Nachdem Sie das Anzeigeformular auf der Registerkarte „C# TabContral' geladen haben, implementieren Sie ein Testcodebeispiel für die unidirektionale Parameterübertragung (Bild).

 private void generatefm_Click(object sender, EventArgs e)
        {
            tbMobile = new TabPage("中国");

            tbMobile.Name = "tbmobile";
            tabControl1.Controls.Add(tbMobile);

            Form form2 = new Form2(textBox1);             //传递textBox1过去
  
            // Form2 form = new Form2();  
            form2.TopLevel = false;
            form2.BackColor = Color.White;
            form2.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;

            form2.FormBorderStyle = FormBorderStyle.None;
            form2.Show();
            tbMobile.Controls.Add(form2);

            tabControl1.SelectedIndex = 2;
        }

    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        public Form2(TextBox ts)
        {
            InitializeComponent();

            textBox2.Text = ts.Text;
        }

      private void button1_Click(object sender, EventArgs e)
        {
            form2.textBox2.Text = textBox1.Text;
        }

        private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            form2.textBox2.Text = textBox1.Text;          
        }

 public partial class Form1 : Form
    {
        private TabPage tbMobile = null;  
        private TabPage tbUnion = null;

        Form2 form2 = null;        //先在这里声明，便于加载后引用

        public Form1()
        {
            InitializeComponent();
        }


        private void button1_Click(object sender, EventArgs e)
        {
            form2.textBox2.Text = textBox1.Text;            //这里就可以引用了，form2的textBox2必须先设置成public
        }

        private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            form2.textBox2.Text = textBox1.Text;            //切换选项卡时也获取最新的输入参数
        }

        private void generatefm_Click(object sender, EventArgs e)
        {
            tbMobile = new TabPage("中国");

            tbMobile.Name = "tbmobile";
            tabControl1.Controls.Add(tbMobile);

            form2 = new Form2(textBox1);

            // Form2 form = new Form2();  
            form2.TopLevel = false;
            form2.BackColor = Color.White;
            form2.Anchor = AnchorStyles.Top | AnchorStyles.Left | AnchorStyles.Right;

            form2.FormBorderStyle = FormBorderStyle.None;
            form2.Show();
            tbMobile.Controls.Add(form2);

            tabControl1.SelectedIndex = 2;
        }
    }