C# 弹窗实时刷新主窗体

曾经终败给现在 2022-05-31 12:07 491阅读 0赞

主窗体含有控件Button，DataGridView

主窗体button按钮点击函数打开弹窗

private void add_Click(object sender, EventArgs e)
            {
                DictAdd form = new DictAdd();
                form.cleareven();//去掉事件委托
                form.ev += nationload;//添加事件委托
                form.ShowDialog();
            }

弹窗C\#代码

using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Linq;
    using System.Text;
    using System.Windows.Forms;
    namespace Learn
    {
        public partial class DictAdd : Form
        {
            public delegate void TableRefres(string bh, string name);
            public event TableRefres ev;//委托方法  用于  刷新主窗体
    
            /// <summary>
            /// 去掉事件委托
            /// </summary>
            public void cleareven()
            {
                if (ev != null)
                {
                    Delegate[] ar = ev.GetInvocationList();
                    if (ar.Length > 0)
                    {
                        foreach (Delegate a in ar)
                        {
                            ev -= a as TableRefres;
                        }
                    }
                }
            }
            public DictAdd()
            {
                InitializeComponent();
            }
        
            //刷新主窗体函数
            private void button1_Click(object sender, EventArgs e)
            {
                ev("", "");
            }
        }
    }

主窗体刷新函数

public void load(string bh, string name)

弹窗定义TableRefres    然后声明ev事件

public delegate void TableRefres(string bh, string name);//保证参数一致