I am working on a WPF application. I have used two “tasks” inside a button click event for parallel execution.
One task calls “Method1” which downloads files from a server. The second task calls “Method2”.
Method2 contains the following operations:
Download 2 files from a server
Parse & read the files' contents
Scrape a site to fetch site details
In the scraping operation, we are creating a WebBrowser object to load the site's contents.
The issue is that - while executing the button_click event - I am getting the following error:
How can I solve this issue? Any help would be appreciated.
Thanks,
Ranish
WebBrowser is a control and can't be used in cross threading. My advice is using HttpWebRequest, HttpWebResponse and HTML Agility Pack library to scrap HTML instead
Related
I am trying to debug shared flows within a mule app. (Mac Monetrey,Anypoint 7.11.1). I am unable to see debugger showing Flow Ref of shared flows as the call goes from mule app flows to shared flows, but instead it opens up shared flow xml files. The Share Flow Ref's does not change at all.
In the attached image Authentication_FR is a flow reference in the main mule app which call the shared flow (imported using import tag). The Flow Ref never changes (always showing Authentication_FR) but share flow xml gets opened as i step thru the debugger.
Thanks in advance for all the help.
Unfortunately you are facing a current product limitation. There is a submitted idea in order to implement this into future Anypoint Studio releases.
As a workaround you could remove the XML import tags and directly add the XML file(s) containing the shared flow(s) into the src/main/mule folder of the project you are debugging. Once you complete the debugging activities you will need to bring your project back to its original state.
I am writing a automation script using selenium web driver for downloading multiple files one by one from a web site in Mozilla fire fox. I have downloaded first file successfully and next time I need to wait for download to complete. Can anybody help how to identify an ongoing download is completed using c# selenium web driver.? Since I am not getting the download complete status, I am unable to continue downloading next file.
Assuming you are testing file downloading in Firefox as you mentioned. Here is an approach to achieve what you want.
Open new window/tab in Firefox and navigate to 'about:downloads' directly.
i.e. driver.Navigate().GoToUrl("about:downloads");
You will get the list of downloads (i.e. already downloaded files and the file which is being downloaded currently.)
You will have to switch between your site tab and downloads tab.
Now on downloads tab, looking at HTML, you can easily find out in progress download using state or status attributes.
For example, for the first file in the list, if state="0" and/or status
contains the text 'remaining', it means downloading is in progress
So you can wait till state becomes state = 1 and/or status does not contain >the text 'remaining'
Refer the attached screen shot.
The explanation I gave here looks very high level, but I am sure this approach will work. It is simple too.
Let me know if you have any queries on this.
I could not think of a better title, Please suggest one.
I am planning to work on a large web application. It will take time to load the full application before application starts functioning.
Suppose its something like asana.com. If you have a link to the task and you open the link. It loads the application first and then shows the detail of the task.
Note: I have added another example in update 2
I want to do just the opposite. Suppose if I try to open the link directly. It should show me the tasks details first and then load the whole application in background.
What development strategy should I follow to implement such feature. Will angular be good for this? I have worked with angular for small projects and am capable of think in angular :)
I just wanted to be pointed in right direction.
Update 1:
I am using Apache2 PHP5 in backing as ReST API. I am thinking to change to GoLang http server. But that does not matter in this context :)
Update 2:
I have not yet started working on the application, but I know that its size is going to be big and its going to take time to load the application. This will be a javascript application, all the communication to web will be done mostly by API. APIs will be fast and it wont be slowing down the application. My main concern is the javascript library and the approach to the issue that I want to display the content of the page before the application is loaded and load the application in background.
As second example: https://chrome.google.com/webstore/detail/a-journey-through-middle/gjgkjeheegjnnmheaflhdocglkiegoni?utm_source=chrome-ntp-icon
If you open this link in chrome, it will load the application and then load the specific content in a popup. I want to load the content of the popup first and then load the application in background. How should I write my application to achieve that.
My suggestion (and I say this as I start to do similar vs. having proven it successful) would be to make some level of framework fairly static so that users get an almost instant response to the site loaded and then start the angular app with something like this
angular.bootstrap(document.getElementById("container"), ["app"])
Ref for the api - https://docs.angularjs.org/api/ng/function/angular.bootstrap
Ref for a demonstration of this - https://egghead.io/lessons/angularjs-angular-bootstrap-app-init
My expectation then is that you will be able to
Load your static elements quickly (which will just have placeholders for your content/material)
Access the data you want in the order you want to get it to present on the screen
Release any other part of the app you need to chrome it up/decorate or populate side items.
I'm trying to send a PDF file from a WCF to silverlight client. PDF is generated by DevExpress XtraReports (in method XtraReport CreateReport(string reportTypeName, RootGenericReportParameterContainer reportInformation)).
Acually PDF is saved somewhere on clients computer after choosing save path in file save dialog - DevExpress takes care of everything - but I don't have a clue how to open the PDF in new tab in browser.
And here is another problem. Silverlight 4 has no access to local file system right? So information about local PDF location is useless. Maybe it would be better to save the PDF in WCF and send a link to it to the client - but how?
I would first question why you need to send the file to the Silverlight client. Get rid of that requirement and the solution becomes much simpler. Silverlight can provide a link that opens a new browser tab. That link would be handled by the web domain, processing it as an HttpHandler, generating the PDF file for the browser. Your PDF url doesn't have to reference a physical file, you can still generate it on request, handle querystring values, etc... Lots of different ways to do this.
Seems that the question isn't really about DevExpress or Silverlight - you're just looking to open a [document of some kind] in a new tab. Each browser natively handles things differently, and users can change tab handling to whatever they want. And (as you mentioned) once the user has downloaded the file, you no longer control it.
Your best bet (and the way I do it) is probably to have a link pointing to a handler/file using "target='_blank' " in the anchor tag on the webpage. From the server side, you would want to set the "Content-Disposition" header to "Inline" to indicate to the browser that the document should be displayed in place instead of downloaded ("Attachment").
I'm planning to use thw WebBrowser component to display html that is created on the fly. The perfect choice for this is NavigateToString or NavigateToStream methods. There's only one single problem - I need to load images / css styles / js files too. How do I accomplish this while using string/stream?
As an option I'm also considering writing/finding simple http server and running it on some port, but that's an additional work and requirements(open ports) so I'd like to avoid that if it's possible.
You can cast WebBrowser.Document to IPersistMoniker and load a moniker that implements GetDisplayName. Check http://csexwb2.googlecode.com/svn/trunk/cEXWB.cs for example code.
Faced with this same problem I created my own solution. You can see it here:
Reference an image imbedded in a WPF application from within an HTML file used as help content