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Carousel

in namespace DotVVM.Bootstrap5.Controls

Renders a Bootstrap carousel widget.

Usage & Scenarios

Renders a Bootstrap carousel widget.

https://getbootstrap.com/docs/5.2/components/carousel/

Sample 1: Basic Carousel

Carousel images have to be placed inside the Items or DataSource property. Items is a control default property so you can place the <bs:CarouselItem> elements directly inside the <bs:Carousel> control. Each image is defined using the CarouselItem control.

<div style="height: 428px; width: 640px;">

    <bs:Carousel>
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/LA.jpg" />
        </bs:CarouselItem>
    
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/NY.jpg" />
        </bs:CarouselItem>
    
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/Miami.jpg" />
        </bs:CarouselItem>
    </bs:Carousel>

</div>

Sample 2: Carousel Settings

The Carousel control has the following properties:

  • The Animation property specifies which transitions between slides should be used - Fade or Slide.

  • The AutoSlideInterval property sets the interval of automatic transitions in seconds. If this property is not set, the user has to switch the slides manually.

  • The AutoPlay property specifies when do the automatic transitions happen - OnLoad, Disabled or OnFirstInteraction.

  • The RenderSideControls property specifies whether the left and right controls which switch the slides will be rendered.

  • The RenderIndicators property specifies whether the bottom active slide indicators should be rendered.

  • The PauseOnHover property indicates whether the animation should be paused when the mouse cursor is over the carousel.

  • The CycleItems property specifies whether the animation should continue when it reaches the last slide.

  • The ActiveItemIndex property specifies which image will be displayed first.

  • The DisableTouchSwipping property specifies whether Carousel slides on touchscreen devices can be transitioned by swipping left/right.

  • The IsDark property specifies whether DarkMode is used.

<div style="height: 428px; width: 640px;">

    <bs:Carousel RenderSideControls="false" RenderIndicators="true" 
                 Animation="Fade" AutoSlideInterval="3" 
                 PauseOnHover="false" CycleItems="false"
                 ActiveItemIndex="0" AutoPlay="OnFirstInteraction">
                 
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/LA.jpg" />
        </bs:CarouselItem>
        
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/NY.jpg" />
        </bs:CarouselItem>
        
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/Miami.jpg" />
        </bs:CarouselItem>
    </bs:Carousel>

</div>

Sample 3: Side Controls

With RightControlTemplate and LeftControlTemplate you can specify your own buttons which will be used instead of the default ones.

<div style="height: 428px; width: 640px;">

    <bs:Carousel>
        <Items>
        
            <bs:CarouselItem IsActive="true">
                <bs:Image ImageUrl="~/Images/LA.jpg" />
            </bs:CarouselItem>
        
            <bs:CarouselItem>
                <bs:Image ImageUrl="~/Images/NY.jpg" />
            </bs:CarouselItem>
        
            <bs:CarouselItem>
                <bs:Image ImageUrl="~/Images/Miami.jpg" />
            </bs:CarouselItem>
        
        </Items>

        <RightControlTemplate>
            <span aria-hidden="true" style="color: white">&gt; Next</span>
        </RightControlTemplate>

        <LeftControlTemplate>
            <span aria-hidden="true" style="color: white">&lt; Previous</span>
        </LeftControlTemplate>

    </bs:Carousel>

</div>

Sample 4: CarouselItem

The CarouselItem control has the following properties:

  • The Caption or the CaptionTemplate properties can be used to set description of the image.

  • The ImageAlternateText property specifies an alternate text for an area, if the image cannot be displayed.

  • The ImageUrl to specifies which property of the collection item will be used as the URL of the image.

  • The Delay property which specifies the amount of time to delay between automatically cycling to the next item.

<div style="height: 428px; width: 640px;">

    <bs:Carousel>
        <bs:CarouselItem Caption="Los Angeles" ImageAlternateText="Los Angeles">
            <bs:Image ImageUrl="~/Images/LA.jpg" />
        </bs:CarouselItem>
        
        <bs:CarouselItem Delay="2000">
            <bs:Image ImageUrl="~/Images/NY.jpg"/>
            <CaptionTemplate>
                <h1>New York</h1>
            </CaptionTemplate>
        </bs:CarouselItem>
        
        <bs:CarouselItem>
            <bs:Image ImageUrl="~/Images/Miami.jpg" />
        </bs:CarouselItem>
    </bs:Carousel>

</div>
public class ViewModel : DotvvmViewModelBase
{
    public ImageData[] Images { get; set; } = new[]
    {
        new ImageData("~/Images/LA.jpg", "Los Angeles"),
        new ImageData("~/Images/NY.jpg", "New York", true),
        new ImageData("~/Images/Miami.jpg", "Miami")
    };
}

public class ImageData
{
    public ImageData()
    {
    }

    public ImageData(string url, string caption, bool active = false)
    {
        IsActive = active;
        Url = url;
        Caption = caption;
    }

    public string Caption { get; set; }
    public bool IsActive { get; set; }
    public string Url { get; set; }
}

Sample 5: Carousel DataSource

The Carousel slides can also be loaded from a collection in the viewmodel. Use the DataSource property to specify the source collection.

Then use the ItemImageUrl to specify which property of the collection item will be used as the URL of the image.

Similarly, the ItemCaption specifies which property will be the slide caption. Alternatively, you can use ItemCaptionTemplate property to define a custom template for slide captions.

The ItemImageAlternateText to specify which property of the collection item will be used as ImageAlternateTex.

Finally, the ItemDelay to specify the property which will be used as the delay of the Image.

<div style="height: 428px; width: 640px;">
    <bs:Carousel DataSource="{value: Images}"
                 ItemImageUrl="{value: Url}" 
                 ItemCaption="{value: Caption}"
                 ItemIsActive="{value: IsActive}"
                 ItemDelay="1000" />
</div>
using DotVVM.Framework.ViewModel;

namespace Dotvvm.Samples.Carousel.sample5
{
    public class ViewModel : DotvvmViewModelBase
    {
        public ImageData[] Images { get; set; } = new[]
        {
            new ImageData("/Images/LA.jpg", "Los Angeles"),
            new ImageData("/Images/NY.jpg", "New York", true),
            new ImageData("/Images/Miami.jpg", "Miami")
        };
    }

    public class ImageData
    {
        public ImageData()
        {
        }

        public ImageData(string url, string caption, bool active = false)
        {
            IsActive = active;
            Url = url;
            Caption = caption;
        }

        public string Caption { get; set; }
        public bool IsActive { get; set; }
        public string Url { get; set; }
    }

}

Properties

Name Type Description Notes Default Value
property icon ActiveItemIndex Int32 Gets or sets the index of the active slide.
attribute
inner element
static value
bindable
default
 0
property icon Animation CarouselAnimationType Gets or sets which animation will be used.
attribute
inner element
static value
bindable
default
 Slide
property icon Autoplay CarouselAutoplay Gets or sets the autoplay settings. Autoplay could be enabled after load, enabled after first interaction or disabled completely.
attribute
inner element
static value
bindable
default
 OnLoad
property icon AutoSlideInterval Int32? Gets or sets the interval (in miliseconds) between changing slides.
attribute
inner element
static value
bindable
default
 null
property icon CycleItems Boolean Gets or sets whether the carousel should cycle through images continuously or stop after the slideshow is finished.
attribute
inner element
static value
bindable
default
 True
property icon DataSource IValueBinding<IEnumerable<Object>> Gets or sets a data-source object from which the child controls will be generated.
attribute
inner element
static value
bindable
default
 null
property icon DisableTouchSwiping Boolean Gets or sets whether swiping by touch is enabled.
attribute
inner element
static value
bindable
default
 False
property icon ItemCaption String Gets or sets the caption plain text for carousel item when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemCaptionTemplate ITemplate Gets or sets the caption template for carousel item when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemContent List<DotvvmControl> Gets or sets the carousel item content when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemDelay Int32? Gets or sets the time delay (in seconds) for carousel item when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemImageAlternateText String Gets or sets the image alternate text for carousel item when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemImageUrl String Gets or sets the image URL for carousel item when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon ItemIsActive Boolean Gets or sets whether the carousel item is active when DataSource is set.
attribute
inner element
static value
bindable
default
 null
property icon Items List<ICarouselItem> Gets or sets the items inside the control.
attribute
inner element
static value
bindable
default
 null
property icon LeftControlTemplate ITemplate Gets or sets the template for the "move left" control.
attribute
inner element
static value
bindable
default
 null
property icon PauseOnHover Boolean Gets or sets whether changing of items shall be paused on hover.
attribute
inner element
static value
bindable
default
 True
property icon RenderIndicators Boolean Gets or sets whether the dots indicating the active slide will be rendered.
attribute
inner element
static value
bindable
default
 True
property icon RenderSideControls Boolean Gets or sets whether navigation controls will be rendered.
attribute
inner element
static value
bindable
default
 True
property icon RightControlTemplate ITemplate Gets or sets the template for the "move right" control.
attribute
inner element
static value
bindable
default
 null
property icon Theme CarouselTheme Gets or sets the carousel theme.
attribute
inner element
static value
bindable
default
 Light
property icon Visible Boolean Gets or sets whether the control is visible. When set to false, `style="display: none"` will be added to this control.
attribute
inner element
static value
bindable
default
 True

HTML produced by the control

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