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.NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows#3021

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.NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows#3021
crickman wants to merge 10 commits into
crickman/dependency-update-declarative-objectmodelfrom
crickman/messaging-handling-fix-declarative-workflows

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@crickman crickman commented Dec 23, 2025 •
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Motivation and Context

Ensures media-type and message id are persisted when converting between ChatMessage and the object model representation.

Fixes: #3020

Note: Relies on dependency update in PR #3017 (rebase this PR to main after merged)

Description

  • Makes use of update to Object Model update that supports MediaType
  • Tests added

Contribution Checklist

  • The code builds clean without any errors or warnings
  • The PR follows the Contribution Guidelines
  • All unit tests pass, and I have added new tests where possible
  • Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

@crickman crickman self-assigned this Dec 23, 2025
@crickman crickman added .NET Usage: [Issues, PRs], Target: .Net workflows Usage: [Issues, PRs], Target: Workflows labels Dec 23, 2025
@crickman crickman added the v1.0 label Dec 23, 2025
@crickman crickman moved this to In Review in Agent Framework Dec 23, 2025
crickman
crickman commented Dec 26, 2025
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Comment thread dotnet/src/Microsoft.Agents.AI.Workflows.Declarative/Extensions/ChatMessageExtensions.cs
private static string InferMediaType(string value)
{
// Base64 encoded content includes media type
if (value.StartsWith("data:", StringComparison.OrdinalIgnoreCase))

@crickman crickman Dec 26, 2025

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Note: ImageUrl is constrained to image types for public url, but allows for PDF for base64 encoded data: urls.

dmytrostruk and others added 9 commits January 28, 2026 19:58
@dmytrostruk
.NET: Python: [BREAKING] Renamed Github to GitHub (#3486)
45a020b 
* Renamed Github to GitHub

* Small fix

* Updated package versions
@crickman @peibekwe
.NET - [Breaking]: Update Declarative Object Model + Dependencies (#3017
75a8335 
)

* Builds locally and tests pass

* Fix typo

* Reverted nuget config change to remove internal feed and map to new public object model package with renames.

* Renaming Bot object model in additional sample.

---------

Co-authored-by: Peter Ibekwe <peibekwe@microsoft.com>
@larohra
Update code owners (#3491)
1f8463f
@eavanvalkenburg
Python: added generic types to ChatOptions and ChatResponse/AgentResp…
1226828 
…onse for Response Format (#3305)

* added generic types to ChatOptions and ChatResponse/AgentResponse for response format

* fix typevar import

* fix for older python versions

* fix missing import

* fixed imports

* fixed mypy

* mypy fix
@larohra
Update durabletask package (#3492)
474b313
@crickman @peibekwe
Updated
51e941f
@peibekwe
Fixed tests failing on net472 but not on dotnet10
45eea5d
@peibekwe
Merge branch 'main' into crickman/messaging-handling-fix-declarative-…
fa1dc97 
…workflows
@peibekwe
Merge from main
6b0ee3b
@peibekwe peibekwe requested a review from a team as a code owner January 29, 2026 18:05
@markwallace-microsoft markwallace-microsoft added documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs python Usage: [Issues, PRs], Target: Python lab labels Jan 29, 2026
@github-actions github-actions Bot changed the title .NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows Python: .NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows Jan 29, 2026
@peibekwe peibekwe removed the request for review from a team January 29, 2026 18:12
@peibekwe peibekwe mentioned this pull request Jan 29, 2026
Merged
4 tasks
@peibekwe peibekwe closed this Jan 30, 2026
@github-project-automation github-project-automation Bot moved this from In Review to Done in Agent Framework Jan 30, 2026
@peibekwe peibekwe reopened this Jan 30, 2026
@peibekwe

peibekwe commented Jan 30, 2026

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Closing this PR as it's been checked in as part of #3505

@peibekwe peibekwe closed this Jan 30, 2026
@crickman crickman deleted the crickman/messaging-handling-fix-declarative-workflows branch February 4, 2026 20:26
@crickman crickman added declarative-workflow and removed python Usage: [Issues, PRs], Target: Python labels Feb 6, 2026
@crickman crickman changed the title Python: .NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows .NET Workflows - Support fidelity when converting to and from ChatMessage in declarative workflows Feb 6, 2026
@moonbox3 moonbox3 added declarative Usage: [Issues, PRs], Target: declarative agents and workflows and removed declarative-workflow labels Jun 17, 2026
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@markwallace-microsoft markwallace-microsoft markwallace-microsoft approved these changes
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declarative Usage: [Issues, PRs], Target: declarative agents and workflows documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs .NET Usage: [Issues, PRs], Target: .Net workflows Usage: [Issues, PRs], Target: Workflows

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7 participants

@crickman @peibekwe @markwallace-microsoft @moonbox3 @dmytrostruk @larohra @eavanvalkenburg