后台线程C＃
[英]Background Threading C#
问题描述
我正在使用C＃Windows软件。 我想同时运行6个Web浏览器。 每个浏览器中都有6种不同的网站导航，我想同时填写它们的价值。 使用线程，所有浏览器都在运行，并且网站可以正确导航。 但是我的问题是，每个浏览器的价值都是一个接一个地填充。 请建议我如何在每个站点中同时填充所有值以及后台线程（线程以隐藏模式运行）
frmBrowser frmBz = new frmBrowser();
void bbyp_com()
{
frmBrowser1 frmB = new frmBrowser1();
try
{
if (InvokeRequired)
{
this.Invoke(new MethodInvoker(bbyp_com));
return;
}
frmB.MdiParent = frmBz;
frmB.Show();
frmBz.LayoutMdi(MdiLayout.TileVertical);
if (!Navigate(ref frmB.webBrowser1,Global.Website[Global.WebsiteIndex(Global.ListingQueue[5])].urlListing))
throw new System.ArgumentException("", "");
frmB.Text = frmB.webBrowser1.Document.Url.ToString();
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["COMPANY"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("BusinessTitle").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["CTYPE"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("Category").SelectSingleNode("CategoryOption1").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["ADDRESS"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Street_Address").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["CITY"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("City").InnerText);
if (!Global.ComboSelect(frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("select")["ST"], Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("State").InnerText, "Select a state"))
throw new System.ArgumentException("", "");
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["ZIP"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Zipcode").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["BTN"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Phone").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["WEB_SITE"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Website").InnerText);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["EMAIL"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("ContactE-Mail").InnerText);
TimeDelay(1000);
frmB.webBrowser1.Document.Forms["FrontPage_Form2"].GetElementsByTagName("input")["B1"].InvokeMember("click");
if (!IsDone(ref frmB.webBrowser1))
throw new System.ArgumentException("", "");
frmB.Text = frmB.webBrowser1.Document.Url.ToString();
TimeDelay(50000);
if (!Success(ref frmB.webBrowser1, "Thank You!"))
throw new System.ArgumentException("", "");
counter--;
TimeDelay(1000);
frmB.Close();
}
catch (Exception)
{
counter--;
TimeDelay(1000);
frmB.Close();
lblFailed.Text = (Convert.ToInt32(lblFailed.Text) + 1).ToString();
}
}
第二功能
void yellowusa_com()
{
frmBrowser1 frmB = new frmBrowser1();
try
{
if (InvokeRequired)
{
this.Invoke(new MethodInvoker(yellowusa_com));
return;
}
frmB.MdiParent = frmBz;
frmB.Show();
frmBz.LayoutMdi(MdiLayout.TileVertical);
if (!Navigate(ref frmB.webBrowser1,Global.Website[Global.WebsiteIndex(Global.ListingQueue[4])].urlListing))
throw new System.ArgumentException("", "");
frmB.Text = frmB.webBrowser1.Document.Url.ToString();
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lname"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("BusinessTitle").InnerText);
TimeDelay(100);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["comments"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectNodes("Website")[4].SelectSingleNode("Category").InnerText);
TimeDelay(200);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lContact"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("ContactDetails").SelectSingleNode("Name").SelectSingleNode("FirstName").InnerText + ' '
+ Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("ContactDetails").SelectSingleNode("Name").SelectSingleNode("LastName").InnerText);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lAddress"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Street_Address").InnerText);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lCity"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("City").InnerText);
if (!Global.ComboSelect(frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("select")["lState"], Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("State").InnerText, "- Select"))
throw new System.ArgumentException("", "");
string phone = Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Phone").InnerText.Substring(0, 3)
+ Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Phone").InnerText.Substring(4, 3)
+ Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Phone").InnerText.Substring(8, 4);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lZip"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Zipcode").InnerText);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["n1Phone"].SetAttribute("value", phone);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lEmail"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("ContactE-Mail").InnerText);
try
{
string fax = Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("FaxNumber").InnerText.Substring(0, 3)
+ Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("FaxNumber").InnerText.Substring(4, 3)
+ Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("FaxNumber").InnerText.Substring(8, 4);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["lFax"].SetAttribute("value",fax);
}
catch (Exception)
{ }
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["websiteURL"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("Website").InnerText);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("textarea")["describeBiz"].SetAttribute("value", Global.XmlData.DocumentElement.SelectNodes("Author")[Global.AuthorDefault()].SelectSingleNode("ClientName").SelectSingleNode("ClientListing").SelectSingleNode("BusinessProfile").SelectSingleNode("BasicCompanyDetails").SelectSingleNode("BusinessDescription").InnerText);
if (!ShowCaptcha(ref frmB.webBrowser1, "recaptcha"))
throw new System.ArgumentException("", "");
string captchaval = objfrmCaptchaSettings.HumanCaptcha();
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")["recaptcha_response_field"].SetAttribute("value", captchaval);
frmB.webBrowser1.Document.Forms["form"].GetElementsByTagName("input")[17].InvokeMember("click");
if (!IsDone(ref frmB.webBrowser1))
throw new System.ArgumentException("", "");
frmB.Text = frmB.webBrowser1.Document.Url.ToString();
if (!Success(ref frmB.webBrowser1, "Thank You"))
throw new System.ArgumentException("", "");
counter--;
TimeDelay(1000);
frmB.Close();
}
catch (Exception)
{
counter--;
TimeDelay(1000);
frmB.Close();
lblFailed.Text = (Convert.ToInt32(lblFailed.Text) + 1).ToString();
Exception();
}
}
/ *这里frmBz是MDi父对象
由于空间有限，在这里我只放了两个功能
我正在用这个
Thread m_thread1 = new Thread(new ThreadStart(hotfrog_com));
m_thread1.SetApartmentState(ApartmentState.STA);
Thread m_thread2 = new Thread(new ThreadStart(yahoolocal_com));
m_thread2.SetApartmentState(ApartmentState.STA);
Thread m_thread3 = new Thread(new ThreadStart(ezlocal_com));
m_thread3.SetApartmentState(ApartmentState.STA);
Thread m_thread4 = new Thread(new ThreadStart(merchantcircle_com));
m_thread4.SetApartmentState(ApartmentState.STA);
Thread m_thread5 = new Thread(new ThreadStart(yellowusa_com));
m_thread5.SetApartmentState(ApartmentState.STA);
Thread m_thread6 = new Thread(new ThreadStart(bbyp_com));
m_thread6.SetApartmentState(ApartmentState.STA);
要启动Thread * selectedwebsites是列表 *
while (selectedwebsites.Count > 0)
{
try
{
if (selectedwebsites[j] == "hotfrog.com")
{
counter++;
m_thread1.Start();
selectedwebsites.RemoveAt(j);
break;
}
if (selectedwebsites[j] == "local.yahoo.com")
{
counter++;
m_thread2.Start();
selectedwebsites.RemoveAt(j);
break;
}
if (selectedwebsites[j] == "ezlocal.com")
{
counter++;
m_thread3.Start();
selectedwebsites.RemoveAt(j);
break;
}
if (selectedwebsites[j] == "merchantcircle.com")
{
counter++;
m_thread4.Start();
selectedwebsites.RemoveAt(j);
break;
}
if (selectedwebsites[j] == "yellowusa.com")
{
counter++;
m_thread5.Start();
selectedwebsites.RemoveAt(j);
break;
}
if (selectedwebsites[j] == "bbyp.com")
{
counter++;
m_thread6.Start();
selectedwebsites.RemoveAt(j);
break;
}
}
catch(Exception) {}
}
4 个解决方案
解决方案1
2 2011-07-27 06:45:54
为什么要为此使用浏览器？ 您不能直接向服务器使用HTTP请求吗？ 浏览器只提供一个UI，仅在我认为应该由“人类”填写字段时才需要。
对于您而言，最好是您提交数据的网站将您要填写的表单公开为某种Web服务（但是，这是最佳情况：）。
解决方案2
1 已采纳 2011-07-27 06:45:03
下面是在自己的线程中运行Method WebSiteOne基本知识。 我建议您阅读线程，这里有很多很好的例子。
Thread threadWebSiteOne = new Thread(new ThreadStart(WebSiteOne));
threadWebSiteOne.Start();
使用BackGroundWorker更新。
BackgroundWorker bw = new BackgroundWorker();
bw.DoWork += bw_DoWork;
bw.RunWorkerCompleted += bw_RunWorkerCompleted; //Gets called when work completed
bw.RunWorkerAsync();
static void bw_DoWork (object sender, DoWorkEventArgs e) {
//Load Webpage X EG : hotfrog_com();
}
解决方案3
1 2011-07-27 06:45:43
也许您已经添加了一个后台线程，然后在该线程中一一打开浏览器？
尝试使用System.Threading.Threadpool.QueueUserWorkItem() ，然后在其中调用浏览器。
解决方案4
1 2011-07-27 13:15:00
问题在于您的线程根本不做任何有用的工作，因为它们会立即将所有相关的内容编组回UI线程。 我在下面简化了您的代码，以便于查看。
void bbyp_com()
{
frmBrowser1 frmB = new frmBrowser1();
try
{
if (InvokeRequired)
{
this.Invoke(new MethodInvoker(bbyp_com));
return;
}
// All of the useful work happens here.
}
catch
{
// Stuff omitted here for brevity.
}
}
请注意， 在进行任何实际工作之前 ，辅助线程如何立即调用Control.Invoke以递归地重新输入UI线程上的方法。 最重要的是，工作线程实际上会在工作线程本身终止之前等待UI线程完成。 效果比，因为一个新的线程创建以来一直以什么比浪费资源更多只是在做从一开始就在UI线程上一切变得更糟1。
天真的解决方案是忽略对工作线程中Control.Invoke的调用，然后让它完成所有工作。 但是，a，这还是行不通的，因为大多数有用的工作都需要对UI元素做一些事情，您可能已经知道，UI元素是除UI线程以外的任何事情所禁止的。
您将不得不从根本上改变您的策略。
C# 线程/异步：在 UI 可交互时在后台运行任务
[英]C# Threading/Async: Running a task in the background while UI is interactable
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