窗体刷新

Question

我想通过子窗体的一个按钮，刷新父窗体的数据，父窗体的数据能立即显现，请问如何实现？

Answer 1

要么委托
要么就这么些在父窗体中，写入如下静态构造
public mainFrm main=null;在构造中写入main=this;然后把其mainFrm_load（）事件改成公共public类型在子窗体中在按钮事件中直接引用
mainFrm.main.mainFrm_Load(sender,e);就可以刷新了

Answer 2

在构造中写入main=this; 
构造怎么写？

Answer 3

 public mainfrom()
  {
    main=this;
  }

Answer 4

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace EventTransData
{
    public delegate void CallbackHander(string s);//委托,参数可修改，多参数可以自己定义一个类    public delegate void CallbackHander1(bool b);
    public partial class Form1 : Form
    {
        object thislock = new object();
        public Form1()
        {
            InitializeComponent();
        }
        public event CallbackHander GetString;//定义的事件，命名规则不对        System.Threading.Timer t ;
        private void button1_Click(object sender, EventArgs e)
        {            //我用的System.Threading.Timer，随便用的
            t = new System.Threading.Timer(new System.Threading.TimerCallback(SetData),"",1000,1000);//System.Threading.Timeout.Infinite);
        }        private void SetEnabled(bool b)
        {
            //这里你可以将你想要控制的控件添加进去，我只是简单的将所有的Controls做了一次判断
            //foreach (Control con in this.Controls)
            //{
            //    con.Enabled = b;
            //}
            this.Enabled = b;
        }        private void SetData(object o)
        {
            lock (thislock)
            {
                if (this.InvokeRequired)
                {
                    Invoke(new CallbackHander1(SetEnabled), false);
                }
                else
                {
                    SetEnabled(false);
                }
                if (this.label1.InvokeRequired)//跨线程调用控件判断
                {
                    Invoke(new CallbackHander(Refreshlabel), "开始");
                }
                else
                {
                    Refreshlabel("开始");
                }                if (GetString != null)//开始的事件
                {
                    GetString("开始");
                }
                System.Threading.Thread.Sleep(5000);//你处理的过程
                if (this.label1.InvokeRequired)
                {
                    Invoke(new CallbackHander(Refreshlabel), "结束");
                }
                else
                {
                    Refreshlabel("结束");
                }
                if (this.InvokeRequired)
                {
                    Invoke(new CallbackHander1(SetEnabled), true);
                }
                else 
                {
                    SetEnabled(true);
                }
                if (GetString != null)//结束的事件
                {
                    GetString("结束");
                }
                System.Threading.Thread.Sleep(5000);
            }
            
        }
        private void Refreshlabel(string value)
        {
            this.label1.Text = value;
        }        private void button2_Click(object sender, EventArgs e)
        {
            //这两个窗体的关系如果不一样你需要自己修改
            Form2 f = new Form2();
            f.Owner = this;
            //f.Show();//非模态
            f.ShowDialog();//模态?
            
        }
    }
}using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;namespace EventTransData
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }        private void Form2_Load(object sender, EventArgs e)
        {
            Form1 f = (Form1)this.Owner;
            f.GetString += new CallbackHander(f_GetString);
        }        void f_GetString(string s)
        {
            if (this.label1.InvokeRequired)
            {
                Invoke(new CallbackHander( Refreshlabel),s);
            }
            else 
            {
                Refreshlabel(s);
            }
        }
        private void Refreshlabel(string value)
        {
            this.label1.Text = value;
        }    }
}
前两天也想实现和你类似的功能，代码在上边，看能帮助你不！