C# Windows Form 刷新父窗体

第一种方法:
用委托,Form2和Form3是同一组
Form2

C#代码

 

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

C#代码

 

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

C#代码

 

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;  
        }  
    }  
}

第3种方法

遍历窗体查找