C#实现winform用子窗体刷新父窗体及子窗体改变父窗体控件值的方法

本文实例讲述了C#实现winform用子窗体刷新父窗体及子窗体改变父窗体控件值的方法。分享给大家供大家参考。具体如下：

第一种方法:

用委托,Form2和Form3是同一组

Form2

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TestMouseMove
{
  public delegate void SetVisiableHandler();
  public partial class Form2 : Form
  {
    public Form2()
    {
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      Form3 frm = new Form3(new SetVisiableHandler(SetVisiable));
      frm.Show();
    }
    private void SetVisiable()
    {
      SetVisiable(this.label1, !this.label1.Visible);
    }
    private void SetVisiable(Control control, bool visiable)
    {
      if (this.Controls.Contains(control))
      {
        control.Visible = visiable;
      }
    }
  }
}

Form3

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TestMouseMove
{
  public partial class Form3 : Form
  {
    private SetVisiableHandler m_setVisible;
    public Form3(SetVisiableHandler setvisible)
    {
      InitializeComponent();
      this.m_setVisible = setvisible;
    }
    private void btnVisible_Click(object sender, EventArgs e)
    {
      if (this.m_setVisible != null)
      {
        this.m_setVisible();
      }
    }
  }
}

第二种方法:

用变量,Form4和Form5是同一组

Form4

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TestMouseMove
{
  public partial class Form4 : Form
  {
    public Form4()
    {
      InitializeComponent();
    }
    #region 子窗口刷新父窗口的值
    private string strLabel1 = "";
    public string StrLabel1
    {
      get
      {
        return strLabel1;
      }
      set
      {
        strLabel1 = value;
        this.label1.Text = strLabel1;
      }
    }
    #endregion
    private void button1_Click(object sender, EventArgs e)
    {
      Form5 form5 = new Form5(this);//这里注意传个this
      form5.Show();
    }
  }
}

Form5

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace TestMouseMove
{
  public partial class Form5 : Form
  {
    Form4 form4 = new Form4();
    public Form5(Form4 formFrm)//这个构造方法里有参数
    {
      form4 = formFrm; //这个必须要有
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      form4.StrLabel1 = this.textBox1.Text;
    }
  }
}

希望本文所述对大家的C#程序设计有所帮助。