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I have an upcoming project at work to develop reports displayed in a web page. I've been pointed to SSRS (or possibly Power BI) to build them but I don't really see the point of using it instead of just using web services to send data out to a Javascript front end.
The requirements include:
Sort the data
Filter the data
Group the data
Hide/Show columns
Save user preferences
Output to other formats (.pdf, .xslx)
I haven't worked with SSRS much so maybe I'm missing something, but it seems that we'd have more flexibility in the look/feel of the page, the functionality, and how the data is loaded if we ignored SSRS and rolled our own with little extra effort.
What exactly would be the advantage of using SSRS in this case? Am I right to want to architect my own solution from scratch?
What exactly would be the advantage of using SSRS in this case?
It's mostly that you wouldn't have to build and maintain the content in custom HTML and JavaScript. It's a typical build/buy tradeoff, and one that's often driven by the desire to have a high velocity of change, and to enable single person, and perhaps even a non-developer, create or maintain the reports.
Also .pdf and .xslx rendering are non-trivial, and typically require separate design and layout.
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It is understood from Mr.Avik Sengupta youtube video on NLP, that:
a) HTTP.get(url) cannot be used to scrape web pages that uses javascript to call encrypted or obfuscated json.
b) Blink can to be used in such cases.
I am new to Blink and coulldn't find any useful documentation/exmple in this regard!
Please guide me in using Blink to scrape such webpages.
It is JavaScript not jsp
If you are new into subject try first Selenium (it should work via PyCall). There are several great tutorials for Selenium and going through them will allow to understand web driver architecture
Once you have experience with Selenium, the Blink documentation at https://juliagizmos.github.io/Blink.jl/latest/communication/ should be quite obvious. You will basically need to navigate to a web page and than use JavaScript to obtain its elements.
Last but not least - for this type of projects always check whether scraping is legal and ethical in your use case.
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Let me first explain what I am trying to achieve... I would like to develop a website that offers some product. This product consists of multiple parts (for example, say a car). The user selects different parts and an image is generated dynamically to preview what the product would look like.
I know how to set the website up, manage database connections, and do all of that. My question is simple: Is there an existing framework that would help me to manage the manipulation of the images easily? My intention is to have separate images of each part and to overlay them in a determined fashion to develop the full product.
I think this would be possible with some fancy manipulation of the basic image controls, but I thought I would see if there was anything to make my job easier. I haven't done much with images in .NET so I don't really know what is available to me as of yet. I am experienced with images in C++ and C.
Note: This is only for research purposes, I am not developing this for any client or job. I just want to see how to do it. I am open to using regular .NET or MVC, depending on which would be most helpful for this.
Thank you for any help that you can offer.
You will need to create a full image of the car but have specific segments which you can identify through code. So your full image can be an "Image Sprite" and then you can show/hide specific chunks as the user is selecting/deselecting those segments. Here is an example that uses CSS to show specific parts of a full image. In that example, the images are separated using CSS, but you would not do that for your case. You would simply hide or show them.
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I would like to hear from anybody who knows any 3rd party components that can consume a RDL file and produce a HTML rendering. The rendering should happen without any dependency on Reporting Services being installed on the back end.
I know of ActiveReports 7, however I do not think they are supporting the latest RDL schema .
Thanks and regards,
Saurabh
I wrote an article about how to render an RDL/RDLC on IIS without SSRS. It comes with all the free code that you would need. I could paste it all here, but it is a lot of code. Here are the highlights: a RDL/RDLC file is simply XML. The ASP.NET report control can run the report (without SSRS) but it requires some weird stuff to wrap the queries. My strategy was to pull the query out of the XML (using XPath) and get any parameters and grab those via a query. Then I use the query(s) to populate a dataset and I use it as a data source. Pretty 101, when you think about it. The article also refers to other articles that show how to generate a PDF (etc) without having to view the report first. It sounds like exactly the stuff that you would need, but it uses the control that comes with asp.net: http://www.codeproject.com/Articles/607382/Running-an-RDLC-SQL-Report-in-ASP-NET-without-SSRS
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I'm looking for automated tools to help me refactor a bunch of CSS files, for example:
Remove unnecessary selectors (e.g. not used inside the page)
detect repeatable rules inside several selectors and suggest a merge
Are there any such tools?
Thanks!
Yes Google Page Speed does this CSS investigation. Link:
http://code.google.com/speed/page-speed/docs/overview.html
not totally automated, but this one works well.
I like the fact that I can see what I'm changing. While I've done UI for 15 years, there's always little things that I notice myself repeating via using this tool. In the long run, doing things a bit manually is going to make me a better developer.
Doing one that looks for unnecessary selectors is a dangerous game. You could do it, but if you ever find yourself doing dynamic and/or ajax injected divs, you'll immediately blow up your page or app using an automated tool. If you do it, make sure it's not something that works on the fly, without some sort of very good testing environment to verify the resulting output. My current corporate clients would never allow me to use any sort of point-of-request tool based on their requirements of 100% tested and verified CSS.
This tool can do automatic css refactoring, though its value in project still need to evaluate carefully.
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I am looking for a free or commercial programme which will let me open up TIFF files in .NET.
Ideally it would open up in a new window, with 2 restrictions 1) That user isnt able to save the file 2) That there is no print button available.
Does anything come to mind ?
I'm not aware of any solution which can totally prevent saving/printing. However there are a few things you can do.
send a partial image to the browser (i.e. limited to 8bpp, scaled image). For instance, if google maps would use a single TIFF, good luck in saving it a screenshot at a time.
send degraded image to browser (i.e. use LibTIFF.NET to read (part of) the tiff, convert it to lossy JPG and send that to the browser.
combination of both
provide a different css for printer device, which leaves out the image.
open a new browser window without controls.
You may find some good solutions based on Silverlight or flash, which provide a higher degree of control on the freedom of the user in the browser. If you are searching for those specifically, please update your question accordingly.
Good luck
ImageMagick supports a lot of stuff, for instance TIF: http://imagemagick.codeplex.com/
It can be used to convert images to other formats.
If I am reading your question correctly (based on the asp.net tag) you actually want a TIFF-viewer for webbrowser? That is unrelated to .Net. To achieve that you'd have to either install a plugin on all the clients or have a JavaScript/Flash/Silverlight app capable of reading and displaying the picture.