Update Adaptive Cards package

[corinagum]

• Fixes error where cards would not render in mobile when AC version was not set - default version 1.5 will be applied
• Updated generated Adaptive Cards core file Core.cs from latest codegen output
• Updated InvokeAction.cs to use new IUnion type for InvokeSubmitActionData value parameter
• Marked IMBackAction, InvokeAction, MessageBackAction, SignInAction, and TaskFetchAction with [Obsolete], pointing to their generated replacements
• Other default values added: isEnabled, action mode defaults to "primary", action style "default, requires defaults to new HostCapabilities.
• msteams added to several types: AdaptiveCard, SubmitAction, Image, SubmitActionData
• New required constructor parameters: AdaptiveCard(body), ChoiceSetInput(choices)
• StyleEnum class removed (replaced by ChoiceSetInputStyle)

[Copilot]

Pull request overview

Updates the Microsoft.Teams.Cards Adaptive Cards action helpers to align with newly generated Teams-specific *SubmitActionData models, and begins deprecating the legacy convenience action types.

Changes:

• Marked legacy *Action helper classes as obsolete in favor of generated *SubmitActionData replacements.
• Updated InvokeAction to construct InvokeSubmitActionData using the new IUnion-based value type.
• Added/updated XML docs to reflect the deprecation guidance.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
Libraries/Microsoft.Teams.Cards/Actions/TaskFetchAction.cs	Added [Obsolete] + deprecation docs directing to TaskFetchSubmitActionData.
Libraries/Microsoft.Teams.Cards/Actions/SignInAction.cs	Added [Obsolete] + deprecation docs directing to SigninSubmitActionData.
Libraries/Microsoft.Teams.Cards/Actions/MessageBackAction.cs	Added [Obsolete] + deprecation docs directing to MessageBackSubmitActionData.
Libraries/Microsoft.Teams.Cards/Actions/InvokeAction.cs	Added [Obsolete] and updated InvokeSubmitActionData construction to use Union<object, CollabStageInvokeDataValue>.
Libraries/Microsoft.Teams.Cards/Actions/IMBackAction.cs	Added [Obsolete] + deprecation docs directing to ImBackSubmitActionData.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Updates the Teams Adaptive Cards library to the latest generated model output and migrates usage away from deprecated hand-written action types toward generated submit-action data types.

Changes:

• Updated tests to use new required constructors (e.g., AdaptiveCard(body), ChoiceSetInput(choices)).
• Updated the Dialogs sample to launch task modules via Action.Submit + TaskFetchSubmitActionData instead of TaskFetchAction.
• Marked legacy action helper classes (IMBackAction, InvokeAction, MessageBackAction, SignInAction, TaskFetchAction) as [Obsolete] and pointed to generated replacements.

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Tests/Microsoft.Teams.Cards.Tests/AdaptiveCardsTest.cs	Migrates test card construction to new required constructors.
Samples/Samples.Dialogs/Program.cs	Switches task/fetch launching to generated submit-action data; adds helper factory.
Libraries/Microsoft.Teams.Cards/Actions/TaskFetchAction.cs	Marks legacy TaskFetchAction obsolete in favor of generated submit-action data.
Libraries/Microsoft.Teams.Cards/Actions/SignInAction.cs	Marks legacy SignInAction obsolete in favor of generated submit-action data.
Libraries/Microsoft.Teams.Cards/Actions/MessageBackAction.cs	Marks legacy MessageBackAction obsolete in favor of generated submit-action data.
Libraries/Microsoft.Teams.Cards/Actions/InvokeAction.cs	Marks legacy InvokeAction obsolete; updates to new union-based value shape.
Libraries/Microsoft.Teams.Cards/Actions/IMBackAction.cs	Marks legacy IMBackAction obsolete in favor of generated submit-action data.

Comments suppressed due to low confidence (1)

Samples/Samples.Dialogs/Program.cs:176

• AdaptiveCard no longer has a parameterless constructor (it now requires the body list in its constructor). This new Microsoft.Teams.Cards.AdaptiveCard { Body = ... } initialization will fail to compile; switch to constructing the card with the body list via the constructor and keep Actions/other properties in the object initializer.

static Microsoft.Teams.Cards.AdaptiveCard CreateDialogLauncherCard()
{
    var card = new Microsoft.Teams.Cards.AdaptiveCard
    {
        Body = new List<Microsoft.Teams.Cards.CardElement>
        {
            new Microsoft.Teams.Cards.TextBlock("Select the examples you want to see!")
            {

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.