We Keep Coding

Determine if a given url (from a string) is from my domain or not

I'm trying to check from c# code if a given url is from my domain or not, in order to add the "nofollow" and "target _Blank" attributes for external links.
When i talk about external links i refer to any link outside my domain.
By default it does not have that attributes. I tried a lot of stuff, basically this is the part i need to fix:
public void PrepareLink(HtmlTag tag)
{
string url = tag.attributes["href"];
if (PrepareLink != null)
{
if (it is from an external site???)
{
tag.attributes["rel"] = "nofollow";
tag.attributes["target"] = "_blank";
}
}
Edit:
things i've tried:
string dominioLink = new Uri(url).Host.ToLower();
if (!dominioLink.Contains(myDomainURL))
{
tag.attributes["rel"] = "nofollow";
tag.attributes["target"] = "_blank";
}
Which has the issue that dont take in mind subdomains
i.e. if a link created is http://www.mydomain.com.anotherfakedomain.com, it will return true and work well.
I've looked in every Uri property but didn't seem to contains the base domain.
I'm currently using .NET Core 2.0.
thankS! please if you need any other data just let me know.

You can use the Uri.Host property to obtain the domain from a URL string, then compare it to your own. I suggest using a case-insensitive match.
var url = tag.attributes["href"];
var uri = new Uri(url);
var match = uri.Host.Equals(myDomain, StringComparison.InvariantCultureIgnoreCase)

Replace Query String of a page

I want to replace the Query String of my page like this-
firstly I move to this page on clicking on menu bar Items by setting this URL-
Response.Redirect("SearchtWorkForceReport.aspx?page=Search");
then I want to change url like this-
"SearchtWorkForceReport.aspx?page=Search" to "SearchtWorkForceReport.aspx?page=Edit" on a check box change event.
I try this code-
string strQueryString = Request.QueryString.ToString();
if (strQueryString.Contains("page"))
{
strQueryString = strQueryString.Replace("Search", "Edit");
}
and it'll replace the Query String but on page load if I get the query string should give again the previous set string.
type = Request.QueryString["page"].ToString();

You can't edit query string of the page by editing Request.QueryString. you should redirect to current page. use code below:
if (Request.RawUrl.Contains("page"))
{
Response.Redirect(Request.RawUrl.Replace("Search", "Edit"))
}

Query strings are provided by your clients, changing your copy server-side does not have any effect.
You have to redirect your client to the new URL with the new query string:
Response.Redirect("SearchtWorkForceReport.aspx?page=Edit");

From your question my understanding is you are trying to change the query string in check box change event on the second page.
so write this code in checkbox change event
Response.Redirect("SearchtWorkForceReport.aspx?page=Edit");
and in page load check the querystring
string type = Request.QueryString["page"].ToString();
if(type=="Edit")
{
//what you want to do?
}

Navigating to DNN Module

I'm forming a newsletter with links to various html modules within my DNN website. I have access to each of their ModuleID's and I'm wanting to use that to get the url. The current approach (made by a third party developer) worked, but only to a degree. The url's are incorrectly formed when the Modules are located deeper in the website.
For example module located at www.website.com/website/articles.aspx is works fine, but a module located www.website.com/website/articles/subarticles.aspx won't. I know this is because the url is incorrectly formed.
Here's the current code:
DotNetNuke.Entities.Modules.ModuleController objModCtrlg = new DotNetNuke.Entities.Modules.ModuleController();
DotNetNuke.Entities.Modules.ModuleInfo dgfdgdg = objModCtrlg.GetModule(ContentMID);
TabController objtabctrll = new TabController();
TabInfo objtabinfoo = objtabctrll.GetTab(tabidfrcontent);
string tabnamefremail= objtabinfoo.TabName;
moduletitlefrEmail = dgfdgdg.ModuleTitle;
string readmorelinkpath = basePath + "/" + tabnamefremail + ".aspx";
ContentMID is the current module ID I'm looking at. I've tried to use Globals.NavigateURL, but that always crashes with Object reference not set to an instance of an object. error. Same thing when I use objtabinfoo.FullUrl so I'm currently at a loss as to how I get the specific modules URL.
EDIT: Here's some more code as to how the tabId is retrieved.
IDictionary<int, TabInfo> dicTabInfo12 = new Dictionary<int, TabInfo>();
ContentMID = Convert.ToInt32(dsNewsList.Tables[0].Rows[i]["ModuleID"]);
dicTabInfo12 = objTabctrl.GetTabsByModuleID(ContentMID);
if (dicTabInfo12.Count > 0)
{
string tester = ""; //Debug
foreach (KeyValuePair<int, TabInfo> item1 in dicTabInfo12)
{
tabidfrcontent = item1.Key;
}
}

You really should be using NavigateUrl to build the links ance if you have the tabid, you are golden.
string readMoreLinkPath = NavigateUrl(tabidfrcontent);
Nice and simple

Okay, colleague suggested this and it works great within a scheduler.
string linkPath = basePath + "/Default.aspx?TabID=" + tabID;
Will Navigate you to the correct tab ID. So this would be the best solution if you're forced to work within a scheduler where you can't use NavigateUrl without some major workarounds.

Sitecore workflow approval/rejection emails

We are working on implementing some custom code on a workflow in a Sitecore 6.2 site. Our workflow currently looks something like the following:
Our goal is simple: email the submitter whether their content revision was approved or rejected in the "Awaiting Approval" step along with the comments that the reviewer made. To accomplish this we are adding an action under the "Approve" and "Reject" steps like so:
We are having two big issues in trying to write this code
There doesn't seem to be any easy way to determine which Command was chosen (the workaround would be to pass an argument in the action step but I'd much rather detect which was chosen)
I can't seem to get the comments within this workflow state (I can get them is the next state though)
For further context, here is the code that I have so far:
var contentItem = args.DataItem;
var contentDatabase = contentItem.Database;
var contentWorkflow = contentDatabase.WorkflowProvider.GetWorkflow(contentItem);
var contentHistory = contentWorkflow.GetHistory(contentItem);
//Get the workflow history so that we can email the last person in that chain.
if (contentHistory.Length > 0)
{
//contentWorkflow.GetCommands
var status = contentWorkflow.GetState(contentHistory[contentHistory.Length - 1].NewState);
//submitting user (string)
string lastUser = contentHistory[contentHistory.Length - 1].User;
//approve/reject comments
var message = contentHistory[contentHistory.Length - 1].Text;
//sitecore user (so we can get email address)
var submittingUser = sc.Security.Accounts.User.FromName(lastUser, false);
}

I ended up with the following code. I still see no good way to differentiate between commands but have instead implemented two separate classes (one for approve, one for reject):
public void Process(WorkflowPipelineArgs args)
{
//all variables get initialized
string contentPath = args.DataItem.Paths.ContentPath;
var contentItem = args.DataItem;
var contentWorkflow = contentItem.Database.WorkflowProvider.GetWorkflow(contentItem);
var contentHistory = contentWorkflow.GetHistory(contentItem);
var status = "Approved";
var subject = "Item approved in workflow: ";
var message = "The above item was approved in workflow.";
var comments = args.Comments;
//Get the workflow history so that we can email the last person in that chain.
if (contentHistory.Length > 0)
{
//submitting user (string)
string lastUser = contentHistory[contentHistory.Length - 1].User;
var submittingUser = Sitecore.Security.Accounts.User.FromName(lastUser, false);
//send email however you like (we use postmark, for example)
//submittingUser.Profile.Email
}
}

I have answered a very similar question.
Basically you need to get the Mail Workflow Action and then you need to further extend it to use the original's submitter's email.

Easiest way to get the command item itself is ProcessorItem.InnerItem.Parent

This will give you the GUID for commands like submit, reject etc.
args.CommandItem.ID
This will give you the GUID for states like Draft, approved etc.
args.CommandItem.ParentID

Html parser to get blog posts

I need to create a html parser, that given a blog url, it returns a list, with all the posts in the page.
I.e. if a page has 10 posts, it
should return a list of 10 divs,
where each div contains h1 and
a p
I can't use its rss feed, because I need to know exactly how it looks like for the user, if it has any ad, image etc and in contrast some blogs have just a summary of its content and the feed has it all, and vice-versa.
Anyway, I've made one that download its feed, and search the html for similar content, it works very well for some blogs, but not for others.
I don't think I can make a parser that works for 100% of the blogs it parses, but I want to make the best possible.
What should be the best approach? Look for tags that have its id attribute equal "post", "content"? Look for p tags? etc etc etc...
Thanks in advance for any help!

I don't think you will be successful on that. You might be able to parse one blog, but if the blog engine changes stuff, it won't work any more. I also don't think you'll be able to write a generic parser. You might even be partially successful, but it's going to be an ethereal success, because everything is so error prone on this context. If you need content, you should go with RSS. If you need to store (simply store) how it looks, you can also do that. But parsing by the way it looks? I don't see concrete success on that.

"Best possible" turns out to be "best reasonable," and you get to define what is reasonable. You can get a very large number of blogs by looking at how common blogging tools (WordPress, LiveJournal, etc.) generate their pages, and code specially for each one.
The general case turns out to be a very hard problem because every blogging tool has its own format. You might be able to infer things using "standard" identifiers like "post", "content", etc., but it's doubtful.
You'll also have difficulty with ads. A lot of ads are generated with JavaScript. So downloading the page will give you just the JavaScript code rather than the HTML that gets generated. If you really want to identify the ads, you'll have to identify the JavaScript code that generates them. Or, your program will have to execute the JavaScript to create the final DOM. And then you're faced with a problem similar to that above: figuring out if some particular bit of HTML is an ad.
There are heuristic methods that are somewhat successful. Check out Identifying a Page's Primary Content for answers to a similar question.

Use the HTML Agility pack. It is an HTML parser made for this.

I just did something like this for our company's blog which uses wordpress. This is good for us because our wordress blog hasn't changed in years, but the others are right in that if your html changes a lot, parsing becomes a cumbersome solution.
Here is what I recommend:
Using Nuget install RestSharp and HtmlAgilityPack. Then download fizzler and include those references in your project (http://code.google.com/p/fizzler/downloads/list).
Here is some sample code I used to implement the blog's search on my site.
using System;
using System.Collections.Generic;
using Fizzler.Systems.HtmlAgilityPack;
using RestSharp;
using RestSharp.Contrib;
namespace BlogSearch
{
public class BlogSearcher
{
const string Site = "http://yourblog.com";
public static List<SearchResult> Get(string searchTerms, int count=10)
{
var searchResults = new List<SearchResult>();
var client = new RestSharp.RestClient(Site);
//note 10 is the page size for the search results
var pages = (int)Math.Ceiling((double)count/10);
for (int page = 1; page <= pages; page++)
{
var request = new RestSharp.RestRequest
{
Method = Method.GET,
//the part after .com/
Resource = "page/" + page
};
//Your search params here
request.AddParameter("s", HttpUtility.UrlEncode(searchTerms));
var res = client.Execute(request);
searchResults.AddRange(ParseHtml(res.Content));
}
return searchResults;
}
public static List<SearchResult> ParseHtml(string html)
{
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);
var results = doc.DocumentNode.QuerySelectorAll("#content-main > div");
var searchResults = new List<SearchResult>();
foreach(var node in results)
{
bool add = false;
var sr = new SearchResult();
var a = node.QuerySelector(".posttitle > h2 > a");
if (a != null)
{
add = true;
sr.Title = a.InnerText;
sr.Link = a.Attributes["href"].Value;
}
var p = node.QuerySelector(".entry > p");
if (p != null)
{
add = true;
sr.Exceprt = p.InnerText;
}
if(add)
searchResults.Add(sr);
}
return searchResults;
}
}
public class SearchResult
{
public string Title { get; set; }
public string Link { get; set; }
public string Exceprt { get; set; }
}
}
Good luck,
Eric