Accordion

in namespace DotVVM.Framework.Controls.Bootstrap

Wraps a group of CollapsiblePanel controls to create an accordion-like behavior.

Usage & Scenarios

Wraps a group of CollapsiblePanel controls to create an accordion-like behavior. When you expand one of the panels inside, the others will collapse. Only one panel can be expanded at the same time.

https://getbootstrap.com/docs/3.3/javascript/#collapse-example-accordion

Sample 1: Accordion Control

To use this control, just place several CollapsiblePanels inside the Accordion control.

In the most common scenario, you need the first panel to be expanded while the others are collapsed.

page.dothtml

<bs:Accordion>
  
  <bs:CollapsiblePanel Type="Warning" IsCollapsed="false">
    <HeaderTemplate>
      Collapsible Panel Number 1
    </HeaderTemplate>
    <ContentTemplate>
      This is panel body.
    </ContentTemplate>
    <FooterTemplate>
      Footer.
    </FooterTemplate>
  </bs:CollapsiblePanel>

  <bs:CollapsiblePanel Type="Danger">
    <HeaderTemplate>
      Collapsible Panel Number 2
    </HeaderTemplate>
    <ContentTemplate>
      This is panel body.
    </ContentTemplate>
  </bs:CollapsiblePanel>

  <bs:CollapsiblePanel Type="Warning">
    <HeaderTemplate>
      Collapsible Panel Number 3
    </HeaderTemplate>
    <ContentTemplate>
      This is panel body.
    </ContentTemplate>
  </bs:CollapsiblePanel>
  
</bs:Accordion>

Sample 2: Data-binding the CollapsiblePanels

You can data-bind the panels using the Repeater control and use the ExpandedPanelIndex property to determine which panel is currently expanded.
When none of the panels is expanded, the value of this property will be -1.

Because we don't want the Repeater to place the panels inside one <div> element, we are using the RenderWrapperTag property to modify the default behavior.

page.dothtml
ViewModel.cs

<bs:Accordion ExpandedPanelIndex="{value: Index}">

  <dot:Repeater DataSource="{value: Panels}" RenderWrapperTag="true">
    <ItemTemplate>
      
      <bs:CollapsiblePanel>
        <HeaderTemplate>
          <dot:Literal Text="{value: Header}" />
        </HeaderTemplate>
        <ContentTemplate>
          <dot:Literal Text="{value: Text}" />
        </ContentTemplate>
      </bs:CollapsiblePanel>
    
    </ItemTemplate>
  </dot:Repeater>

</bs:Accordion>

<p>Expanded panel index: {{value: Index}}</p>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace DotvvmWeb.Views.Docs.Controls.bootstrap.Accordion.sample2
{
    public class ViewModel
    {
        public int Index { get; set; } = 1;

        public PanelData[] Panels { get; set; } =
        {
            new PanelData("Footer 1", "Header 1", "Text 1"),
            new PanelData("Footer 2", "Header 2", "Text 2"),
            new PanelData("Footer 3", "Header 3", "Text 3")
        };
    }

    public class PanelData
    {
        public string Text { get; set; }
        public string Header { get; set; }
        public string Footer { get; set; }

        public PanelData()
        {
        }

        public PanelData(string footer, string header, string text)
        {
            Footer = footer;
            Header = header;
            Text = text;
        }
    }
}

Show all inherited properties

Properties

Name	Type	Description	Notes	Default Value
ClientIDMode	ClientIDMode	Gets or sets the client ID generation algorithm.	attribute inner element static value bindable default	Static
DataContext	Object	Gets or sets a data context for the control and its children. All value and command bindings are evaluated in context of this value. The DataContext is null in client-side templates.	attribute inner element static value bindable default	null
ExpandedPanelIndex	Int32	Gets or sets the index of the CollapsiblePanel which is currently expanded.	attribute inner element static value bindable default	-1
ID	String	Gets or sets the control client ID within its naming container.	attribute inner element static value bindable default	null
IncludeInPage	Boolean	Gets or sets whether the control is included in the DOM of the page.	attribute inner element static value bindable default	True
InnerText	String	Gets or sets the inner text of the HTML element. Note that this property can only be used on HtmlGenericControl directly and when the control does not have any children.	attribute inner element static value bindable default	null
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

Edit on Github

Accordion

Usage & Scenarios

Sample 1: Accordion Control

Sample 2: Data-binding the CollapsiblePanels

Properties

HTML produced by the control

On this page

Accordion

Usage & Scenarios

Sample 1: Accordion Control

Sample 2: Data-binding the CollapsiblePanels

Properties

HTML produced by the control

On this page

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