winfrom窗体 子窗体和父窗体实时传值。

using System;
using System.Collections.Generic;
using System.Text;

namespace WF.ThreadFrom
{

    public delegate void TextChangedEventHander(object sender,TextChangedEventEventArgs e);

    public class TextChangedEventEventArgs:EventArgs
    {
        private string msg;

        public string Msg
        {
            get { return msg; }
        }

        public TextChangedEventEventArgs(string message)
        {
            this.msg = message;
        }
    }
}


using System;
using System.Collections.Generic;
using System.Text;

namespace WF.ThreadFrom
{
    public delegate void SelectionChangedEventHandler(object sender, SelectionChangedEventArgs e);

    public class SelectionChangedEventArgs:EventArgs 
    {
        private string m_selection;

        //本属性用于传递事件数据
        public string Selection
        {
            get { return m_selection; }
        }

        public SelectionChangedEventArgs(string selection)
        {
            m_selection = selection;
        }
    }
}


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WF.ThreadFrom
{
    public partial class Form2 : Form
    {
        public event SelectionChangedEventHandler SelectionChanged;

        public event TextChangedEventHander TextChanged;

        public Form2()
        {
            InitializeComponent();
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (SelectionChanged != null)
            {
                SelectionChangedEventArgs E = new SelectionChangedEventArgs(comboBox1.Text);
                SelectionChanged(this, E);
            }

          
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            if (TextChanged != null)
            {
                TextChangedEventEventArgs E = new TextChangedEventEventArgs(textBox1.Text);
                TextChanged(this, E);
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WF.ThreadFrom
{
    public partial class Form1 : Form
    {
        private Form2 frm;

        public Form1()
        {
            InitializeComponent();

            frm = new Form2();
            frm.SelectionChanged += new SelectionChangedEventHandler(frm_SelectionChanged);
            frm.TextChanged += new TextChangedEventHander(frm_TextChanged);
        }

        void frm_TextChanged(object sender, TextChangedEventEventArgs e)
        {
            textBox1.Text = e.Msg;
        }

        void frm_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            textBox1.Text = e.Selection;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            frm.ShowDialog();
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

  

    }
}