Schema Explorer

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Important note about accessibility: In version 1.3 of the schema we introduced a label property on Inputs to improve accessibility. If the Host app you are targeting supports v1.3 you should use label instead of a TextBlock as seen in some samples below. Once most Host apps have updated to the latest version we will update the samples accordingly.

TextBlock

Displays text, allowing control over font sizes, weight, and color.

Property Type Required Description Version
type "TextBlock" Yes Must be "TextBlock". 1.0
text string Yes Text to display. A subset of markdown is supported (https://aka.ms/ACTextFeatures) 1.0
color Colors? No Controls the color of TextBlock elements. 1.0
fontType FontType? No Type of font to use for rendering 1.2
horizontalAlignment HorizontalAlignment? No Controls the horizontal text alignment. When not specified, the value of horizontalAlignment is inherited from the parent container. If no parent container has horizontalAlignment set, it defaults to Left. 1.0
isSubtle boolean? No If true, displays text slightly toned down to appear less prominent. 1.0
maxLines number No Specifies the maximum number of lines to display. 1.0
size FontSize? No Controls size of text. 1.0
weight FontWeight? No Controls the weight of TextBlock elements. 1.0
wrap boolean No If true, allow text to wrap. Otherwise, text is clipped. 1.0
style TextBlockStyle? No, default: "default" The style of this TextBlock for accessibility purposes. 1.5

Inherited properties

Property Type Required Description Version
fallback Element, FallbackOption No Describes what to do when an unknown element is encountered or the requires of this or any children canā€™t be met. 1.2
height BlockElementHeight No Specifies the height of the element. 1.1
separator boolean No When true, draw a separating line at the top of the element. 1.0
spacing Spacing No Controls the amount of spacing between this element and the preceding element. 1.0
id string No A unique identifier associated with the item. 1.0
isVisible boolean No, default: true If false, this item will be removed from the visual tree. 1.2
requires Dictionary<string> No A series of key/value pairs indicating features that the item requires with corresponding minimum version. When a feature is missing or of insufficient version, fallback is triggered. 1.2

Example

JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "This is some text",
			"size": "large"
		},
		{
			"type": "TextBlock",
			"text": "It doesn't wrap by default",
			"weight": "bolder"
		},
		{
			"type": "TextBlock",
			"text": "So set **wrap** to true if you plan on showing a paragraph of text",
			"wrap": true
		},
		{
			"type": "TextBlock",
			"text": "You can also use **maxLines** to prevent it from getting out of hand",
			"wrap": true,
			"maxLines": 2
		},
		{
			"type": "TextBlock",
			"text": "You can even draw attention to certain text with color",
			"wrap": true,
			"color": "attention"
		}
	]
}
Adaptive Card

Properties

text

Text to display. A subset of markdown is supported (https://aka.ms/ACTextFeatures)

  • Type: string
  • Required: Yes

color

Controls the color of TextBlock elements.

  • Type: Colors?
  • Required: No
  • Allowed values:
    • "default"
    • "dark"
    • "light"
    • "accent"
    • "good"
    • "warning"
    • "attention"
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "color: default",
			"color": "default"
		},
		{
			"type": "TextBlock",
			"text": "color: accent",
			"color": "accent"
		},
		{
			"type": "TextBlock",
			"text": "color: good",
			"color": "good"
		},
		{
			"type": "TextBlock",
			"text": "color: warning",
			"color": "warning"
		},
		{
			"type": "TextBlock",
			"text": "color: attention",
			"color": "attention"
		},
		{
			"type": "TextBlock",
			"text": "color: light",
			"color": "light"
		},
		{
			"type": "TextBlock",
			"text": "color: dark",
			"color": "dark"
		}
	]
}
Adaptive Card

fontType

Type of font to use for rendering

  • Type: FontType?
  • Version : 1.2
  • Required: No
  • Allowed values:
    • "default"
    • "monospace"
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.2",
	"body": [
		{
			"type": "TextBlock",
			"text": "Font type not set."
		},
		{
			"type": "TextBlock",
			"text": "Font type set to *default*.",
			"fontType": "default"
		},
		{
			"type": "TextBlock",
			"text": "Font type set to *monospace*.",
			"fontType": "monospace"
		}
	]
}
Adaptive Card

horizontalAlignment

Controls the horizontal text alignment. When not specified, the value of horizontalAlignment is inherited from the parent container. If no parent container has horizontalAlignment set, it defaults to Left.

  • Type: HorizontalAlignment?
  • Required: No
  • Allowed values:
    • "left"
    • "center"
    • "right"
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "**horizontalAlignment:left**",
			"horizontalAlignment": "left"
		},
		{
			"type": "TextBlock",
			"text": "**horizontalAlignment:center**",
			"horizontalAlignment": "center"
		},
		{
			"type": "TextBlock",
			"text": "**horizontalAlignment:right**",
			"horizontalAlignment": "right"
		}
	]
}
Adaptive Card

isSubtle

If true, displays text slightly toned down to appear less prominent.

  • Type: boolean?
  • Required: No
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "isSubtle:false",
			"isSubtle": false
		},
		{
			"type": "TextBlock",
			"text": "isSubtle:true",
			"isSubtle": true
		}
	]
}
Adaptive Card

maxLines

Specifies the maximum number of lines to display.

  • Type: number
  • Required: No
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
			"wrap": true,
			"maxLines": 1
		},
		{
			"type": "TextBlock",
			"text": "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
			"wrap": true,
			"maxLines": 2
		}
	]
}
Adaptive Card

size

Controls size of text.

  • Type: FontSize?
  • Required: No
  • Allowed values:
    • "default"
    • "small"
    • "medium"
    • "large"
    • "extraLarge"
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "size:default"
		},
		{
			"type": "TextBlock",
			"text": "size:small",
			"size": "small"
		},
		{
			"type": "TextBlock",
			"text": "size:default",
			"size": "default"
		},
		{
			"type": "TextBlock",
			"text": "size:medium",
			"size": "medium"
		},
		{
			"type": "TextBlock",
			"text": "size:large",
			"size": "large"
		},
		{
			"type": "TextBlock",
			"text": "size:extraLarge",
			"size": "extraLarge"
		}
	]
}
Adaptive Card

weight

Controls the weight of TextBlock elements.

  • Type: FontWeight?
  • Required: No
  • Allowed values:
    • "default"
    • "lighter"
    • "bolder"
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "weight: lighter",
			"weight": "lighter"
		},
		{
			"type": "TextBlock",
			"text": "weight: default",
			"weight": "default"
		},
		{
			"type": "TextBlock",
			"text": "weight: bolder",
			"weight": "bolder"
		}
	]
}
Adaptive Card

wrap

If true, allow text to wrap. Otherwise, text is clipped.

  • Type: boolean
  • Required: No
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.0",
	"body": [
		{
			"type": "TextBlock",
			"text": "**wrap: false** Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat",
			"wrap": false
		},
		{
			"type": "TextBlock",
			"text": "**wrap: true** Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
			"wrap": true
		}
	]
}
Adaptive Card

style

The style of this TextBlock for accessibility purposes.

  • Type: TextBlockStyle?
  • Version : 1.5
  • Required: No, default: "default"
  • Allowed values:
    • "default": This is the default style which provide no special styling or behavior.
    • "heading": The TextBlock is a heading. This will apply the heading styling defaults and mark the text block as a heading for accessiblity.
JSON
{
	"$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
	"type": "AdaptiveCard",
	"version": "1.5",
	"body": [
		{
			"type": "TextBlock",
			"text": "Style set to heading",
			"style": "heading",
			"wrap": true
		},
		{
			"type": "TextBlock",
			"text": "Style set to heading, color set to good",
			"style": "heading",
			"color": "good",
			"wrap": true
		},
		{
			"type": "TextBlock",
			"text": "Style set to default",
			"style": "default",
			"wrap": true
		},
		{
			"type": "TextBlock",
			"text": "Style unset",
			"wrap": true
		}
	]
}
Adaptive Card

fallback

Describes what to do when an unknown element is encountered or the requires of this or any children can't be met.

  • Type: Element, FallbackOption
  • Version : 1.2
  • Required: No
  • Allowed values:
    • ActionSet
    • ColumnSet
    • Container
    • FactSet
    • Image
    • ImageSet
    • Input.ChoiceSet
    • Input.Date
    • Input.Number
    • Input.Text
    • Input.Time
    • Input.Toggle
    • Media
    • RichTextBlock
    • Table
    • TextBlock
    • "drop": Causes this element to be dropped immediately when unknown elements are encountered. The unknown element doesn't bubble up any higher.

height

Specifies the height of the element.

  • Type: BlockElementHeight
  • Version : 1.1
  • Required: No
  • Allowed values:
    • "auto": The height of the container will be determined by the height of its contents.
    • "stretch": The container will stretch its height to the available remaining height of the parent container.

separator

When true, draw a separating line at the top of the element.

  • Type: boolean
  • Required: No

spacing

Controls the amount of spacing between this element and the preceding element.

  • Type: Spacing
  • Required: No
  • Allowed values:
    • "default"
    • "none"
    • "small"
    • "medium"
    • "large"
    • "extraLarge"
    • "padding"

id

A unique identifier associated with the item.

  • Type: string
  • Required: No

isVisible

If false, this item will be removed from the visual tree.

  • Type: boolean
  • Version : 1.2
  • Required: No, default: true

requires

A series of key/value pairs indicating features that the item requires with corresponding minimum version. When a feature is missing or of insufficient version, fallback is triggered.

  • Type: Dictionary<string>
  • Version : 1.2
  • Required: No