Add code snippet to credential chains doc #49637
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scottaddie
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a team,
JonathanCrd,
alexwolfmsft,
christothes and
jsquire
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Pull Request Overview
This PR adds a code example demonstrating the use of the DefaultAzureCredential constructor overload that accepts an environment variable name. The documentation is updated to provide a concrete code sample for readers.
- Adds a new code snippet (
snippet_DacEnvVar) showing how to use the constructor overload withDefaultEnvironmentVariableName. - Updates the markdown documentation to reference this new snippet in two locations where the constructor overload is mentioned.
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| docs/azure/sdk/snippets/authentication/credential-chains/Program.cs | Adds new code snippet demonstrating DefaultAzureCredential constructor with environment variable parameter |
| docs/azure/sdk/authentication/credential-chains.md | Updates documentation date and adds references to new code snippet in two sections discussing environment variable usage |
christothes
reviewed
Nov 5, 2025
| > The `AZURE_TOKEN_CREDENTIALS` environment variable supports individual credential names in `Azure.Identity` package versions 1.15.0 and later. | ||
| To ensure the environment variable is defined and set to a supported string, use constructor overload <xref:Azure.Identity.DefaultAzureCredential.%23ctor(System.String,Azure.Identity.DefaultAzureCredentialOptions)?displayProperty=name>. | ||
| To ensure the environment variable is defined and set to a supported string, use constructor overload <xref:Azure.Identity.DefaultAzureCredential.%23ctor(System.String,Azure.Identity.DefaultAzureCredentialOptions)?displayProperty=name>: |
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I think we validate the environment variable value no matter which approach you take. Should we reword this so that it says something like - "DefaultAzureCredential will validate the value set for the enviornmnent variable and will throw if validation fails."
gewarren
approved these changes
Nov 6, 2025
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Add a code sample showing how to pass the env var to the DAC ctor
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