Config Injection & Options Pattern in Razor Page

Inject Configuration

To inject configuration settings in your ASP.NET Core application, use Microsoft.Extensions.Configuration and inject IConfiguration into your page or component. Access configuration values using Configuration["KeyName"].

@using Microsoft.Extensions.Configuration
@inject IConfiguration Configuration

<!-- Access configuration value -->
@Configuration["ApplicationInsights:InstrumentationKey"]

Options Pattern

For more structured configuration management, use the options pattern with Microsoft.Extensions.Options. Inject IOptionsMonitor<TOptions> with @inject and access configuration values through OptionsAccessor.Value.PropertyName.

@using Microsoft.Extensions.Options
@inject IOptionsMonitor<ApplicationInsightsOptions> ApplicationInsightsOptionsAccessor

<!-- Access configuration value -->
var instrumentationKey = ApplicationInsightsOptionsAccessor.Value.InstrumentationKey;

For detailed information, refer to the ASP.NET Core documentation on configuration options.