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.
<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.
<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;
}
}
}Properties
| Name | Type | Description | Notes | Default Value | |
|---|---|---|---|---|---|
 |
Attributes | Dictionary<String,Object> |
attribute
static value
|
null | |
|
ClientIDMode | ClientIDMode | Gets or sets the client ID generation algorithm. |
attribute
static value
|
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. |
attribute
static value
bindable
|
null |
|
ExpandedPanelIndex | Int32 | Gets or sets the index of the CollapsiblePanel which is currently expanded. |
attribute
bindable
|
-1 |
|
ID | String | Gets or sets the unique control ID. |
attribute
static value
|
null |
|
InnerText | String | Gets or sets the inner text of the HTML element. |
attribute
static value
bindable
|
null |
|
Visible | Boolean | Gets or sets whether the control is visible. |
attribute
bindable
|
True |