    }

    //Send text from Master Box 1 to Content Box 1
    protected void PropertyMasterButton1_Click(object sender, EventArgs e)
    {
        //use one of the options below
        //option 1. use master page public property
        txtContentBox1.Text = Master.PropertyMasterTextBox1.Text;

        //option 2. Call master page method
        txtContentBox1.Text = Master.GetMasterbox1Value();

        //option 3. use FindControl() method of Master object
        txtContentBox1.Text = ((TextBox)Master.FindControl("txtMasterBox1")).Text;
    }
    //Get text from Content Box 2 to Master Box 2
    protected void PropertyMasterButton2_Click(object sender, EventArgs e)
    {
        //use one of the options below
        //option 1. User master page's property
        Master.PropertyMasterTextBox2.Text = txtContentBox2.Text;

        //option 2. call master page's method
        Master.SetMasterBox2Value(txtContentBox2.Text);
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        
    }

    //send text from Content Box 1 to Master Box 1
    protected void btnContentButton1_Click(object sender, EventArgs e)
    {
        //use one of the options below
        //option 1. use master page public property
        Master.PropertyMasterTextBox1.Text = txtContentBox1.Text;

        //option 2. alternativly, call Master page public method to assign a value to the control on master page
        Master.SetMasterBox1Value(txtContentBox1.Text);
    }
    //Get text from Master Box 2 and display it in Content Box 2 
    protected void btnContentButton2_Click(object sender, EventArgs e)
    {
        //use one of the options below
        //option 1. access master page's TextBox through a public property exposed on mater page
        txtContentBox2.Text = Master.PropertyMasterTextBox2.Text;

        //option 2. Call master page public method
        txtContentBox2.Text = Master.GetMasterBox2Value();

        //option 3. use FindControl() method of Master object
        txtContentBox2.Text = ((TextBox)Master.FindControl("txtMasterBox2")).Text;
    }

    
 
}