/// <summary>
/// 进度条增加1
/// </summary>
void AddRow(Baiduxinxi xx)
{
//解决 线程间操作无效: 从不是创建控件“dgv1”的线程访问它。 的问题
//使用委托执行添加一行数据
Action action = new Action(() =>
{
int index = this.dgv1.Rows.Add();
this.dgv1.Rows[index].Cells[0].Value = xx.Name;
this.dgv1.Rows[index].Cells[1].Value = xx.Url;
this.dgv1.Rows[index].Cells[2].Value = xx.Upload;
this.dgv1.Rows[index].Cells[3].Value = xx.Size;
});
//在控件线程中执行代码，添加行
Invoke(action);
}
/// <summary>
/// 查询下一页
/// </summary>
private void SearchNextPage()
{
if (!string.IsNullOrEmpty(key))
{
lock (locker)
{
try
{
if (GetXml())
{
SetMessage("开始加载数据");
SetProgressBar(30);
HtmlWeb html = new HtmlWeb();
// HtmlAgilityPack 设置 请求超时
SetTimeout(html);
HtmlAgilityPack.HtmlDocument doc = html.Load(webUrl);
HtmlNodeCollection htmlnodecol = doc.DocumentNode.SelectNodes(xpathNodes);
SetMessage("数据加载成功，正在显示");
if (htmlnodecol == null)
{
SetMessage("没有采集到数据");
}
else
{
foreach (var hn in htmlnodecol)
{
try
{
//如果没有标题和链接则跳出
if (hn.SelectSingleNode(xpathName) == null || hn.SelectSingleNode(xpathUrl) == null)
{
continue;
}
Baiduxinxi baidu = new Baiduxinxi();
string url = hn.SelectSingleNode(xpathUrl) != null?hn.SelectSingleNode(xpathUrl).Attributes["href"].Value : "";
string name = hn.SelectSingleNode(xpathName) != null?hn.SelectSingleNode(xpathName).InnerText : "";
string size = hn.SelectSingleNode(xpathSize) != null?hn.SelectSingleNode(xpathSize).InnerText : "";
string upload = hn.SelectSingleNode(xpathUpload) != null?hn.SelectSingleNode(xpathUpload).InnerText : "";
//如果链接没有主机地址，则添加
if (url.IndexOf("http") == -1)
{
Uri uri = new Uri(webUrl);
url = uri.Scheme + "://" + uri.Host + url;
}
upload = upload.Replace("上传", "").Replace("时间", "").Replace("大小", "").Replace("发布", "").Replace(":", "").Replace("：", "");
size = size.Replace("上传", "").Replace("时间", "").Replace("大小", "").Replace("发布", "").Replace(":", "").Replace("：", "");
url = (!string.IsNullOrEmpty(url)) ? url.Trim().Replace(" ", "").Replace(" ", "") : url;
name = (!string.IsNullOrEmpty(name)) ? name.Trim() : name;
size = (!string.IsNullOrEmpty(size)) ? size.Trim().Replace(" ", "").Replace(" ", "") : size;
upload = (!string.IsNullOrEmpty(upload)) ? upload.Trim().Replace(" ", "").Replace(" ", "") : upload;
baidu.Url = url;
baidu.Name = name;
baidu.Size = size;
baidu.Upload = upload;
AddRow(baidu);
AddProgressBar();
}
catch (Exception ex)
{
ex.ToString().ToShow();
}
}
pageNum++;//页面增加
AddProgressBarAll();
SetMessage("数据加载完成");
}
}
}
catch (Exception ex) { ex.ToShow(); }
}
}
}
