Disable or Enable Application Insights For Multiple Environments

Global.asax.cs

public class Global : System.Web.HttpApplication
{
    protected void Application_Start(object sender, EventArgs e)
    {
        InitAppInsights();
    }

    private static void InitAppInsights()
    {
        // Add AppInsights:InstrumentationKey appSetting to web.config
        // <add key="AppInsights:InstrumentationKey" value="" />
        
        TelemetryConfiguration.Active.InstrumentationKey = 
            ConfigurationManager.AppSettings["AppInsights:InstrumentationKey"];
    }
}