C#窗体动态传值问题

来源：互联网发布：长沙乐知英语编辑：程序博客网时间：2024/05/18 03:21

主要源代码（开发平台为VC#2005）。

.点击Form1的button1 打开Form2
再点击Form2的button2
在button2_Click事件中通过this.Owner将Form2的textBox2的值设置给Form1的textBox1
并关闭Form2

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 frm2 = new Form2();
            frm2.Show(this);//或 frm2.ShowDialog(this);

            ////或者
            //Form2 frm2 = new Form2();
            //frm2.Owner = this;
            //frm2.Show();//或 frm2.ShowDialog();
        }
    }

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

        private void button2_Click(object sender, EventArgs e)
        {
            Form1 frm1 = (Form1)this.Owner;
     //注意如果textBox1是放在panel1中的则先找panel1 再找textBox1
            ((TextBox)frm1.Controls["textBox1"]).Text = this.textBox2.Text;
            this.Close();
        }
    }

5.点击Form1的button1 打开Form2
再点击Form2的button2
    在button2_Click事件中通过this.Owner及调用父窗体Form1的公开属性或方法
                          将Form2的textBox2的值设置给Form1的textBox1
    并关闭Form2

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public string TextBox1Text
        {
            set { this.textBox1.Text = value; }
            get { return this.textBox1.Text; }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form2 frm2 = new Form2();
            frm2.Show(this);//或 frm2.ShowDialog(this);

            ////或者
            //Form2 frm2 = new Form2();
            //frm2.Owner = this;
            //frm2.Show();//或 frm2.ShowDialog();
        }
    }

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

        private void button2_Click(object sender, EventArgs e)
        {
            Form1 frm1 = (Form1)this.Owner;
            frm1.TextBox1Text = this.textBox2.Text;
            this.Close();
        }
    }