C#如何将textbox.text作为object(类中)变量导入？Windows窗体应用程序

private string textBoxText;

textBoxText = textBox.Text;

using System;
using System.Windows.Forms;

namespace WindowsFormsApp
{
    public partial class Form1 : Form
    {
        private string textBoxText;

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBoxText = textBox.Text;
            // 使用textBoxText变量进行其他操作
        }
    }
}