I have seen a lot of discussions going on and people asking about DataGrid for WPF and complaining about Microsoft for not having one with their WPF framework till date. We know that WPF is a great UI technology and have the Concept of ItemsControl,DataTemplate, etc,etc to make great UX. Even WPF has got a more closely matching control- ListView, which can be easily templated to give better UX than a traditional Datagrid like display. And I would say a readymade DataGrid control will kill or hide a lot of creativity and it surely will decrease the innovations in User Experience field.
So what is your opinion about the need of DataGrid in WPF as a Framework component? If you feel it is necessary then is it just because the world is so used to the DatGrid way of data display for many years?
Some other threads having the discussion about DatGrid are here and here
Link to WPF ToolKit - Latest WPF DatGrid
DataGrids are excellent for displaying large amounts of tabular data bound to a backing store.
But what happened in the WinForms world was that people often used them for everything that required a multi-element scrolling list. Souped-up third-party DataGrids soon became available that allowed columns and fields to contain buttons and ComboBoxes and icons, etc.
The DataGrid became a workhorse because there was a need for something it could be coaxed into behaving like. Similar happened to DataTables before generic collections came along--and when you're using lots of DataTables, presenting it in the UI with a DataGrid is the path of least resistance.
I think that when WPF came out, a lot of programmers like me were still thinking in this fashion, and sought out WPF ports of the DataGrid concept.
Can't think of a better control to display tabular data, especially in business apps where you don't want to reinvent the wheel by templating/developing a (Headered)ItemsControl to make it behave like the good old DGV. I'm sure you saw this.
Nobody is disputing that you can make a DataGrid control in WPF yourself. The same can probably be said about WinForms, although it would be more difficult. I've implemented some functionality with ListView - presenting tabular data is easy, you could even say it's well supported. However, the amount of code, manually written code, needed to make an editing ListView is enormous.
The business applications usually require editing of many tables, and you don't want to be creative, you want to be quick. That's why DataGrid is needed in my opinion.
Yes DataGrids will never go away as essential business UI components. People love their spreadsheets and we want to share in that love!
Note that MS are shipping these extra controls - they have created the WPF Toolkit on CodePlex to provide a fast-turnaround, open-source style of deployment.
It already includes a DataGrid and Calendar.
Yes it is!
Among many other controls that ms failed to deliver. (Datepicker, NumericControl)
MS should first give us the tools to get the job done, that is the least i expect from a programming enviroment with the hype of wpf.
It is essential, but you can achieve nearly the same effect with a ListView that is using a GridView, can't you?
After working with WPF for about 2 years now. I would say that a DataGrid is really just a glorified ListBox (since [almost] everything in WPF is styleless).
One could style a ListBox to take an Entity of some sort and show a "record" control for each entry. Depending on how flexible these are made, they could automatically adjust based on the entity passed.
Related
We need to get rid of DevExpress Bootstrap Controls for ASP.NET Core from project.
What would be the easiest/cheapest/feastet solution?
To simply rewrite everything with a different framework like Angular/Vue/React?
Maybe there is a known framework/method of migrating to DevExpress ASP.NET Core Controls? Or to something else?
How many controls were used from DevExpress?
If you only used a few controls, then you only need a few replacements.
I would not call purchase of some controls from DevExpress a whole "framework", but that of only purchasing some controls to use with your project.
So, does the project use 3-5 or 50 of those DevExpress controls? (by using, I mean DIFFERENT kinds of controls).
If you only used a few, say like their GridView, then you would only need to find a replacement for their gridview control, or simply use the built-in one, and fancy it up with some css, and addtional options. (I would make a user control).
So, you want to determine what the controls used did, how many different controls were used, and then find some controls that have a great look and feel that you like.
Their grid controls are VERY nice, since they have some "really" nice filter options for the header of that grid control.
So, you need to find some control replacements, but how many did the project use will quite much determine scope here.
So, in place of say their tab control, then consider using the jQuery one. As noted, I would wrap say the jQuery.UI tab control into a user control, so then you can just drag + drop in that jQuery.UI "tab" control in place of the devExpress one.
Same goes for the multi-select combo box (dropdown list).
So, either you cobbile together some replacements of your own, or you find some replacemetns, or you buy some more controls from another vendor.
The challenge and issue will of course be that each of their controls has a specific object and event model.
However, that's not really any different then say if you started used sweet-alert, and now want to replace sweet-alert say with some jQuery.UI dialogs.
I would say that the real challenge of replacing their controls is often not so much finding a replacement, but finding something that has a great look and feel. The main huge wonderful bonus of the devExpress controls tends to be their look and feel. In other words, they had someone with REALLY good taste in terms of look and feel.
I mean, for years I used the ajaxtoolkit. (free, open source). it was and still remains a fantastic set of controls. The pop dialog, the tab control, the multi-select combo box, the HTML editor?
They are all great, but their HUGE downside is not the features, but the controls from that free toolkit look like something from the 1980's!!!
The popular jQuery.UI? Same thing, the controls look ugly and something designed by a un-employed rodeo clown living in a trailer park.
There is a HUGE but BEYOND huge reason that bootstap is so popular.
Know the answer?
Why of course bootstrap is popular for ONE big HUGE massive SIMPLE reason:
Bootstrap has a fantastic look + feel. (zero other reasons for bootstrap being popular!!).
If you ever hired a graphic artist to re-work the look and feel of your web site? Guess what? Their resulting work and suggestions will look like the default of bootstrap!!!
So, someone in the print and graphic design industry or someone with VERY good talent and great taste created the bootstrap system. So, when you use bootstrap, then you get fantastic looking results, results that normally would take a full time graphic artist on your staff.
Regardless, we are wondering off topic here.
The main issue you have to determine is how many controls were used from devExpress. Most of their controls do follow a similar object model as the base controls found in asp.net webform controls.
So, for example, jQuery.UI controls has a great set of features (a great set of UI components), but they look way too dated and old fashioned.
The issue you have is not that you want to replace some of the devExpress controls you used, but how much work it would be to replace say a dev-express "gridview" with another different grid control. Every single one of those controls used will not only require you to spend HUGE amounts of time finding a replacement, but I think the LARGER issue is finding something that don't look like it was created by someone living in mom's basement, or by that drunken un-employed rodeo clown that does not belong in our industry.
your issue is not finding some replacement controls, your issue is how much code and money (time and resources) you have available to replace those controls.
You can no more change a bunch of code in c# to then using say client side JavaScript can then you take some Pascal code, and covert that code to vb.net code.
There no more a replacement for those controls from dev-express then there is deciding tomorrow to re-write some server side code in vb.net to now being client side JavaScript code.
In fact, what I am quite much telling you?
How the computer and IT industry has worked for 50+ years has NOT change one bit, and it not change one bit if you decide to rip out some existing controls and replace them with different controls.
Its possible you are asking for something you never seen, never heard of, and thus are imagining some magic wand here, but those don't exist in our industry either, do they?
As I noted, for quite some time, I used the AjaxToolKit. Turns out that jQuery.UI has near EVERY the same kind of controls available. But, the massive difference is jQuery.UI controls are client side ones, but worse yet, they don't work the same as the AjaxToolKit ones. In other words, there is a nice "tab" control in AjaxToolkit, and there is a nice tab control in jQuery.UI. So, they both are tab control, but THEY are VAST different in their operations, how you use them, how they work.
However, both the jQuery.UI and the AjaxToolkit tab control?
My gosh, do they look like crap.
At least the jQuery.UI one can be easy bootstrapped styled.
Again, note how we not really now back to a JUST having a control replacement, but one that looks VERY nice and VERY tasteful out of the box, and a control that should take zero efforts on your part to obtain that great look and feel.
Want to know what product has those great looking controls and great look and feel out of the box?
the DevExpress ones!!!
I've spent some time working on WinForm user and custom controls. However, in the back of my mind are the increasingly loud voices saying that WinForm technology is obsolete, and that WPF is the future on the desktop.
I've only looked superficially at WPF. Can anyone comment about if WinForm user controls can be used at all on WPF, and how different WinForm user controls are from WPF user controls?
Most of the controls I'm working on do some type of owner-draw as opposed to child controls being dropped onto the control. I'm just wondering how much of this code will be reusable under WPF.
It is certainly possible to use WinForms controls in a WPF application using the WindowsFormHost control. As usual, there are a few caveats. In particular, the two control types don't overlap well.
However, doing so seems that it would prevent you from taking advantage of many (if not nearly all) of the benefits of switching to WPF in the first place. If you have a large code base that's working for you, I'm not sure why you feel you need to migrate. There will always be something newer that comes along. The real battle is figuring out whether it's really better, at least for your particular situation.
Mandatory disclaimer: I'm far from an expert on WPF and apparently quite a bit less jaded on WinForms than many developers are. So perhaps my advice should be taken with a grain of salt, but I think it's worth considering nevertheless.
Your controls will be reusable (through WindowsFormHost, as Cody suggested). However, I'd not bank on being able to port your code across to WPF. The fundamental programming model is quite different (WPF relies heavily on data binding and thus benefits from very different code-behind), as is the rendering model (WPF doesn't use GDI+). The best way to approach most controls in WPF is to use the built-in templating; other than custom layout panels (which isn't really "drawing"), I've found nothing so far that requires custom draw methods in controls.
It'd certainly be a waste to create a WPF application just to host your WinForms controls. WPF may (or may not!) be "the future" but that doesn't mean you should throw away what you've got on a whim.
You say you've only looked superficially. If you think it might be worth investment, why not do an R&D project to prove how the integration might work on a small part of the system?
Well we are considering to move from WinForms to WPF, what pitfalls does WPF have? And we got component one's flexgrid is there any wpf grid that has the same functions? one nice thing with it is that you can implement your own draw method for the cells... It can merge cells print and save to many file formats..
In general, WPF development is very different from WinForms. You should expect it will take some time to learn the new technology (or you might even need to hire new developers =)).
WPF approach is in many ways better than WinForms' one: check out styles and triggers, data binding, control templating, eventing model.
I would recommend you to start exploring it, but wait for the WPF 4 (and the boring MSDN page) to start the actual migration, because it is going to be even better and close some of the very annoying gaps.
First of all, WPF works pretty different from Windows Forms and likely requires a different approach on how to structure and design the application. At least it works way better if you do it the way it was conceived.
As for single Windows Forms controls, this shouldn't be a problem. There is a WindowsFormsHost which enables you to include Windows Forms controls in WPF.
The change from winforms to WPF is not a change I'd reccommend unless you have specific requirements which WPF fulfills - WPF is not intended to be a replacement, simply an alternative which is more suited towards graphically rich applications.
If you do have a specific requirement then you also might want to consider embedding WPF controls into winforms applications, rather than converting your entire application.
The learning curve is slow to get going, but once you get the idea it all starts to make sense. We have "Pro WPF in C# 2008" book floating round the office and its been a great help. Of course most things get googled to find an answer, but to find out why something is done the way it is this book was a great hope - to me anyway.
There are some annoying features but its still WPF is still quite new. Like most things, if you come across a problem someone has likely come across it before and there is an answer out there!!
J
Take a look here for a datagrid: http://wpf.codeplex.com/Release/ProjectReleases.aspx?ReleaseId=29117
The main hurdle with WPF is simply the huge amount of new stuff to learn (if you wish to use it properly). I'd think twice if you're on a tight schedule, but it might be worth it if you have 6 months to spare...
Speaking from just my experience, moving from Windows Forms to WPF took some re-learning. A few months into the transition most changes made total sense. WPF removes much of the frustration associated with using Windows Forms. It allows for a truly rich UI development experience especially when working in tandem with designers. I strongly recommend WPF Illustrated by Daniel Solis as a learning aid.
With reference to the grid, Syncfusion offers a WPF grid control that implements the features you have asked for. It implements true virtual mode with cell level customization, printing and export to multiple formats including Excel. Disclaimer - I work for Syncfusion.
I'm designing data-oriented application in Silverlight 3 and I'm wondering if is it worth using new DataForm control. It looks really awesome on PowerPoint slides but I have no idea how it is in real life.
I need to achieve following behaviours:
group model's fields to areas, for instance separating groups using horizontal lines or naming group of fields,
place 2 or 3 input controls in exactly one row, for example: country-dropdown, zip textbox and city textbox,
multilingual validation errors,
a few readonly fields in edit mode,
posibility to hide fields in dataforms,
displying a helper button for showing modal popup window with dictionary/grid view.
I'd like to build it using Prism and RIA services.
Has anybody any experience to share?
I have tried using the DataForm in a couple of places in my current project. Spent several days tweaking the various properties and attributes on my classes and found that it never did quite work the way I wanted it to. The demos that are on the web look great but they don't have 'real world' scenarios and are incomplete. So, I wouldn't recomend the DataForm for complex scenarios.
My favourite feature of the DataForm control is that it works "out of the box". That is, you can plug one on your user interface, bind it to your data classes, and have it working with a minimal amount of code. Of course you need to further tune both the behavior and the appearance of the form (by using attributes on the data classes and/or properties on the form control itself), but for feasibility studies or for early usage testing it is usually enough (and very useful) to have it working quickly with the default behavior.
By the way this is a good resource to get started with the DataForm: http://www.silverlightshow.net/items/Creating-Rich-Data-Forms-in-Silverlight-3-Introduction.aspx
I am very new to WPF, about 4 hours new. I am coming from ASP.net and Masterpages.
I was looking at examples of Control Template that can used to template a window so all windows look the same.
Other post
Can some direct me to an example of how it is accomplished or sample code from start to finish?
Second part:
Is the ControlTemplate the best way to go about building WPF windows client applications? What is best practices in architecting WPF windows applications.
Thanks
There really isn't a "best" way to architect WPF UIs. It all depends on the user experience your application will have.
If you want a very web-like experience you are probably better of using the pages constructs. Otherwise if you have windows, but want a common header, you may just want to make a control template for that. Maybe you need separate windows or maybe you just need to have a sub part of a grid panel change content depending on state... There are different ways to do things that are more or less suited to the type of client experience you want.
Although there are some best practices in relation to using MVC/MVVM design patterns, there isn't a "best" way to style and theme your controls. I don't consider WPF as friendly to newcomers as WinForms were, but at the same time it seems a lot more powerful in the long run. What might help you out are some basic levels of theming:
Styles: these are mainly aesthetic changes to the look and feel of basic controls and elements with some very basic support for triggering things like mouse cursor roll over. They are similar to CSS on webpages.
Control Templates: these are the more heavyweight versions of styles where you actually reconstitute a control so that, say a button can have a textbox inside of it. Where styles work on a logical level where something like a button is the most atomic element, control templates can drill down further into controls so that the border, background, text, etc of a button are seen as separate elements instead of one atomic part.
Data Templates: A more focused version of control templates meant to customize how data items in lists are drawn. If you have a bunch of pictures you don't want the file name to show up in the listbox, you'd rather have the image itself. A data template lets you accomplish this kind of thing.
So you have to ask yourself when you say, "Make all windows look the same," do you mean changes are merely aesthetic/looks (styles), customizing how a collection of items are displayed (data/item templates) or altogether changing how a standard control looks and behaves or making sure the layout of controls on a page are the same across multiple windows/pages (control templates)?
Finally, the "end to end" of the other post you linked to is pretty simple. You take the control template there, and under your tag you simply add Template={StaticResource MyTemplateName} and the template is applied. This article on MSDN is a decent intro to control templating.