I'm trying to achieve pagination of the posts i get from a RSS-feed using the System.ServiceModel.Syndication. However I cant figure out how to do this and what the best way to do it is.
As of now i use a Listview to present the data that is fetched by this in my code-behind:
// Link to the RSS-feed.
string rssUri = "feed.xml";
var doc = System.Xml.Linq.XDocument.Load(rssUri);
// Using LINQ to loop out all posts containing the information i want.
var rssFeed = from el in doc.Elements("rss").Elements("channel").Elements("item")
select new
{
Title = el.Element("title").Value,
PubDate = el.Element("pubDate").Value,
Enclosure = el.Element("enclosure").Attribute("url").Value,
Description = el.Element("description").Value
};
// Binding the data to my listview, so I can present the data.
lvFeed.DataSource = rssFeed;
lvFeed.DataBind();
So where do I go from here? I'm guessing one way is to work with a DataPager in my Listview? However I'm uncertain how to work with that control, should I send all of my data into some list or something like IEnumerable<>?
After some trial and error and reading up on the DataPager i came up with the following solution that is now working very well!
First off i created a class for my object, working with that i set up a select-method for my ListView initiating at page-load binding the data to it. And the trick here was to use the ICollection interface, and send the data to a list. This is the now working code for that select-method, hope it can help someone else out facing the same problem! :)
ICollection<Podcast> SampleData()
{
string rssUri = "http://test.test.com/rss";
var doc = System.Xml.Linq.XDocument.Load(rssUri);
ICollection<Podcast> p = (from el in doc.Elements("rss").Elements("channel").Elements("item")
select new Podcast
{
Title = el.Element("title").Value,
PubDate = el.Element("pubDate").Value,
Enclosure = el.Element("enclosure").Attribute("url").Value,
Description = el.Element("description").Value
}).ToList();
return p;
}
Related
I'm a beginner programmer working on a small webscraper in C#. The purpose is to take a hospital's public website, grab the data for each doctor, their department, phone and diploma info, and display it in a Data Grid View. It's a public website, and as far as I'm concerned, the website's robots.txt allows this, so I left everything in the code as it is.
I am able to grab each data (name, department, phone, diploma) separately, and can successfully display them in a text box.
// THIS WORKS:
string text = "";
foreach (var nodes in full)
{
text += nodes.InnerText + "\r\n";
}
textBox1.Text = text;
However, when I try to pass the data on to the data grid view using a class, the foreach loop only goes through the first name and fills the data grid with that.
foreach (var nodes in full)
{
var Doctor = new Doctor
{
Col1 = full[0].InnerText,
Col2 = full[1].InnerText,
Col3 = full[2].InnerText,
Col4 = full[3].InnerText,
};
Doctors.Add(Doctor);
}
I spent a good few hours looking for solutions but none of what I've found have been working, and I'm at the point where I can't decide if I messed up the foreach loop somehow, or if I'm not doing something according to HTML Agility Pack's rules. It lets me iterate through for the textbox, but not the foreach. Changing full[0] to nodes[0] or nodes.InnerText doesn't seem to solve it either.
link to public gist file (where you can see my whole code)
screenshot
Thank you for the help in advance!
The problem is how you're selecting the nodes from the page. full contains all individual names, departments etc. in a flat list, which means full[0] is the name of the first doctor while full[4] is the name of the next. Your for-loop doesn't take that into account, as you (for every node) always access full[0] to full[3] - so, only the properties of the first doctor.
To make your code more readable I'd split it up a bit to first make a list of all the card-elements for each doctor and then select the individual parts within the loop:
HtmlWeb web = new HtmlWeb();
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc = web.Load("https://klinikaikozpont.unideb.hu/doctor_finder");
const string doctorListItem = "div[contains(#class, 'doctor-list-item-model')]";
const string cardContent = "div[contains(#class, 'card-content')]";
var doctorCards = doc.DocumentNode.SelectNodes($"//{doctorListItem}/{cardContent}");
var doctors = new List<Doctor>();
foreach (var card in doctorCards)
{
var name = card.SelectSingleNode("./h3")?.InnerText;
const string departmentNode = "div[contains(#class, 'department-name')]";
var department = card.SelectSingleNode($"./{departmentNode}/p")?.InnerText;
// other proprties...
doctors.Add(new Doctor{NameAndTitle = name, Department = department});
}
// I took the liberty to make this class easier to understand
public class Doctor
{
public string NameAndTitle { get; set; }
public string Department { get; set; }
// Add other properties
}
Check out the code in action.
im very new to testing and have no training in automated tests so please bare with me if i say stupid things but ill try the best i can.
Bascially i am trying to assert that a specific employee in the employee list has the status of 'leaver'.
This is what i have tried (and other variations with the different classes)
Assert.Equal("image-tile__badge background-color--status-leaver ng-star-inserted", Driver.FindElement(By.XPath("//*[contains(#class,'image-tile__content-header') and contains(text(),'End Date, Contract') and contains(#class, 'image-tile__badge')]")).GetAttribute("Class"));
Assert.Equal("image-tile__badge background-color--status-leaver ng-star-inserted", Driver.FindElement(By.XPath("//*[contains(#class,'image-tile__content-header') and contains(text(),'End Date, Contract')]")).FindElement(By.XPath("//*[contains(#class, 'image-tile__badge')]")).GetAttribute("Class"));
The last one finds the element when the status is 'new', but when i change the employee status to 'leaver', it still returns as 'new' so possibly looking at another employee with a 'new' status.
Hopefully this is enough info, let me know if more is needed (this is my first ever post!)
HTML code in image below
[HTML code on Chrome]
[1]: https://i.stack.imgur.com/kUxkf.png
Summary: im trying to assert that the Employee "End Date, Contract" has the status of leaver (aka the leaver class "image-tile__badge background-color--status-leaver ng-star-inserted")
Thanks everyone for their help!
One of my devs managed to take #noldors example and modify it a bit so heres what ended up working for me:
var newElmList1 = Driver.FindElements(By.CssSelector("div.background-color--status-leaver")).ToList();
List<string> newNames1 = new List<string>();
foreach (var newElm in newElmList1)
{
var newName1 = newElm.FindElement(By.XPath(".."))
.FindElement(By.CssSelector("div.image-tile__content-header")).Text;
newNames.Add(newName1);
}
if (!newNames.Contains("End Date, Contract"))
{
throw new Exception("Exception Error on leaver Person");
}
As per your screenshot i fill it's better if you try using Xpath
var elmList = Driver.FindElements(By.Xpath("//div[contains(text(),'leaver')]")).ToList();
i hope it will help you
Thank You.
According to your screenshot, you can find all elements with 'Leaver' specific class with this;
var leaverElmList = Driver.FindElements(By.CssSelector("div.background-color--status-leaver")).ToList();
List<string> leaverNames = new List<string>();
foreach (var leaverElm in leaverElmList) {
var leaverName = leaverElm.FindElement(By.XPath(".."))
.FindElement(By.CssSelector("div.image-tile__content-header"));
.Text()
leaverNames.Add(leaverName);
}
Enddate, Contract which is not related to the div that contains Leaver. It's direct parent is the image-tile div
I've been struggling for hours now trying to figure out, how to display data based on array items using linq c#.
In short i am displaying data based on results from a querystring that passes into an array.
this works great with one array item.
but if i navigate to another page that has two or more array items, i want to be able to say only show me results that contains x,y,z. Code below:
public static List<business.Resource> getResourcesFromTags(string[] tags)
{
var db = new Entities();
List<business.Resource> resources = (
from rt in db.tbl_ResourceTag
where tags.Any(t =>t.Equals(rt.tbl_Tag.Name))
select new Resource {
bookmark = rt.tbl_Resource.Bookmark,
dateAdded = rt.tbl_Resource.dateAdded,
text = rt.tbl_Resource.text,
uploadedFile = rt.tbl_Resource.uploadedFile,
uploadedImage = rt.tbl_Resource.uploadedImage,
resourceID = rt.tbl_Resource.ResourceID,
filePath = rt.tbl_Resource.filePath,
imagePath = rt.tbl_Resource.imagePath,
downloadCount = rt.tbl_Resource.downloads
}).Distinct().ToList();
return resources;
}
So to re-cap if there is more than one array item, i want to be able to show data contains just those items. very difficult to explain.
Hi and thanks in advance. I'm having a problem implementing a suggestion that I found here: Convert contents of DataGridView to List in C#
I am grabbing a GridView from a Master page and I need to add a row to the table then rebind it. I am accessing the GridView via a public property on the Master page which is being returned with data. So basically I have done this:
var gsr = master.GridSearchResults;
gsr (gsr != null)
{
var so = new List<MyProperties>();
so = gsr .Rows.OfType<DataGridViewRow>().Select(r => r.Cells.OfType<DataGridViewCell>().Select(c => c.Value).ToArray()).ToList<MyProperties>();
so.Add(new MyProperties()
{
Id = id,
Date = date,
Building = buildingName,
Street = streetName
}
gsr.DataSource = so;
gsr.DataBind();
}
But I'm receiving an error that it cannot convert an instance argument type System.Collections.Generic.IEnumerable<'object[]'> to System.Collections.Generic.IEnumerable<'MyProperties'>. I thought the problem was the call to the array but if I remove it then I just get a variation of the same error.
Turns out my issue was that I shouldn't have been getting the gridview in the first place but getting the the Gridview's source which was in session. So I solved it like this:
var master = (Tab)Master;
master.GridSearchResults.DataSource = null;
var sessions = new Sessions();
sessions.SlideOutSource.Add(new MyProperties {
Id = Id,
StartDate = hidStartDate.Value,
Installation = txtInstall.Text,
Command = txtCommand.Text });
master.GridSearchResults.DataSource = sessions.SlideOutSource;
master.GridSearchResults.DataBind();
Greetings. Im having a small trouble i would like to have some help with. Im having a very large xml file with about 1000 customers with diffrent customer information. And I would like to do methods to retrive this information. Ive been searching everywhere but cant seem to find what im looking for. Currently im trying:
public custInformation getcustInfo(string file) {
//Load the xml file
var xe = XDocument.Load(_server.MapPath(file)).Root;
//Get information
return (from p in xe.Descendants("cust-account").Descendants("cust-info")
select new custInformation
{
firstName = (string)p.Element("cust-fname"),
lastName = (string)p.Element("cust-lname"),
address = (string)p.Element("cust-address1"),
}).(All elements)??
}
(All elements) is where id like to retrive all the information. Using FirstOrDefault will only retrive the first element and LastOrDefault will only retrive the first element. If some one could help me i would be very greatefull.
you want a list of customers. Change the return value to IEnumerable
and transform the query to IEnumerable with ToList()/ToArray():
public IEnumerable<custInformation> getcustInfo(string file) {
//Load the xml file
var xe = XDocument.Load(_server.MapPath(file)).Root;
//Get information
return (from p in xe.Descendants("cust-account").Descendants("cust-info")
select new custInformation
{
firstName = (string)p.Element("cust-fname"),
lastName = (string)p.Element("cust-lname"),
address = (string)p.Element("cust-address1"),
}).ToList();
}