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Update IHostingEnvironment to IWebHostEnvironment (#21150) 

* Update IHostingEnvironment to IWebHostEnvironment

IHostingEnvironment is obsolete.

* Update aspnetcore/mvc/views/tag-helpers/built-in/environment-tag-helper.md

Co-authored-by: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>

* Update environment-tag-helper.md

Co-authored-by: Rick Anderson <3605364+Rick-Anderson@users.noreply.github.com>
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Steve Smith 2021-01-12 20:29:55 -05:00 committed by GitHub
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aspnetcore/mvc/views/tag-helpers/built-in/environment-tag-helper.md
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@ -22,13 +22,13 @@ For an overview of Tag Helpers, see <xref:mvc/views/tag-helpers/intro>.
`names` accepts a single hosting environment name or a comma-separated list of hosting environment names that trigger the rendering of the enclosed content.
Environment values are compared to the current value returned by [IHostingEnvironment.EnvironmentName](xref:Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName*). The comparison ignores case.
Environment values are compared to the current value returned by [IWebHostEnvironment.EnvironmentName](xref:Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName*). The comparison ignores case.
The following example uses an Environment Tag Helper. The content is rendered if the hosting environment is Staging or Production:
```cshtml
<environment names="Staging,Production">
<strong>HostingEnvironment.EnvironmentName is Staging or Production</strong>
<strong>IWebHostEnvironment.EnvironmentName is Staging or Production</strong>
</environment>
```
@ -40,11 +40,11 @@ The following example uses an Environment Tag Helper. The content is rendered if
### include
The `include` property exhibits similar behavior to the `names` attribute. An environment listed in the `include` attribute value must match the app's hosting environment ([IHostingEnvironment.EnvironmentName](xref:Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName*)) to render the content of the `<environment>` tag.
The `include` property exhibits similar behavior to the `names` attribute. An environment listed in the `include` attribute value must match the app's hosting environment ([IWebHostEnvironment.EnvironmentName](xref:Microsoft.AspNetCore.Hosting.IHostingEnvironment.EnvironmentName*)) to render the content of the `<environment>` tag.
```cshtml
<environment include="Staging,Production">
<strong>HostingEnvironment.EnvironmentName is Staging or Production</strong>
<strong>IWebHostEnvironment.EnvironmentName is Staging or Production</strong>
</environment>
```
@ -54,7 +54,7 @@ In contrast to the `include` attribute, the content of the `<environment>` tag i
```cshtml
<environment exclude="Development">
<strong>HostingEnvironment.EnvironmentName is not Development</strong>
<strong>IWebHostEnvironment.EnvironmentName is not Development</strong>
</environment>
```