How to redirect root to swagger in Asp.Net Core 2.x? (edit)

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, IApplicationLifetime applicationLifetime, ILoggerFactory loggerFactory)
 {
     app.UseStartupService(env, applicationLifetime, configuration: Configuration, loggerFactory: loggerFactory);
     app.UseProductionStartupService(env, applicationLifetime, Configuration);
     app.UseCustomService(Configuration);

     var option = new RewriteOptions();
     option.AddRedirect("^$", "swagger");
     app.UseRewriter(option);

     app.UseMvc();
 }

https://stackoverflow.com/questions/49290683/how-to-redirect-root-to-swagger-in-asp-net-core-2-x

In Startup.cs

public void Configure(IApplicationBuilder app, IHostingEnvironment env)

before

app.UseMvc();

add

var option = new RewriteOptions();
option.AddRedirect("^$", "swagger");
app.UseRewriter(option);

Set default page (C#)

https://docs.microsoft.com/en-us/iis/configuration/system.webserver/defaultdocument/

Set default page for your website in Web.config

https://www.aspsnippets.com/Articles/Set-default-page-for-your-website-in-IIS-using-WebConfig-file-in-ASPNet.aspx

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <location path="." inheritInChildApplications="false">
    <system.webServer>
        <handlers>
            <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified" />
        </handlers>
        <aspNetCore processPath="bin\IISSupport\VSIISExeLauncher.exe" arguments="-argFile IISExeLauncherArgs.txt" stdoutLogEnabled="false">
            <environmentVariables />
        </aspNetCore>
        <modules runAllManagedModulesForAllRequests="false">
            <remove name="WebDAVModule" />
        </modules>
        <directoryBrowse enabled="true" />
        <defaultDocument>
            <files>
                <clear />
                <add value="~/swagger/index.html" />
            </files>
        </defaultDocument>
    </system.webServer>
    </location>
</configuration>

How to set in Visual Studio Startup Page in web config

https://forums.asp.net/t/1934284.aspx?How+to+set+in+Visual+Studio+Startup+Page+in+web+config+