From 70a3017b12b4e9648f65acea2c9ad37e383763b0 Mon Sep 17 00:00:00 2001
From: David Fowler <davidfowl@gmail.com>
Date: Mon, 19 Jun 2017 12:41:43 -0700
Subject: [PATCH] Add overload that takes an IConfigurationBuilder (#1107)

---
 .../WebHostBuilderExtensions.cs                  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/Microsoft.AspNetCore.Hosting/WebHostBuilderExtensions.cs b/src/Microsoft.AspNetCore.Hosting/WebHostBuilderExtensions.cs
index 8427d51e77..fd094379a7 100644
--- a/src/Microsoft.AspNetCore.Hosting/WebHostBuilderExtensions.cs
+++ b/src/Microsoft.AspNetCore.Hosting/WebHostBuilderExtensions.cs
@@ -5,6 +5,7 @@ using System;
 using System.Reflection;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting.Internal;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Logging;
@@ -107,6 +108,21 @@ namespace Microsoft.AspNetCore.Hosting
             });
         }
 
+        /// <summary>
+        /// Adds a delegate for configuring the <see cref="IConfigurationBuilder"/> that will construct an <see cref="IConfiguration"/>.
+        /// </summary>
+        /// <param name="hostBuilder">The <see cref="IWebHostBuilder"/> to configure.</param>
+        /// <param name="configureDelegate">The delegate for configuring the <see cref="IConfigurationBuilder" /> that will be used to construct an <see cref="IConfiguration" />.</param>
+        /// <returns>The <see cref="IWebHostBuilder"/>.</returns>
+        /// <remarks>
+        /// The <see cref="IConfiguration"/> and <see cref="ILoggerFactory"/> on the <see cref="WebHostBuilderContext"/> are uninitialized at this stage.
+        /// The <see cref="IConfigurationBuilder"/> is pre-populated with the settings of the <see cref="IWebHostBuilder"/>.
+        /// </remarks>
+        public static IWebHostBuilder ConfigureAppConfiguration(this IWebHostBuilder hostBuilder, Action<IConfigurationBuilder> configureDelegate)
+        {
+            return hostBuilder.ConfigureAppConfiguration((context, builder) => configureDelegate(builder));
+        }
+
         /// <summary>
         /// Adds a delegate for configuring the provided <see cref="LoggerFactory"/>. This may be called multiple times.
         /// </summary>