I'm studying design patterns.
I wondered what the design pattern of the project was basically created when I created the WinFoam project in the Visual Studio.
what is the design pattern of winform when I create new winform project in visual studio?
I suppose that no pattern is used for Form1.Designer.cs and Form1.cs. It is just boilerplate code. As wiki says:
In computer programming, boilerplate code, or simply boilerplate, are
sections of code that are repeated in multiple places with little to
no variation.
However, when you are creating handler for button click, then Observer pattern is used to connect button and its handler.
Related
I'm new to visual basic and i'm currently trying - and at the moment I've done my entire program using WPF's because I wanted to easily switch through different pages which i've hosted in a single window. Well I've come to a halt because I'm creating a page currently where a customer can enter their information and add it a data base.
Now, I have little experience in coding in visual basic(self taught for 2-3 weeks) and I have no clue how I would go about adding a database, and adding to the data base using WPF's. I have seen some examples of people adding a database, and adding to a data base using Forms.
I was curious if I am able to using WPF's(page) for most of my program, and then switch to a Form when I want to add the customer to a database, then switch back to a WPF(page)?
Yes you can...
If your main project is WPF you need WindowsFormsHost and if your main project is WinForm you need ElementHost. For more information you can read this tutorial.
Im making an wpf application and i need to generate reports and then to print them. I am using CodeReason.Reports library but it is very dificult to me to design the reports with out a designer.
Any one knows if there exist any Flow Document designer, or if there is any way to design it from blend?
Thanks
I don't know the library you are talking about, but I used WPF for creating some report, let's say a minimal report engine, so I think I can give some suggestion to you.
First, learn XAML. Visual studio has a good designer, but I use it just to see what's happening: writing XAML with the good Visual Studio intellisense is much more productive. I can't suggest how to operate with your lib, but with my strategy the document pages are wired by the engine in code, content are produced by user controls: they just live very well in VS designer. I also used an MVVM library to develop in a an code free view way.
So what I learn in y WPF experience: it is a great and powerful environment, you can present thing the way you want, but don't look for a cutting edge designer. The WPF designer is XAML, mastering it is necessary.
I used flow documents in a regex tool I created. I ended up creating a programmatic wrapper over the flow document library which once done was easy to use because it had my target look and feel.
No, AFAIK there is no design tool for flow documents nor does Blend support it. Create a document and provide a wrapper which speaks to that design is your best option if you use flow documents.
I am trying to integrate WPF into a legacy MFC application. I am unable to include the /clr switch to mix managed and unmanaged due to the restrictions of other projects in the solution. I need the WPF window open up as a child window in the main MFC application. I have been investigating different ways for the past two weeks but have hit roadblock with every implementation try. If anyone has successfully integrated this type of implementation, I would appreciate some direction. I have been able to integrate with a Win32 app, but could not translate this to an MFC app. Thanks everyone.
I believe that WPF requires .NET, therefore what you need is to create a separate DLL or EXE for the WPF parts. hat new project could be the container for .NET code and your main MFC would launch this separate project.
You can write a WPF front end that launches C++ apps with the desired command like switches, similar to what Visual Studio 2010 is doing to compile your code and show the results in the output pane. In this way you can avoid having to hack message loop code to support both frameworks .
You may show your Dialog using a COM interface
I'm new to the Windows world, and I think I'm getting lost in the weeds on a problem. I'd love some advice from people with experience with C++/CLI and WPF and XAML.
I have some win32 code, and I need to run a WPF GUI. I found this MS walkthrough sample, which uses C++/CLI. I adapted it to my purposes, and it works great.
Next, I wanted to rip out the programmatic WPF stuff and use XAML instead. This is so I can hand off the XAML to a designer person and take myself out of the UI design loop, where I most assuredly don't belong. After reading the "WPF Interoperation Projects" section of WPF and Win32 Interoperation on MSDN, I decided to go with the XamlReader::Load option and load uncompiled XAML at runtime. My XAML markup is a Canvas UIElement which I programmatically add as a child of my root Grid C++/CLI element. This works great.
Now I want to add event handler to controls in the XAML. This is where I have started to run into trouble. I'm sure that my general ignorance of the Windows world is 95% of what's killing me here.
I started with Rob Relyea's page outlining the various XAML-and-event-handler options.
I decided to try compiling the XAML as a C# DLL. It's basically the same XAML as what I used in the runtime Load case. I instantiate the object and programmatically add as it as a child, just like before. But ... I get nothing but a black window. No exceptions get thrown either. I'm baffled.
My question is, am I even headed down the right path? The page on XAML-and-event-handlers says you can use event handlers defined in uncompiled XAML in .Net Framework 4. Should I bite the bullet and just go to VS 2010 (I'm presently on VS 2008) so I can use .Net Framework 4 and just stick with uncompiled XAML? Are there any gotchas with doing things that way?
Or, if you do think the compiled C# DLL is a reasonable path, do you have any ideas on how I can debug the problems I'm having?
Or, is there a better and completely different approach?
Thanks in advance for your advice.
Polly
I think the right answer for this depends on some issues that only you can decide, but I'll start with the assumption that your C++ code base is big and complex enough that it is worth preserving.
Beyond that the next decision point is do you have UI (perhaps GDI) code in the C++ your preserving or only non-UI code. If you are attempting to preserve only non-UI code then I would consider pushing more UI responsibilty into C#. Perhaps you go so far as to build your views, event handlers, and maybe even view models in C#. This will enable you to take better advantage of the VS tooling.
If you've got extensive UI code in C++ to preserve then your current path makes a more sense. I don't think it will be impossible, but you'll have quite a challenge ahead of you. The key example here is Visual Studio 2010. It is the premiere example of a mixed application and has GDI and WPF side by side unlike any other app I've ever seen or heard of. There is a series of blog posts that I found pretty interesting that describe some aspects of what the Visual Studio team did to achieve this integration at The Visual Studio Blog.
I also came across this video Henry Sowizral on Refacing C++ with WPF in Expression Design that I have not seen myself, but discusses putting a WPF UI on top of an existing MFC C++ app.
Good luck.
I don't have any specific advice on the first part of your question other than to say that putting more responsibility in C# would allow you to build a small stub app if necessary which could go a long way toward diagnosing problems.
Thanks to everyone for the responses. On the matter of getting stuck on the C# DLL, I found this C++/CLI sample: http://msdn.microsoft.com/en-us/library/aa970266.aspx. Using that, I found my error, and was able to load the WPF without problems.
However, the whole motivation for loading the C# DLL was that I had understood that that was the way to attach event handlers programmatically. Following AresAvatar's suggestion, I found that I could use FindName to attach the handlers -- both within the C# DLL, but it also worked with my original loose-XAML approach. So, I didn't need the C# DLL after all!
It's all working nicely now. Again, thanks for all of your help and suggestions.
I'm having a little trouble as I decide how to structure my projects. This question is slightly subjective, but I'm having trouble conceptually.
If I create a wpf blend project (sketchflow right now), it creates two projects, "Project" and "ProjectScreens". Is this the best layout to use?
The issue is, I have classes and code (networking, file i/o, etc.) that I need to reference within the screens (i.e. they click a button, it creates a network connection), and the core code needs to reference the screens. This creates a circular dependency.
I've tried merging them all as a single project, which works, but it stops becoming a sketchflow project at that point.
I guess the big thing, what's the best way to structure this with my core code and my sketchflow prototype?
Check out the Model-View-ViewModel design pattern. You'll find it fits well for WPF (and Sketchflow) projects because it keeps your business logic independent of your UI and supports the binding-oriented development model of WPF.
The SketchFlow project is separated into 2 assemblies so that you can do all of your work in the screens assembly, and then later re-use what is in the screens assembly elsewhere if you want.
The main project is a very simple wrapper that enables the use of the SketchFlow runtime player.