这是我的要求。有一个公共网站,该网站以字母数字字符串作为输入,并将数据检索到表格元素中(通过单击按钮)。table元素具有几个标签,这些标签中填充了相应的数据。我需要一个可以检查网站数据库中是否存在特定字符串的工具/解决方案。如果是这样,则检索该字符串所有出现的所有Id。查看网站的“查看源代码”(此处未使用JavaScript),我记下了输入元素名称和按钮元素名称,并在现有示例的帮助下获得了可行的解决方案。以下是有效的代码,但我想检查是否有更好,更快速的方法。我知道以下代码有一些问题,例如“无限循环”问题和其他问题。
namespace SearchWebSite
{
public partial class Form1 : Form
{
bool searched = false;
long i;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
i = 1;
WebBrowser browser = new WebBrowser();
string target = "http://www.SomePublicWebsite.com";
browser.Navigate(target);
browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(XYZ);
}
private void XYZ(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser b = null;
if (searched == false)
{
b = (WebBrowser)sender;
b.Document.GetElementById("txtId").InnerText = "M" + i.ToString();
b.Document.GetElementById("btnSearch").InvokeMember("click");
searched = true;
}
if (b.ReadyState == WebBrowserReadyState.Complete)
{
if (b.Document.GetElementById("lblName") != null)
{
string IdNo = "M" + i.ToString();
string DateString = b.Document.GetElementById("lblDate").InnerHtml;
string NameString = b.Document.GetElementById("lblName").InnerHtml;
if (NameString != null && (NameString.Contains("XXXX") || NameString.Contains("xxxx")))
{
using (StreamWriter w = File.AppendText("log.txt"))
{
w.WriteLine("Id {0}, Date {1}, Name {2}", IdNo, DateString, NameString);
i = i + 1;
searched = false;
}
}
else
{
i = i + 1;
searched = false;
}
}
else
{
i = i + 1;
searched = false;
}
}
}
}
}
如果单击Seach按钮后的页面包含的txtId和btnSearch控件超出了您可以使用此代码段的范围,那么这并不是更快,但我认为是正确的形式。
public partial class Form1 : Form
{
bool searched = false;
long i = 1;
private string IdNo { get { return "M" + i.ToString(); } }
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
i = 1;
WebBrowser browser = new WebBrowser();
string target = "http://www.SomePublicWebsite.com";
browser.Navigate(target);
browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(XYZ);
}
private void XYZ(object sender, WebBrowserDocumentCompletedEventArgs e)
{
WebBrowser b = (WebBrowser)sender;
if (b.ReadyState == WebBrowserReadyState. Complete)
{
if (searched == false)
{
DoSearch(b); return;
}
if (b.Document.GetElementById("lblName") != null)
{
string DateString = b.Document.GetElementById("lblDate").InnerHtml;
string NameString = b.Document.GetElementById("lblName").InnerHtml;
if (NameString != null && (NameString.Contains("XXXX") || NameString.Contains("xxxx")))
using (StreamWriter w = File.AppendText("log.txt"))
w.WriteLine("Id {0}, Date {1}, Name {2}", IdNo, DateString, NameString);
}
i++;
DoSearch(b);
}
}
private void DoSearch(WebBrowser wb)
{
wb.Document.GetElementById("txtId").InnerText = IdNo;
wb.Document.GetElementById("btnSearch").InvokeMember("click");
searched = true;
}
}
本文收集自互联网,转载请注明来源。
如有侵权,请联系 [email protected] 删除。
我来说两句