此BackgroundWorker当前正忙,无法同时运行多个任务

如果我单击一个启动backgroundworker两次的按钮,我会收到此错误.

This BackgroundWorker is currently busy and cannot run multiple tasks concurrently

我怎么能避免这个？

简单:不要两次启动BackgroundWorker.

您可以使用该IsBusy属性检查它是否已在运行,因此只需更改此代码:

worker.RunWorkerAsync();

对此:

if( !worker.IsBusy )
    worker.RunWorkerAsync();
else
    MessageBox.Show("Can't run the worker twice!");

更新:

如果确实需要同时启动多个后台任务,则只需创建多个BackgroundWorker对象即可

为要执行的每个操作创建一个新的BackgroundWorker对象.即,而不是:

BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += new DoWorkEventHandler(worker_DoWork);
for (int i; i < max; i++) {
   worker.RunWorkerAsync(i);
}

试试这个:

for (int i; i < max; i++) {
   BackgroundWorker worker = new BackgroundWorker();
   worker.DoWork += new DoWorkEventHandler(worker_DoWork);
   worker.RunWorkerAsync(i);
}