public static AllDataSheetSearchResult Search(string value)
{
string url = $"{SiteAddress}?Searchword={value}&sPage=1&sField=4";
HttpWebRequest request = Requests.CreateDefaultRequest(url);
string result = Requests.ReadResponseString(request);
HtmlDocument document = new HtmlDocument();
document.LoadHtml(result);
int totalPages;
AllDataSheetSearchContext.SearchOption option;
FilterSearchMode(document, out totalPages, out option);
AllDataSheetSearchContext searchContext = new AllDataSheetSearchContext(value);
searchContext.NextPage = 1;
searchContext.TotalPages = totalPages;
if (option != AllDataSheetSearchContext.SearchOption.Match)
{
searchContext.UsedOptions.Add(AllDataSheetSearchContext.SearchOption.Match);
searchContext.Option = option;
}
searchContext.Next(url);
AllDataSheetSearchResult ret = new AllDataSheetSearchResult();
ret.Parts = FilterResults(document);
ret.SearchContext = searchContext;
return(ret);
}
public static AllDataSheetSearchResult Search(AllDataSheetSearchContext searchContext)
{
if (!searchContext.CanLoadMore)
{
AllDataSheetSearchResult ret = new AllDataSheetSearchResult();
ret.Parts = null;
ret.SearchContext = searchContext;
return(ret);
}
while (true)
{
string url = $"{SiteAddress}?Searchword={searchContext.SearchValue}&sPage={searchContext.NextPage}&sField={(int)searchContext.Option}";
HttpWebRequest request = Requests.CreateDefaultRequest(url);
request.Referer = searchContext.Referer;
string result = Requests.ReadResponseString(request);
HtmlDocument document = new HtmlDocument();
document.LoadHtml(result);
if (searchContext.NextPage == 1)
{
int totalPages;
AllDataSheetSearchContext.SearchOption option;
FilterSearchMode(document, out totalPages, out option);
searchContext.TotalPages = totalPages;
if (searchContext.Option != option)
{
if (!searchContext.UsedOptions.Contains(searchContext.Option))
{
searchContext.UsedOptions.Add(searchContext.Option);
}
searchContext.Option = option;
}
}
AllDataSheetSearchResult sret = new AllDataSheetSearchResult();
if (searchContext.UsedOptions.Contains(searchContext.Option))
{
sret.Parts = new List <AllDataSheetPart>();
if (searchContext.CanLoadMore)
{
searchContext.Next(url);
continue;
}
}
else
{
sret.Parts = FilterResults(document);
}
sret.SearchContext = searchContext;
searchContext.Next(url);
return(sret);
}
}
public MoreInfo RequestMoreInfo()
{
HttpWebRequest request = Requests.CreateDefaultRequest(m_datasheetSiteLink);
string result = Requests.ReadResponseString(request);
HtmlDocument document = new HtmlDocument();
document.LoadHtml(result);
HtmlNode rootElement = document.DocumentNode;
IEnumerable <HtmlNode> matchingNodes = from node in rootElement.Descendants("td")
where IsAttributeValueLike(node, "width", "283") && IsAttributeValueLike(node, "height", "367") &&
IsAttributeValueLike(node, "align", "center") && IsAttributeValueLike(node, "valign", "top")
select node;
HtmlNode aNode = matchingNodes.ElementAt(0).Element("a");
MoreInfo moreInfo = new MoreInfo();
moreInfo.PdfSite = GetAttributeValueOrEmpty(aNode, "href");
matchingNodes = from node in rootElement.Descendants("td")
where IsAttributeValueLike(node, "height", "40") && IsAttributeValueLike(node, "class", "gray_title") &&
IsAttributeValueLike(node, "width", "88")
select node;
HtmlNode sizeNode = matchingNodes.ElementAt(2).ParentNode;
moreInfo.Size = sizeNode.Elements("td").ElementAt(1).Element("font").InnerText;
HtmlNode pagesNode = matchingNodes.ElementAt(3).ParentNode;
moreInfo.Pages = pagesNode.Elements("td").ElementAt(1).Element("font").InnerText;
HtmlNode manufacturerSiteNode = matchingNodes.ElementAt(5).ParentNode;
moreInfo.ManufacturerSite = manufacturerSiteNode.Elements("td").ElementAt(1).InnerText;
return(moreInfo);
}
public Stream GetDatasheetStream(string pdfSite)
{
Uri pdfUri = new Uri(pdfSite);
string pdfHost = pdfUri.GetLeftPart(UriPartial.Scheme) + pdfUri.Host;
CookieContainer cookies = new CookieContainer();
HttpWebRequest request = Requests.CreateDefaultRequest(pdfSite);
request.Referer = m_datasheetSiteLink;
request.CookieContainer = cookies;
string result = Requests.ReadResponseString(request);
HtmlDocument document = new HtmlDocument();
document.LoadHtml(result);
HtmlNode rootElement = document.DocumentNode;
IEnumerable <HtmlNode> matchingNodes = from node in rootElement.Descendants("iframe")
where IsAttributeValueLike(node, "height", "810") && IsAttributeValueLike(node, "name", "333") && IsAttributeValueLike(node, "width", "100%")
select node;
string pdfPath = GetAttributeValueOrEmpty(matchingNodes.ElementAt(0), "src");
string pdfDirect = pdfHost + pdfPath;
cookies.Add(new Uri(pdfDirect), cookies.GetCookies(new Uri(pdfSite)));
request = Requests.CreateDefaultRequest(pdfDirect);
request.Referer = pdfSite;
request.CookieContainer = cookies;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
return(response.GetResponseStream());
}