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Mehul Harry is the DevExpress Web Program Manager. Follow him on twitter: @Mehulharry

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  • HTML5 JavaScript DataGrid and PivotGrid Enhancements (v17.2)

    The DevExtreme DataGrid and PivotGrid widgets are getting enhancements for you and your end-users. In the v17.2 release we're adding UI features that help you when working with data in our grids:

    Built-in Search in Header Filter

    The Header Filter is a great way to filter the data in the grid because it gives you all the unique values of the column. However, if there are many distinct values, it can be annoying to scroll through the list trying to find a particular value.

    In the next 17.2 release, we've added a search text box that allows to filter data inside the dxDataGrid and dxPivotGrid's header filters. This gif shows the new feature in action:

    DevExtreme Grid Header Filter

    You can still control whether searching is enabled in the header filter using the dxDataGrid.headerFilter.allowSearch and dxPivotGrid.headerFilter.allowSearch options.

    Built-in Search in Column/Field Chooser

    We've also added the search functionality to the dxDataGrid's column and dxPivotGrid's field chooser:

    DevExtreme Grid Field Chooser

    Customize these features through the dxDataGrid.columnChooser.allowSearch and dxPivotGrid.fieldChooser.allowSearch options.

    Built-in Date-Time Filter for dxDataGrid

    The dxDataGrid’s DateTime columns can be now filtered using the date and time:

    DevExtreme Grid Date-Time Filter

    Additional minor improvements

    • The validationCallback function now provides access to the current dxDataGrid row data via the data parameter when a Custom validation rule is used  
    • The dxPivotGrid field’s sortBy option can now accept the none value to disable local sorting

    Angular, ASP.NET MVC/Core, & More!

    Note that all these new features are available in the DataGrid and PivotGrid Angular components, ASP.NET MVC and .NET Core controls, and jQuery widgets too.

    Try it now

    The new features of our dxDataGrid and dxPivotGrid widgets are included in the v17.2 pre-release that is available via npm right now. Please note that this pre-release may contain some bugs and is not intended to be used in production:

    npm install devextreme@17.2.1-pre-17273

    Learn more about DevExtreme's pre-releases in this blog post.


    What do you think about the grid improvements in the next release? Drop me a line below.

    Email: mharry@devexpress.com

    Twitter: @mehulharry

  • DevExtreme ASP.NET MVC Controls – Improvements & New Features in Data Sources (coming soon in v17.2)

    The DevExtreme ASP.NET MVC Controls provide a powerful data layer to help you read and write data with our controls. The data layer is invisible but serves an important role for your apps. In fact, we've got a great documentation data layer topic that I recommend reading:

    In this blog post, I'll highlight the changes coming to the DevExtreme data layer in the upcoming v17.2 release. We're introducing a set of changes and improvements that are primarily driven by customer feedback.

    New behavior of Url generation of .Mvc() and .WebApi() data sources

    In the v17.1.5 release, I talked in detail about the change to our DataSource URL generation. Please take a look at this blog post that describes our motivation and the changes: DevExtreme ASP.NET MVC Controls: DataSource URL Improvements (17.1.5).

    Since August 2017, many customers have shared projects and code with our support team and it's good to see that many have enabled the new mode and are happy with it.

    Warning: In the v17.2 release, we're changing the default value of the flag controlling that behavior (UseLegacyRouting) to false. Meaning, we don't want to use legacy routing but the new and improved approach. However...

    This could BREAK your existing projects. This potential breaking change can be avoided. However, I recommend that you test your existing projects as we've seen good feedback from many customers. You can test this change using the new flag now by downloading v17.1.5+ release, which is available now.

    If you're not ready for the change when v17.2 is released then simply set the UseLegacyRouting to true:

    For ASP.NET MVC 5 applications, in Global.asax.cs:

    protected void Application_Start()
    {
      DevExtreme.AspNet.Mvc.Compatibility.DataSource.UseLegacyRouting = true;
      // ... the rest of your code ...
    }

    For .NET Core apps, in Startup.cs:

    public void Configure(IApplicationBuilder app, 
                          IHostingEnvironment env, 
                          ILoggerFactory loggerFactory) 
    {
      DevExtreme.AspNet.Mvc.Compatibility.DataSource.UseLegacyRouting = true;
      // ... the rest of your code ...
    }

    In v17.2, all DevExtreme demos and project templates have been updated to use the new routing mode. This, you'll find, works more predictably and in accordance with the standard MVC @Url.Action and @Url.RouteUrl constructs.

    Support for Areas

    Areas are an ASP.NET MVC feature used to organize related functionality into a group as a separate namespace (for routing) and folder structure (for views). Using areas creates a hierarchy for the purpose of routing by ... Areas provide a way to partition a large ASP.NET Core MVC Web app into smaller functional groupings. - Microsoft Documentation

    Also in v17.2, we've added support for 'areas'. So both the .Mvc() and .WebApi() data sources now provide the .Area() configuration option in addition to .Controller() and .Action(). This means that you can now reference API controllers in different areas.

    RemoteController: consume API controllers from a different domain/host

    If API controllers were located on another domain, it was problematic to use them. Customers had to use JavaScript instead of strongly-typed Razor syntax.

    In 17.2 we improve this by introducing a new kind of data source: RemoteController. Basically it is the same as .Mvc() or .WebApi() but instead of specifying routing options (controller, action, etc), you specify direct Urls pointing to anywhere on the web.

    Here's an example:

    @(Html.DevExtreme().DataGrid()
        .DataSource(ds => ds.RemoteController()
            .Key("OrderID")
            .LoadUrl("http://www.example.com/Orders/Get")
            .InsertUrl("http://www.example.com/Orders/Insert")
            .UpdateUrl("http://www.example.com/Orders/Update")
            .DeleteUrl("http://www.example.com/Orders/Delete")
        )
    )

    Updated DevExtreme.AspNet.Data library with new features

    DevExtreme.AspNet.Data, the open-source library used by DevExtreme ASP.NET MVC Controls for data access has been updated to version 1.3 with a number of enhancements:

    • Support for server-side "select" operation (PR #125)
    • Published LoadResult and Group classes (PR #130)

    What do you think about the DevExtreme ASP.NET MVC Controls? Drop me a line below.

    Email: mharry@devexpress.com

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • New Bootstrap Controls for ASP.NET Core 2.0 (CTP release)! - Join the pre-release party

    Earlier this year, we released the DevExpress ASP.NET Bootstrap controls for the ASP.NET WebForms framework. We developed these new set of innovative controls to provide a great experience when used within the Bootstrap framework. If you're not familiar with our Bootstrap controls, please take a look at these past blog posts.

    After releasing these new controls for WebForms, one of the biggest questions we got was, "What about ASP.NET Core and MVC?"

    Well, I'm here to announce another great innovative web offering from DevExpress ...

    ASP.NET Core...Cross platform

    Version 2.0 of the new ASP.NET Core framework was recently released and I'm happy to announce our new set of controls specifically for this new framework: 'the DevExpress ASP.NET Bootstrap controls for ASP.NET Core 2.0'. That's the unofficial name for now.

    These new controls have a new API and architecture that takes advantage of the ASP.NET Core framework. However, they do keep a similar set of features as the existing ASP.NET Bootstrap controls for WebForms.

    The combination of ASP.NET Core framework and DevExpress Bootstrap controls means:

    1. Write modern web application using C# (or your favorite supported .NET language)
    2. Cross-platform support: Linux, MacOS, and Windows
    3. Use a wide set of Bootstrap themes (https://themes.getbootstrap.com/)
    4. Full support for MVC features: Data Annotation attributes, model binding, unobtrusive validation, and more.
    5. DevExpress elegance, power, ease, and features!

    Help Test CTP Release

    The first release of these controls is a CTP (community technology preview). It's available today and we'd love for you to test them in your ASP.NET Core 2.0 projects.

    By testing the new controls and providing us feedback, you'll help us improve them before the final release.

    Getting started

    We've made the getting started experience easy using our NuGet server. Take a look at this step-by-step guide:

    https://demos.devexpress.com/aspnetcore-bootstrap/GettingStarted

    Then play around with the online demos:

    Provide feedback

    Once you've integrated them into your project, please provide us feedback via the excellent DevExpress Support Center.

    What's included?

    Nearly all 20+ of the existing DevExpress ASP.NET Bootstrap controls are available in this CTP release. This includes controls like the GridView, Navigation controls, Editors, and more. However, the FormLayout, UploadControl, and the Charts are not available yet.

    Also check out these projects that help you to get started:

    A GitHub starter project with necessary packages and references

    A Docker image that contains the GitHub starter project running on Ubuntu!

    The web is about choices...

    Currently, we also offer another set of controls for the ASP.NET Core framework, the DevExtreme ASP.NET MVC Controls.

    The main goal of the DevExpress ASP.NET Bootstrap Controls for ASP.NET Core is full compatibility with Bootstrap themes. If you plan to create a Bootstrap application then use the Bootstrap Controls whether for ASP.NET WebForms or ASP.NET Core.

    The DevExtreme ASP.NET MVC Controls support ASP.NET MVC (3+) and ASP.NET Core (1.x and 2.0). Keep in mind that they're based on client-side JavaScript controls. If you are a JavaScript dev then you may prefer the 'DevExtreme ASP.NET MVC Controls'. If you are a .NET dev then you may prefer 'the DevExpress ASP.NET Bootstrap Controls for ASP.NET Core'.

    What about ASP.NET MVC?

    At this time, our new Bootstrap controls for ASP.NET Core 2.0 will not support previous versions of the ASP.NET MVC framework. That is not to say that they will never support those frameworks. We will keep an eye on your feedback and decide in the future.

    Bootstrap 4 Beta

    The Bootstrap team just announced the 'Bootstrap 4 beta' release.

    Good news, we are supporting Bootstrap 4 for our new Bootstrap controls for ASP.NET Core 2.0 out of the box.

    Join the webinar

    On Tuesday, October 24th, 2017 at 10am, I'll show you how to get started with the new DevExpress ASP.NET Bootstrap Controls for ASP.NET Core 2.0. You'll learn about the NuGet package(s), boilerplate project, changing Bootstrap themes, and features of the controls. We'll also cover ASP.NET Core features such as Model Binding, Data Annotations, and Unobtrusive Validation.

    Sign up for the live webinar here: New Bootstrap Controls for ASP.NET Core 2.0

    What do you think of the CTP release of the DevExpress Bootstrap Controls for ASP.NET Core 2.0? Drop me a line below.

    Thanks!


    Your Next Great .NET App Starts Here

    Year after year, .NET developers such as yourself consistently vote DevExpress products #1.

    Experience the DevExpress difference for yourself and download a free 30-day trial of all our products today: DevExpress.com/trial (free support is included during your evaluation).

  • Use DevExtreme ASP.NET MVC Controls easily in ASP.NET Core 2.0

    In August 2017 Microsoft released the ASP.NET Core 2.0 framework. This major update packs a lot of new features as their announcement blog post makes clear:

    This release features compatibility with .NET Core 2.0, tooling support in Visual Studio 2017 version 15.3, and the new Razor Pages user-interface design paradigm. For a full list of updates... -Microsoft Announcement blog post

    We've been working hard to provide compatibility with this new release and I'm happy to announce that our DevExtreme ASP.NET MVC controls now support ASP.NET Core 2.0.

    To get ASP.NET Core 2.0 in Visual Studio 2017 15.3.x, please check this link: https://www.microsoft.com/net/core

    To learn more details about ASP.NET Core 2.0, please see this detailed blog post: https://blogs.msdn.microsoft.com/webdev/2017/08/14/announcing-asp-net-core-2-0/

    Get started

    To get started with ASP.NET Core 2.0 and DevExtreme MVC Controls in just a few minutes, create an ASP.NET Core 2.0 project using VS2017 and then add DevExtreme MVC Controls resources to it using this guide (see "ASP.NET Core MVC" section):

    DevExtreme ASP.NET MVC Controls: Download and Installation

    In this screenshot of the Solution Explorer, you see the necessary DevExtreme packages and files that you'll need for ASP.NET Core 2.0:

    Upgrade Existing Projects

    To upgrade your existing ASP.NET Core 1.x application that is based on *.csproj and includes DevExtreme MVC Controls, you'll need to make the following changes:

    1. Change the "TargetFramework" in your *.csproj file:
    <PropertyGroup>
      <TargetFramework>netcoreapp2.0</TargetFramework>
    </PropertyGroup>
    1. Replace "Microsoft.AspNetCore.*" packages with the new "Microsoft.AspNetCore.All" meta package:
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0" />

    Your csproj file should look something like this:

    Then run your upgraded project and the DevExtreme ASP.NET MVC Controls will work in ASP.NET Core 2.0:

    Razor Pages

    As part of ASP.NET Core 2.0, Microsoft also introduced 'Razor Pages', which makes page-focused scenarios easier and more productive:

    Razor Pages allow you to code without the need for a controller, for example:

    We tested the DevExtreme ASP.NET MVC Controls with the new Razor Pages feature and it works brilliantly. Here's the DevExtreme ASP.NET MVC DataGrid that's bound to a WebAPI web service in a Razor Page:

    Are you using DevExtreme MVC Controls with ASP.NET Core 2.0? I'd love to hear about it, drop me a line below. Thanks!

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • DevExtreme MVC Client-Side Validation: [Required] Attribute Changes (17.1.6)

    We received some feedback from our customers about an issue with how the DevExtreme MVC CheckBox Control handles client-side validation.

    The main issue they found was that when using the MVC CheckBox control on a form that needed to be submitted, the user had to check the box before they could submit the form even if the field is not marked as 'Required' on your data model.

    This was an odd issue because when we looked at the server-side model, we didn't find any attribute that would've require the "true" value only. So then why does our CheckBox control enforces the 'required' check?

    DevExtreme Client-Side Validation

    A Few Words About DevExtreme Validation

    DevExtreme ASP.NET MVC Controls are, basically, client-side JavaScript DevExtreme widgets wrapped in native ASP.NET MVC server-side controls. Client-side editors have a set of validation rules that are mapped to attributes of the server-side model. This way, the editors can generate validation rules based on the attributes automatically.

    The Root of the Problem

    After some debugging and research, we discovered that the 'Required' attribute is implicitly attached to non-nullable properties, such as the Boolean property in our case. This was confirmed in a note to the AddImplicitRequiredAttributeForValueTypes property in ASP.NET MVC documentation.

    So what happens if we use the native MVC check box control, will it still display the same issue? Turns out, no, it does not because the native check box control ignores the 'required' check.

    Then we compared the results of validating a value against the 'required' rule in DevExtreme with that in jQuery Unobtrusive used in ASP.NET MVC projects by default. Here's what we found:

    Value jQuery Unobtrusive DevExtreme Match
    null invalid invalid
    number valid valid
    empty string invalid invalid
    non-empty string valid valid
    DateTime valid valid
    true valid valid
    false valid invalid

    The crucial difference turned out to be in how the "false" value is handled. jQuery Unobtrusive validation accepts both "true" and "false" values of a Boolean property. DevExtreme validation, which adopts the HTML5 behavior, considers "false" an invalid value, and as a result, doesn't let the user submit the form unless the CheckBox is checked.

    Now that the mystery is uncovered, we found two possible ways to work around this issue:

    1. set to "false" the AddImplicitRequiredAttributeForValueTypes property
    2. use a nullable bool type instead of bool type in your application

    Unfortunately, both of these would not work for all users.

    Solution

    To provide a good solution that will work for all customers, we're introducing a new global flag called Compatibility.Validation.IgnoreRequiredForBoolean in the v17.1.6 release.

    When set to true, the DevExtreme validation engine will ignore the Required validation rule for bool type, which is the proper mode for MVC apps. When set to false, it keeps the previous DevExtreme or HTML5 like behavior. The default setting will be set to false in versions 17.1.x.

    We've updated our project templates and you'll find this new flag in:

    • "Global.asax" file for classic MVC on VB or CS
    protected void Application_Start()
    {
      DevExtreme.AspNet.Mvc.Compatibility.Validation.IgnoreRequiredForBoolean = false;
      // ... the rest of your code ...
    }
    Protected Sub Application_Start()
    {
      DevExtreme.AspNet.Mvc.Compatibility.Validation.IgnoreRequiredForBoolean = False
      ' ... the rest of your code ...
    }
    • "Startup.cs" file for ASP.NET Core MVC
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
      DevExtreme.AspNet.Mvc.Compatibility.Validation.IgnoreRequiredForBoolean = false;
      // ... the rest of your code ...
    

    How to use Required for bool type when IgnoreRequiredForBoolean is enabled?

    You can decorate your model properties with the [DevExtremeRequired] attribute. This attribute supports the HTML5 behavior for bool type on a client and on the server side. For all other value types, it's behavior is similar to using the 'Required' attribute.

    Beware: will change in v.17.2

    The global flag is "false" by default in v17.1, however, it'll change to "true" in v17.2.

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • DevExtreme on GitHub: Pre-Releases, Sprints, & Upcoming Demos

    Back in March 2017, we began to publicly host our DevExtreme source code on GitHub. One of the benefits of GitHub source hosting is that we can provide developers with 'pre-release' builds easily.

    Pre-Release

    I'm happy to announce that DevExtreme pre-release builds are now available. A pre-release build allows you to experience some of the new controls and features that will be part of future releases. In fact, a pre-release is now available that has DevExtreme v17.2 features. The DevExtreme v17.2 final release is will be available later this year.

    The pre-releases are available for download on the DevExtreme GitHub releases page:

    https://github.com/DevExpress/DevExtreme/releases

    What's in the pre-release?

    The current pre-release is labeled '17.2 Sprint 6' and includes improvements for DataGrid, Scheduler, and Editor controls. You can read the release notes here:

    https://github.com/DevExpress/DevExtreme/releases/tag/17.2.0-sprint.6

    However, this is not the first v17.2 pre-release build. We published the '17.2 Sprint 5' a few weeks ago and it includes our new (upcoming) data visualization widget: dxFunnel.

    Now, as software developers, you'll know that not every build will have something interesting. That said, I recommend that you 'watch' our repo so that you do not miss any pre-release news.

    Sprints

    Our DevExtreme dev team uses Agile and works in sprints that last two weeks. Therefore, you can expect a pre-release about every two weeks.

    NPM & Bower packages too

    You can download pre-release packages from NPM:

    npm i devextreme@17.2.1-pre-17248

    and Bower too:

    bower install devextreme#17.2.1-pre-17248

    Watch the repo

    Click the "watch" button on the DevExtreme GitHub repo and you will get notifications when we release a new preview build.

    Warning

    Please be aware of the following regarding 'pre-release' software:

    Products marked as pre-release (Beta, Community Technology Preview "CTP", or Release Candidate "RC") may contain deficiencies and as such, should not be considered for use or integrated within any mission critical software application. DevExpress may discontinue availability of its pre-release software, limit or modify software functionality, or eliminate support services at any time.

    Our intention with pre-release software is for the early-adopters who want to preview, test, and provide feedback to help us improve upcoming features, controls, etc.

    I recommend reading our 'pre-release' software web page.

    Preview Demos

    We're also working on publishing our demos on GitHub too. This will be available as a new devextreme demos repo soon and allow you to test pre-release features demos.

    What do you think about the DevExtreme pre-releases on GitHub? Drop me a line below.

    Email: mharry@devexpress.com

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • DevExtreme ASP.NET MVC Controls: DataSource URL Improvements (17.1.5)

    Since releasing the DevExtreme ASP.NET MVC Controls in May 2017, we've received some great feedback on bugs, improvements, feature requests, etc.

    And thanks to your feedback, we're improving "DataSource URL generation" in the DevExtreme v17.1.5 release. First, let's look at the feature and the problem we aim to solve:

    DataSource URLs

    The DevExtreme ASP.NET MVC Controls are client-side JavaScript DevExtreme controls that are wrapped in native ASP.NET MVC Server controls. Therefore, they handle things like data-binding and events differently than typical ASP.NET MVC Server controls.

    Data-binding is different for client-side controls because you need a web service to deliver that data to the client-side control. With the DevExtreme ASP.NET MVC Controls, we've made that aspect easier for you by providing 'DataSources'. So whether you're using a static collection, ASP.NET Web API, OData, OLAP Cube, or read-only JSON then our DataSource objects help you to data bind them to a DevExtreme ASP.NET MVC Control. I recommend reading the excellent data-binding help topic to learn more.

    Problem

    Now let's dive into the specific issue and solution with DataSource URLs. The two most common ways to specify data sources for our MVC controls are connecting them to an MVC or a Web API controller:

    // MVC
    @(Html.DevExtreme().DataGrid()
      .DataSource(d => d.Mvc().Controller("Data").LoadAction("Get"))
    

    or

    // WebAPI
    @(Html.DevExtreme().DataGrid()
      .DataSource(d => d.WebApi().Controller("Data").LoadAction("Get"))
    

    From the earliest release candidate builds, we've used certain defaults when configuring data access in this manner. Specifically:

    1. We automatically assign the route name depending on the platform and the controller type:
    ASP.NET MVC 5 ASP.NET Core
    .Mvc() "Default" "default"
    .WebApi() "DefaultApi" -
    1. For .WebApi(), we automatically configure all CRUD actions ("Get", "Post", "Put", "Delete")

    While those default settings work well, we've discovered the following issues with them:

    1. Attribute routing does not work out of the box (except for .WebApi() in .NET Core because we do not assign a route name). Developers need to manually specify .RouteName(null) or .RouteName("MyRoute") to make them work.

    2. Full CRUD actions for .WebApi() are not always needed because in many cases, you may just need to display some data. To disable the generation of redundant URLs, developers have to assign .UpdateAction(null), .InsertAction(null), etc.

    3. For most WebAPI route patterns (including the one declared in the WebAPI project template), our predefined action names appear in the query string producing ugly URLs like /api/Orders?action=Get.

    Solution

    To solve the above mentioned issues, we're introducing a new global flag named UseLegacyRouting and its default value is set to true. This new flag will be part of the DevExtreme v17.1.5 release.

    The new UseLegacyRouting flag is fully backwards compatible too.

    If you set it to false, then no default route names and no default actions will be used thereby avoiding any unexpected effects we mentioned above.

    For ASP.NET MVC 5 applications, enable it in Global.asax.cs:

    protected void Application_Start()
    {
      DevExtreme.AspNet.Mvc.Compatibility.DataSource.UseLegacyRouting = false;
      // ... the rest of your code ...
    }

    For .NET Core apps, add the line to Startup.cs:

    public void Configure(IApplicationBuilder app, 
                          IHostingEnvironment env, 
                          ILoggerFactory loggerFactory) 
    {
      DevExtreme.AspNet.Mvc.Compatibility.DataSource.UseLegacyRouting = false;
      // ... the rest of your code ...
    }

    What to expect when the flag is set to false

    Besides the improvements (working attribute routing and cleaner URLs), you may face the following changes in behavior:

    1. If you have custom routing rules declared before the default one, or using attribute routes with {controller} and {action} placeholders, then they may take precedence and change resulting URLs. You might need to specify .RouteName(...) explicitly to restore the previous behavior.

    2. For .WebApi(), insert, update, and delete action URLs won't be generated by default. You need to specify them explicitly. For example, to enable update URL, add .UpdateAction("Put") for routes based on action names or .UpdateAction(true) for routes based on HTTP verbs.

    Recommendations - true or false?

    I recommend that for existing projects you set the UseLegacyRouting flag to true. For new projects, or those that you'd like to upgrade to the new approach, set the flag to false. This will help you transition to future versions of the DevExtreme ASP.NET MVC controls.

    We're considering changing the default value of UseLegacyRouting to false in the next major release (17.2) and we'd like your feedback.

    What do you think about the DevExtreme ASP.NET MVC Controls? Drop me a line below.

    Email: mharry@devexpress.com

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • Easy Theme Customization for DevExpress ASP.NET Controls

    Back in 2014, I announced a new set of themes for our DevExpress ASP.NET and MVC controls. It goes without saying that these themes looked great, but, perhaps even better, they allowed you to easily customize the theme's base font and color. This was a huge improvement over our traditional 'classic' themes because you could now quickly create a version of one of the new themes to suit your business needs and design.

    The bad news was that, in order to take advantage of this feature, you had to use our 'Theme Builder' tool.

    Settings - Web.Config, API, etc.

    So now for some good news! You can now simply set that base font and color for DevExpress ASP.NET and MVC controls directly from the web.config file or by using our API! The following examples work with DevExpress ASP.NET v16.2 and above.

    Web.config

    In your web.config, specify the 'baseColor' and 'font' settings in the themes of DevExpress section:

    <configuration>
      ...
      <devExpress>
        ...
        <themes enableThemeAssembly="true"
                     styleSheetTheme=""
                     theme="Metropolis"
                     customThemeAssemblies=""
                     baseColor="Green"
                     font="30px Calibri" />
        ...
      </devExpress>
      ...
    </configuration>

    Programmatic API

    You can also set the base font and color using API calls:

    protected void Application_PreRequestHandlerExecute(object sender, EventArgs e) {
        ...
        DevExpress.Web.ASPxWebControl.GlobalThemeBaseColor = "Green";
        DevExpress.Web.ASPxWebControl.GlobalThemeFont = "30px 'Calibri'";
    }

    Or in ASP.NET MVC you use the following approach:

    protected void Application_PreRequestHandlerExecute(object sender, EventArgs e) {
        ...
        DevExpress.Web.MVC.DevExpressHelper.GlobalThemeBaseColor = "#00FF00";
        DevExpress.Web.MVC.DevExpressHelper.GlobalThemeFont = "30px 'Calibri'";
    }

    The value formats for the color work with RGB, Hexadecimal, and Color names too. Learn more here.

    Limitations

    Only the following themes support the changing both the base color and font: Mulberry, Moderno, Metropolis, Metropolis Blue, iOS, Material, and Material Compact.

    These classic themes allow you to set the base font only: Aqua, Black Glass, Glass, Office2003Blue, Office2003Olive, Office2003Silver, PlasticBlue, RedWine, SoftOrange, and Youthful.

    Documentation

    Check out this excellent help documentation topic that gives even more detail:

    Theming > Changing Theme Base Color and Font Settings

    Demos

    Try out the latest DevExpress ASP.NET demos online and experience the theme parameters change dynamically. You can use the theme options on the top right:

    Then, drop me a line below on what you think about the easy way to customize a DevExpress ASP.NET theme. Thanks!


    Your Next Great .NET App Starts Here

    Year after year, .NET developers such as yourself consistently vote DevExpress products #1.

    Experience the DevExpress difference for yourself and download a free 30-day trial of all our products today: DevExpress.com/trial (free support is included during your evaluation).

  • DevExtreme React Now Available on GitHub

    DevExtreme React Grid

    In May 2017, we announced our CTP of the DevExtreme React Grid. And since then, we've released the DevExtreme React Grid on GitHub in the DevExtreme Reactive repo:

    Your feedback helps us improve these controls. So please click the 'Star' and 'Watch' links on this repo and let us know your thoughts. You'll also get updates about other future DevExtreme React controls too. So by 'watching' the repo you'd get the latest updates like this: we're about to release new Material UI templates and demos:

    DevExtreme React Grid - Material UI

    Distribution

    The DevExtreme React Controls are only available on the NPM distribution and the development will be on this GitHub repo. They will not be included in the DevExtreme installation that you find at https://js.devexpress.com. The React framework and other supporting libraries are on GitHub and we intend to be in the same ecosystem. In fact, we've also moved DevExtreme to GitHub but DevExtreme will still have an installation available at https://js.devexpress.com.

    Webinar Recap

    Check out the recent 'New in v17.1: DevExtreme' webinar to learn about the DevExtreme React Grid:

    More controls!

    The DevExtreme React Grid was only the first of other controls that we have planned. What's next? Stay tuned to find out.

    Please try the excellent DevExtreme React Grid and then let us know what you think of it.

    Email: mharry@devexpress.com

    Twitter: @mehulharry


    Create highly responsive web apps for touch-enabled devices and traditional desktops.

    From desktops to mobile devices, DevExtreme HTML5 Data Grid delivers the flexibility you’ll need to build apps that reach the widest audience and deliver touch-first user experiences to power your next great interactive website.

    Download a free and fully-functional version of DevExtreme now: Download DevExtreme

  • ASP.NET AJAX Control Toolkit - v17.1.1 - Security Improved and Issues Fixed

    As part of our continuous effort to find and patch security issues, we recently discovered a few vulnerabilities in the ASP.NET AJAX Control Toolkit library.

    We have fixed and patched these vulnerabilities along with a few public issues in the v17.1.1 release that is now available.

    I recommend that you upgrade to the latest ASP.NET AJAX Control Toolkit release as soon as possible.

    Security Vulnerabilities

    We discovered and fixed the following three major vulnerabilities:

    • Uploading a file with an arbitrary extension
    • A DoS attack on the server where AjaxFileUpload control is located
    • It is possible to obtain info about files outside the temporary upload folder

    To protect those websites that may not have upgraded to the latest release, we have not published the details of these vulnerabilities on GitHub.

    Bug fixes

    We've also patched three issues that were reported to us on GitHub:

    AjaxFileUpload Issue

    • Item 327 - AjaxFileUpload events have an invalid sender

    HtmlEditorExtender Issues

    • Item 320 - HtmlEditorExtender generates an extra "br" tag
    • Item 324 - HtmlEditor does not show toolbar images when EnablePartialRendering=true

    Update to v17.1.1 (or higher)

    Please upgrade your ASP.NET AJAX Control Toolkit version to the latest version. You can download our useful installer here:

    Or use the Nuget libraries:

    ASP.NET AJAX Control Toolkit Nuget packages

    Then give us your feedback on GitHub.

    Try DevExpress ASP.NET

    We’d like to thank you for installing the DevExpress Edition of the AJAX Control Toolkit and look forward to your feedback as you begin using it.

    When we took over the fabulous ASP.NET AJAX Control Toolkit, our goal was to reach those web developers who want to use great web user interface controls for their web projects and DevExpress ASP.NET provides that and much more.

    Try the free DevExpress 30 day trial.

    Email: mharry@devexpress.com

    Twitter: @mehulharry


    Your Next Great .NET App Starts Here

    Year after year, .NET developers such as yourself consistently vote DevExpress products #1.

    Experience the DevExpress difference for yourself and download a free 30-day trial of all our products today: DevExpress.com/trial (free support is included during your evaluation).

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