C# 使用串行端口通信发送批量消息

我可以通过书面形式从我的申请中发送信息

port.WriteLine("AT+CMGS=\"" + m.Groups[2].Value + "\"");
port.Write(txt_msgbox.Text + char.ConvertFromUtf32(26));

这很好。但现在我想向一组数字发送批量消息。我使用此循环向一组数字发送消息：

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，在相当长的一段时间内变得不负责任。有更好的方法吗

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，如果您希望能够取消流程，它支持取消，并且它支持报告进度，我将在这里展示这两个方面。最后，这个类的好处是，当它报告进度时，它会正确地切换线程，确保您不是在单独的线程上向UX写入代码，但是

DoWork

事件处理程序中的代码仍然在单独的线程上正确管理

您将执行以下操作

// 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();

---

以下是有关此问题的Microsoft文档的详细信息。

使用bufferedListView1。worker.DoWork中的项会导致此异常-

跨线程操作无效：控件“bufferedListView1”是从创建它的线程以外的线程访问的。

@Cdeez-是的，您是对的，我没有注意到其中的循环是正确的。您需要将

ListViewItemCollection

转换为可以传递到

args

的东西，这是一种类似于

ListViewItem

的基本元素，因为它与

ListViewItem

非常类似，然后更改对

RunWorkerAsync

的调用以传入该变量。@Cdeez-还有，一旦你转换了代码并开始工作，编辑我的问题并发布社区的更改。