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docs(dotnet): add Web.config DSN example for ASP.NET #15876

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docs(dotnet): add Web.config DSN example for ASP.NET
fuguiKz Dec 19, 2025
ca00bec
Merge branch 'master' into docs/dotnet-aspnet-webconfig-dsn
Flash0ver Jan 7, 2026
2c53437
docs(dotnet): keep DSN quick-start; add Web.config alternative
fuguiKz Jan 14, 2026
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22 changes: 20 additions & 2 deletions docs/platforms/dotnet/guides/aspnet/index.mdx
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Expand Up @@ -32,8 +32,6 @@ as well as your logs as breadcrumbs. The logging integrations also capture event
## Configure

You configure the SDK in the `Global.asax.cs`:


```csharp
using System;
using System.Web;
Expand Down Expand Up @@ -91,6 +89,26 @@ public class MvcApplication : HttpApplication
}
```

If you'd prefer not to hardcode your DSN in your source code, you can store it in your `Web.config` file:

```xml {filename:Web.config}
<configuration>
<appSettings>
<add key="SentryDsn" value="___PUBLIC_DSN___" />
</appSettings>
</configuration>
```

And then read it from `ConfigurationManager.AppSettings`:

```csharp
using System.Configuration;

// ...

options.Dsn = ConfigurationManager.AppSettings["SentryDsn"];
```

### Capturing the affected user

When opting-in to [SendDefaultPii](#senddefaultpii), the SDK will automatically read the user from the request by inspecting `HttpContext.User`. Default claim values like `NameIdentifier` for the _Id_ will be used.
Expand Down