BackgroundWorkerExtensionLib/BackgroundWorkerExtension.cs

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using System;
using System.ComponentModel;
using System.Threading;

namespace BackgroundWorkerExtensionLib
{

    public class CustomerDoWorkEventArgs
    {
        public object ExecParameter { get; set; }
        public BackgroundWorker ExecBackgroundWorker { get; set; }
    }

    public static class BackgroundWorkerExtension
    {

        //构造BackgroundWorker对象
        /// <summary>
        /// 构造BackgroundWorker对象
        /// </summary>
        /// <param name="doWorkEvent">待处理的事件</param>
        /// <param name="progressChangedEvent">通知事件</param>
        /// <param name="runWorkerCompletedEvent">结束事件</param>
        /// <returns></returns>
        public static BackgroundWorker InitNewBackgroundWorker(DoWorkEventHandler doWorkEvent = null, ProgressChangedEventHandler progressChangedEvent = null, RunWorkerCompletedEventHandler runWorkerCompletedEvent = null)
        {
            var bw = new BackgroundWorker();
            bw.RegisterDoWork(doWorkEvent);
            bw.RegisterProgressChanged(progressChangedEvent);
            bw.RegisterRunWorkerCompleted(runWorkerCompletedEvent);
            return bw;
        }

        //取消BackgroundWorker的执行
        /// <summary>
        /// 取消BackgroundWorker的执行
        /// </summary>
        /// <param name="bw"></param>
        public static void CancelAsyncExt(this BackgroundWorker bw)
        {
            bw.CancelAsync();
        }

        //执行BackgroundWorker
        /// <summary>
        /// 执行BackgroundWorker
        /// </summary>
        /// <param name="bw"></param>
        /// <param name="param"></param>
        public static void RunWorkerAsyncExt(this BackgroundWorker bw, object param = null)
        {
            //只有在BackgroundWorker空闲的时候才执行
            if (!bw.IsBusy)
            {
                bw.RunWorkerAsync(new CustomerDoWorkEventArgs
                {
                    ExecParameter = param ?? 10,
                    ExecBackgroundWorker = bw
                });
            }