WPF子窗口关闭时更新父窗口数据
在父窗口中有一个listview进行数据库数据显示,和一个添加按钮,点击添加按钮后,弹出子窗口,在子窗口里输入数据信息后提交成功后返回主窗口,主窗口listview数据如何更新。
我使用了父窗口定义一个公用的refreshdata函数,在子窗口关闭时,调用这个refreshdata函数,结果无任何反应,但是该函数在父窗口执行完全没有问题。
请问在WPF里子窗口刷新父窗口数据有哪些解决方案呢?望达人指点,不胜感激!
[解决办法]
用Delegate来实现
自定义事件
[解决办法]
事件传值:
子窗体代码using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace WindowsApplication1 { //定义委托 public delegate void ChangeTextHandler(string text); public partial class ChildFrm : Form { //定义事件 public event ChangeTextHandler ChangeTextEvent; public ChildFrm() { InitializeComponent(); } /// <summary> /// /// </summary> /// <param name="sender">事件源</param> /// <param name="e">事件对象</param> private void radioButton1_CheckedChanged(object sender, EventArgs e) { RadioButton rdo = sender as RadioButton; //引发事件 if (ChangeTextEvent != null) { ChangeTextEvent(rdo.Text); } } private void ChildFrm_MouseClick(object sender, MouseEventArgs e) { //e.Button == MouseButtons.Right } private void ChildFrm_Load(object sender, EventArgs e) { } }}父窗体代码using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace WindowsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { ChildFrm frm = new ChildFrm(); //订阅事件 frm.ChangeTextEvent += new ChangeTextHandler(frm_ChangeTextEvent); frm.ShowDialog(); } void frm_ChangeTextEvent(string text) { this.textBox1.Text = text; } }}就这样