C# winform 用子窗体刷新父窗体,子窗体改变父窗体控件的值

偏执的太偏执、 2021-10-23 06:43 553阅读 0赞

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;     
            \}     
        \}     
    
    \}     
\}    
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();     
            \}     
        \}     
    
    \}     
\}    
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();     
        \}     
    \}     
\}    
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  
[http://heisetoufa.javaeye.com/blog/382684][http_heisetoufa.javaeye.com_blog_382684]

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 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;     
        \}     
    \}     
\}

本文来自CSDN博客，转载请标明出处：[http://blog.csdn.net/xiaofan\_sap/archive/2010/05/07/5567874.aspx][http_blog.csdn.net_xiaofan_sap_archive_2010_05_07_5567874.aspx]

转载于:https://www.cnblogs.com/yja9010/archive/2010/11/07/3178822.html

[http_heisetoufa.javaeye.com_blog_382684]: http://heisetoufa.javaeye.com/blog/382684
[http_blog.csdn.net_xiaofan_sap_archive_2010_05_07_5567874.aspx]: http://blog.csdn.net/xiaofan_sap/archive/2010/05/07/5567874.aspx