How to get values of Form1.cs into another .cs file

Following is my Form1, Here I am Passing Form1 Textbox value to Form2 TextBox.

I want to send the Form1 Value to Form2 textbox as

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace ValuesPassingFromformtoform

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

      

        private void button1_Click(object sender, EventArgs e)

        {

            Form2 f2 = new Form2(textBox1.Text);           

            f2.Show();

        }

    }

}

This is my Form2, Whenever I clicked on Form1 button, textbox value will send to the Form2's Textbox value.

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace ValuesPassingFromformtoform

{

    public partial class Form2 : Form

    {

        public Form2(string value)

        {

            InitializeComponent();

            textBox2.Text = value;

        }

      

    }

}