扩展BindingList，防止增加、删除项时自动更新界面而不出现“跨线程操作界面控件”异常

代码示例

using System;
using System.ComponentModel;
using System.Threading;
using System.Windows.Forms;

namespace TempForms
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            Initial();
        }

        private UiBindList<int> _list;
        private void Initial()
        {
            _list = new UiBindList<int> { SynchronizationContext = SynchronizationContext.Current };
            bindingSource1.DataSource = _list;

            new Thread(() =>
            {
                while (true)
                {
                    Thread.Sleep(1000);
                    var newItem = DateTime.Now.Second;
                    _list.Add(newItem);

                    Thread.Sleep(1000);
                    _list.Remove(newItem);
                }
            })
            {
                IsBackground = true,
            }
            .Start();
        }
    }

    /// <summary>
    /// 扩展BindingList，防止增加、删除项时自动更新界面而不出现“跨线程操作界面控件”异常
    /// </summary>
    class UiBindList<T> : BindingList<T>
    {
        /// <summary>
        /// 界面同步上下文
        /// </summary>
        public SynchronizationContext SynchronizationContext { get; set; }

        /// <summary>
        /// 使用此方法执行一切操作上下文相关的操作
        /// </summary>
        private void Excute(Action action, object state = null)
        {
            if (SynchronizationContext == null)
                action();
            else
                SynchronizationContext.Post(d => action(), state);

        }

        public new void Add(T item)
        {
            Excute(() => base.Add(item));
        }

        public new void Remove(T item)
        {
            Excute(() => base.Remove(item));
        }
    }
}

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