我可以通过写
从我的申请中发送消息port.WriteLine("AT+CMGS=\"" + m.Groups[2].Value + "\"");
port.Write(txt_msgbox.Text + char.ConvertFromUtf32(26));
这很好。但现在我想将批量消息发送到一组数字。我有这个循环来发送消息给一组数字:
foreach (ListViewItem item in bufferedListView1.Items)
{
string lname = bufferedListView1.Items[i].Text;
string lno = bufferedListView1.Items[i].SubItems[1].Text;
string gname = bufferedListView1.Items[i].SubItems[2].Text;
string line = lname + "@" + lno + "@" + gname;
if (gname.Contains(sgroup))
{
var m = Regex.Match(line, @"([\w]+)@([+\d]+)@([\w]+)");
if (m.Success)
{
port.WriteLine("AT+CMGS=\"" + m.Groups[2].Value + "\"");
port.Write(txt_msgbox.Text + char.ConvertFromUtf32(26));
Thread.Sleep(4000);
}
sno++;
}
i++;
}
这也很有效。但问题在于UI,在相当长的时间内变得反应迟钝。有没有更好的方法呢?
答案 0 :(得分:3)
使用BackgroundWorker
- 它们非常易于使用,并以封装的方式管理线程。这个类的好处是它支持取消,如果你想取消流程并且它支持报告进度,我将在这里展示。最后,关于这个类的好处是,当它报告进度时,它会正确切换线程,确保你没有在单独的线程上写入UX - 但DoWork
事件处理程序中的代码仍然可以正确管理一个单独的线程。
您可以执行以下操作。
// in this example this is scoped to the class, but just scope it appropriately
private BackgroundWorker worker = new BackgroundWorker();
......
// because I don't really know anything about how your program is structured I'm not sure
// where you want to place all of the definitions OR where you want to place RunWorkerAsync
// but you want the definitions to happen ONCE and the RunWorkerAsync to be where the USER
// initiates it
// this will allow you to consume the ProgressChanged event
worker.WorkerReportsProgress = true;
// this will allow you to set the CancellationPending property
worker.WorkerSupportsCancellation = true;
worker.DoWork += (o, args) =>
{
foreach (ListViewItem item in bufferedListView1.Items)
{
string lname = bufferedListView1.Items[i].Text;
string lno = bufferedListView1.Items[i].SubItems[1].Text;
string gname = bufferedListView1.Items[i].SubItems[2].Text;
string line = lname + "@" + lno + "@" + gname;
if (gname.Contains(sgroup))
{
var m = Regex.Match(line, @"([\w]+)@([+\d]+)@([\w]+)");
if (m.Success)
{
port.WriteLine("AT+CMGS=\"" + m.Groups[2].Value + "\"");
port.Write(txt_msgbox.Text + char.ConvertFromUtf32(26));
Thread.Sleep(4000);
}
sno++;
}
i++;
}
}
worker.ProgressChanged += (s, args) =>
{
// set some progress here, the ProgressChangedEventArgs inherently supports an integer
// progress via the ProgressPercentage property
}
worker.RunWorkerCompleted += (s, args) =>
{
// with the RunWorkerCompletedEventArgs class you can check for errors via Error, did
// cancellation occur via Cancelled, and you can even send a complex result via the Result
// property - whatever you need
}
// this starts the work in the DoWork event handler
worker.RunWorkerAsync();
以下是Microsoft关于此事的文档的link。