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  • Using MVVM with Office365 and SharePoint 2010 REST API

    - by Sahil Malik
    SharePoint 2010 Training: more information I love JavaScript – people had pronounced this language dead a long time ago. But just like a chicken – which you eat before it’s born and after it’s dead, JavaScript – is being eaten all over the technical world, long after it’s dead! How nice! The coolest thing about JavaScript is that, There is no need for separate ActiveX controls, it is part of HTML/Browser It can interact with other DOM elements very very naturally It’s safe. And  it’s backwards and future compliant. It is no surprise thus that a number of libraries have emerged helping us work with JavaScript. But, JavaScript is not like C#. Notably, it has some biggies missing. For instance, Read full article ....

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  • ASP.NET MVVM Handling multiple Data Transfer Objects on a single page

    - by meffect
    I have an asp.net mvc "edit" page which allows the user to make edits to the parent entity, and then also "create" child entities on the same page. Note: I'm making these data transfer objects up. public class CustomerViewModel { public int Id { get; set; } public Byte[] Timestamp { get; set; } public string CustomerName { get; set; } public etc.. public CustomerOrderCreateViewModel CustomerOrderCreateViewModel { get; set; } } In my view I have two html form's. One for Customer "edit" Http Posts, and the other for CustomerOrder "create" Http Posts. In the view page, I load the CustomerOrder "create" form in using: <div id="CustomerOrderCreate"> @Html.Partial("Vendor/_CustomerOrderCreatePartial", Model.CustomerOrderCreateViewModel) </div> The CustomerOrder html form action posts to a different controller HttpPost ActionResult than the Customer "edit" Action Result. My concern is this, on the CustomerOrder controller, in the HttpPost ActionResult [HttpPost] public ActionResult Create(CustomerOrderCreateViewModel vm) { if (!ModelState.IsValid) { return [What Do I Return Here] } ...[Persist to database code]... } I don't know what to return if the model state isn't valid. Right now it's not a problem, because jquery unobtrusive validation handles validation on the client. But what if I need more complex validation (ie: the server needs to handle the validation).

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  • APress Deal of the Day - 13/Apr/2012 - Pro WPF and Silverlight MVVM

    - by TATWORTH
    The APress $10 deal of the day for today is "Applied WPF 4 in Context" (http://www.apress.com/9781430234708) starts with a simple introduction to WPF and then shows a complete WPF application from sketch to completed code. This APress web site states "This book can be used by a junior developer to learn WPF and understand how to architect a layered application, and it can also be used by a senior developer as a reference for developing scalable WPF applications. " - this summerises the book very effectively as it is indeed an excellent book both for learning WPF and as a reference for development. I recommend it to all Dot Net development teams.

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  • MVVM Its Not Kool-Aid*

    [ Revised with C# and VB.NET code] Okay, first, understand that Im in the position of running through the streets yelling at folks cmere! ya gotta see this! and what Im pointing to is the incredible new invention of a laptop computer. Something that is undeniably amazing and cool, but everyone else on my block has [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • MVVM Its Not Kool-Aid*

    [ Revised with C# and VB.NET code] Okay, first, understand that Im in the position of running through the streets yelling at folks cmere! ya gotta see this! and what Im pointing to is the incredible new invention of a laptop computer. Something that is undeniably amazing and cool, but everyone else on my block has [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • charging light on in laptop with battery removed.

    - by Jus12
    I hope this is the right place for this question. I have an LG R310 laptop. Recently the adapter connector started playing up, so I got a second hand replacement adapter of the same rating. The adapter was a cheap type (I know I made a mistake) and faulty.. it made a low buzzing sound when plugged in and not connected to the laptop. It didn't make the noise when connected to the laptop. Foolishly I used this adapter for several weeks. One day the adapter stopped working. The led didnt work and it was not charging. It had also drained the laptop's battery to 0%. I then got an original replacement adapter. Now I can use the laptop on power but the battery does not charge. The charging light does not come on. The interesting thing is that when I remove the battery the charging light comes on and stays on after I insert the battery back (the battery still does not charge). I need to know if the faulty adapter damaged the motherboard or if its just a problem with the battery. I have a multimeter and I prefer not to open the laptop. Thanks in advance.

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  • Looking for a "light" compositing manager for GNOME

    - by detly
    I have an HP Pavilion DM3 (graphics is nVidia GeForce G105M), running Debian Squeeze with GNOME 2.30. My preference for DE is Gnome + Metacity + Nautilus. I'd like to use Docky, but it requires compositing. So I'm looking for a relatively "light" compositing manager. I realise that "light" is ambiguous, but I basically want something that won't chew through my notebook's batteries because of CPU or GPU usage. I know that Metacity is capable of compositing, but as far as I'm aware it's still testing. Some people report that it's smooth and lightweight, others claim that it eats up processor time. I've also seen references to a problem with nVidia, but no actual details. I'm not averse to Compiz, but I haven't used it before and I don't know what to expect in terms of "weight." And maybe there's something else I haven't heard of. So can anyone recommend anything? Or dispel my idea that Metacity is not the right tool for the job? (Originally posted on GNOME forums.)

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  • Power supply switch like stays off motherboard light turns on

    - by Sion
    I bought a computer at the thrift store yesterday. The computer powered on without any error beeps. Getting it back to the house determined that the CD and hard drive needed to be changed. Put in a populated hard drive to check, the computer turned on and seemed to function. Put in a new CD drive, and just put in a new Hard drive. I plugged it in to check and I noticed that the light for the power supply switch did not come on. But I did notice that the light on the motherboard is lit. and I could not turn the computer on. To help troubleshoot it I unplugged the CD and Hard drive. then re-plugged the power supply and switched it on and off. Nothing changed. Parts: Motherboard: Digital Home PSW DH deluxe Power Supply: FSP-Group FX700-GLN Did I accidentally unplug something while installing the hard drive? Is the Power supply fried somehow?

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  • Light Blue Monitor Screen

    - by SixfootJames
    I have seen this before with an older monitor that over time, the monitor colours change to a light blue haze. This has started happening with an older monitor of mine now (A GigaByte Monitor) and although none of the pins are bent and it's a brand new machine, there is no reason, other than aging that it should show the light blue screen. Perhaps it is just time for a new monitor, but if there is a way of saving it still. I would appreciate the insight. Perhaps there is something I have not tried, perhaps it has something to do with the new machine instead of the monitor? I had the monitor plugged into two other machines over the weekend and didn't have this problem. So I am not quite sure what to make of it. Many thanks! EDIT: I must also add that when I plugged the monitor into the older machines, I had the VGA converter attached to the end of the newer DVI output. Which, when plugged into the newer PC, I don't need of course.

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  • Dynamic/Generic ViewModelBase?

    - by Shimmy
    I am learning MVVM now and I understand few things (more than but few are here..): Does every model potentially exposed (thru a VM) to the View is having a VM? For example, if I have a Contact and Address entity and each contact has an Addresses (many) property, does it mean I have to create a ContactViewModel and an AddressViewModel etc.? Do I have to redeclare all the properties of the Model again in the ViewModel (i.e. FirstName, LastName blah blah)? why not have a ViewModelBase and the ContactViewMode will be a subclass of ViewModelBase accessing the Entity's properties itself? and if this is a bad idea that the View has access to the entity (please explain why), then why not have the ViewModelBase be a DynamicObject (view the Dictionary example @ the link page), so I don't have to redeclare all the properties and validation over and over in the two tiers (M & VM) - because really, the View is anyway accessing the ViewModel's fields via reflection anyway. I think MVVM was the hardest technology I've ever learned. it doesn't have out-the-box support and there are to many frameworks and methods to achieve it, and in the other hand there is no arranged way to learn it (as MVC for instance), learning MVVM means browsing and surfing around trying to figure out what's better. Bottom line, what I mean by this section is please go and vote to MSFT to add MVVM support in the BCL and generators for VMs and Vs according to the Ms. Thanks

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  • How do I blend 2 lightmaps for day/night cycle in Unity?

    - by Timothy Williams
    Before I say anything else: I'm using dual lightmaps, meaning I need to blend both a near and a far. So I've been working on this for a while now, I have a whole day/night cycle set up for renderers and lighting, and everything is working fine and not process intensive. The only problem I'm having is figuring out how I could blend two lightmaps together, I've figured out how to switch lightmaps, but the problem is that looks kind of abrupt and interrupts the experience. I've done hours of research on this, tried all kinds of shaders, pixel by pixel blending, and everything else to no real avail. Pixel by pixel blending in C# turned out to be a bit process intensive for my liking, though I'm still working on cleaning it up and making it run more smoothly. Shaders looked promising, but I couldn't find a shader that could properly blend two lightmaps. Does anyone have any leads on how I could accomplish this? I just need some sort of smooth transition between my daytime and nighttime lightmap. Perhaps I could overlay the two textures and use an alpha channel? Or something like that?

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  • light text editor for csv file? (on windows)

    - by Radek
    could anybody suggest a light (small, fast) text editor that can handle columnar view of csv files? save quote character to all fields, even if not 'necessary' OpenOffice Calc is bit big for my old laptop. My favourite Notepad++ cannot do the columnar view. And it seems to me that Sharp Tools Spreadsheet cannot import csv file. GoogleDoc convert some date fields by default which I do not want and it is really not fast and easy way how to edit csv.

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  • Good light debian derivates-distro for VIA C3 processor

    - by stighy
    Hi, i would like to install a good distro on a VIA C3 Samuel system. It would be a light server (with a graphical environment) useful for print server, file server etc. I've tried to install crunchbang linux but it tell me that my processor not support cx8 and cmov instructions. So i'm trying Knoppix.. but i still have some problem ... Do you know other good lightweight distro debian derivates that support via c3 processor ? Thanks

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  • Hard Drive Light Emulator

    - by ProfKaos
    I've just got a new Dell Inspiron, and I'm a little disconcerted without the reassurance of a flashing hard drive light, especially with long installs. Is there something that can reveal HDD activity onscreen, e.g. in the system tray?

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  • How AlphaBlend Blendstate works in XNA when accumulighting light into a RenderTarget?

    - by cubrman
    I am using a Deferred Rendering engine from Catalin Zima's tutorial: His lighting shader returns the color of the light in the rgb channels and the specular component in the alpha channel. Here is how light gets accumulated: Game.GraphicsDevice.SetRenderTarget(LightRT); Game.GraphicsDevice.Clear(Color.Transparent); Game.GraphicsDevice.BlendState = BlendState.AlphaBlend; // Continuously draw 3d spheres with lighting pixel shader. ... Game.GraphicsDevice.BlendState = BlendState.Opaque; MSDN states that AlphaBlend field of the BlendState class uses the next formula for alphablending: (source × Blend.SourceAlpha) + (destination × Blend.InvSourceAlpha), where "source" is the color of the pixel returned by the shader and "destination" is the color of the pixel in the rendertarget. My question is why do my colors are accumulated correctly in the Light rendertarget even when the new pixels' alphas equal zero? As a quick sanity check I ran the following code in the light's pixel shader: float specularLight = 0; float4 light4 = attenuation * lightIntensity * float4(diffuseLight.rgb,specularLight); if (light4.a == 0) light4 = 0; return light4; This prevents lighting from getting accumulated and, subsequently, drawn on the screen. But when I do the following: float specularLight = 0; float4 light4 = attenuation * lightIntensity * float4(diffuseLight.rgb,specularLight); return light4; The light is accumulated and drawn exactly where it needs to be. What am I missing? According to the formula above: (source x 0) + (destination x 1) should equal destination, so the "LightRT" rendertarget must not change when I draw light spheres into it! It feels like the GPU is using the Additive blend instead: (source × Blend.One) + (destination × Blend.One)

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  • How AlphaBlend Blendstate works in XNA 4 when accumulighting light into a RenderTarget?

    - by cubrman
    I am using a Deferred Rendering engine from Catalin Zima's tutorial: His lighting shader returns the color of the light in the rgb channels and the specular component in the alpha channel. Here is how light gets accumulated: Game.GraphicsDevice.SetRenderTarget(LightRT); Game.GraphicsDevice.Clear(Color.Transparent); Game.GraphicsDevice.BlendState = BlendState.AlphaBlend; // Continuously draw 3d spheres with lighting pixel shader. ... Game.GraphicsDevice.BlendState = BlendState.Opaque; MSDN states that AlphaBlend field of the BlendState class uses the next formula for alphablending: (source × Blend.SourceAlpha) + (destination × Blend.InvSourceAlpha), where "source" is the color of the pixel returned by the shader and "destination" is the color of the pixel in the rendertarget. My question is why do my colors are accumulated correctly in the Light rendertarget even when the new pixels' alphas equal zero? As a quick sanity check I ran the following code in the light's pixel shader: float specularLight = 0; float4 light4 = attenuation * lightIntensity * float4(diffuseLight.rgb,specularLight); if (light4.a == 0) light4 = 0; return light4; This prevents lighting from getting accumulated and, subsequently, drawn on the screen. But when I do the following: float specularLight = 0; float4 light4 = attenuation * lightIntensity * float4(diffuseLight.rgb,specularLight); return light4; The light is accumulated and drawn exactly where it needs to be. What am I missing? According to the formula above: (source x 0) + (destination x 1) should equal destination, so the "LightRT" rendertarget must not change when I draw light spheres into it! It feels like the GPU is using the Additive blend instead: (source × Blend.One) + (destination × Blend.One)

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  • Use android.R.layout.simple_list_item_1 with a light theme

    - by Felix
    I have learned that when using android:entries with a ListView, it uses android.R.layout.simple_list_item_1 as the layout for a list item and android.R.id.text1 as the ID of the TextView inside that layout. Please, correct me if I'm wrong. Knowing this, I wanted to create my own adapter but use the same layout resources, in order to provide UI consistency with the platform. Thus, I tried the following: mAdapter = new SimpleCursorAdapter( getApplicationContext(), android.R.layout.simple_list_item_1, mSites, new String[] { SitesDatabase.KEY_SITE }, new int[] { android.R.id.text1 } ); Unfortunately, because I am using a light theme (I have android:theme="@android:style/Theme.Light" in my <application>), the list items appear with white text, making them unreadable. However, when using android:entries to specify a static list of items, the items appear correctly, with black text color. What am I doing wrong? How can I make my dynamic adapter use the standard layout but work with a light theme?

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  • Make an iPhone InfoButton light/dark based on color behind it

    - by Paula
    How do I detect what color is under the InfoButton... so I can change the button from DARK to LIGHT? I set my view's color... but how do I tell if it's "kind of light" or "kind of dark"? Besides... I can't change the info-button from light to dark anyway. (read only) Ugh. Shouldn't Apple have some kind of a simple "cmdButton.doThisExtremelyCommonThingForMe = TRUE" statement? InfoButtons are useless if you can't even see them. (Or how would I put an image behind the button to make it stand-out more?)

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  • How to program three editions Light, Pro, Ultimate in one solution

    - by Henry99
    I'd like to know how best to program three different editions of my C# ASP.NET 3.5 application in VS2008 Professional (which includes a web deployment project). I have a Light, Pro and Ultimate edition (or version) of my application. At the moment I've put all in one solution with three build versions in configuration manager and I use preprocessor directives all over the code (there are around 20 such constructs in some ten thousand lines of code, so it's overseeable): #if light //light code #endif #if pro //pro code #endif //etc... I've read in stackoverflow for hours and thought to encounter how e.g. Microsoft does this with its different Windows editions, but did not find what I expected. Somewhere there is a heavy discussion about if preprocessor directives are evil. What I like with those #if-directives is: the side-by-side code of differences, so I will understand the code for the different editions after six months and the special benefit to NOT give out compiled code of other versions to the customer. OK, long explication, repeated question: What's the best way to go?

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  • Light-weight, free, database query tool for Windows?

    - by NoCatharsis
    My question is very similar to the one here except pertaining to a Windows tool. I am also referencing this table and what I found here with a Google search. However, I have no idea which tool would best meet my (very basic) purposes. I am currently using Excel with a basic ODBC connection string to query my database at work. However, Excel is pretty memory-heavy and a basic query tends to throw my computer into a 30 second stall-a-thon. Is there a free tool out there that is light-weight and can serve the same purpose when provided an ODBC connection and a SQL query? Also would prefer that it easily copies over to a spreadsheet as needed.

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  • Hardware issue: UI freezes and hard drive light goes solid several times per hour

    - by alchemical
    I have a workstation that has been acting up for the last few weeks. It currently has Windows Server 2008 R2 installed on it, and 2 HDD mirrored. A few times per hour the screen will freeze up, applications will say "not responding", sometimes the screen will turn a lighter shaded color--at the same time the HDD light is on solid. This lasts anywhere from 10 to about 50 seconds. Could this be something with one of the drives or the mechanism keeping the mirror in place? Any other ideas?

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  • What is Light Peak

    - by Jonathan.
    I've heard this a lot recently, todo with Apple and Intel. Some says it's a protocol, others say it's fibre optic, and others say it's copper. One source even said it was a "wireless wire". Apparently it can carry data, but not video streams, surely the cable can't know the difference between 1s and 0s representing data, and 1s and 0s representing video streams. Or it will replace all the wires we currently have except power, another place said it is for inside laptops. Those are just examples so I haven't given any sources, I just want to know what on Earth Light Peak is?

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