Added RedirectToAction overload with no arguments

src/Microsoft.AspNetCore.Mvc.Core/ControllerBase.cs

@@ -456,6 +456,36 @@ namespace Microsoft.AspNetCore.Mvc
             return new LocalRedirectResult(localUrl: localUrl, permanent: true, preserveMethod: true);
         }
 
+        /// <summary>
+        /// Redirects (<see cref="StatusCodes.Status302Found"/>) to an action with the same name as current one.
+        /// The 'controller' and 'action' names are retrieved from the ambient values of the current request.
+        /// </summary>
+        /// <returns>The created <see cref="RedirectToActionResult"/> for the response.</returns>
+        /// <example>
+        /// A POST request to an action named "Product" updates a product and redirects to an action, also named
+        /// "Product", showing details of the updated product.
+        /// <code>
+        /// [HttpGet]
+        /// public IActionResult Product(int id)
+        /// {
+        ///     var product = RetrieveProduct(id);
+        ///     return View(product);
+        /// }
+        ///
+        /// [HttpPost]
+        /// public IActionResult Product(int id, Product product)
+        /// {
+        ///     UpdateProduct(product);
+        ///     return RedirectToAction();
+        /// }
+        /// </code>
+        /// </example>
+        [NonAction]
+        public virtual RedirectToActionResult RedirectToAction()
+        {
+            return RedirectToAction(actionName: null);
+        }
+
         /// <summary>
         /// Redirects (<see cref="StatusCodes.Status302Found"/>) to the specified action using the <paramref name="actionName"/>.
         /// </summary>

test/Microsoft.AspNetCore.Mvc.FunctionalTests/BasicTests.cs

@@ -402,6 +402,24 @@ namespace Microsoft.AspNetCore.Mvc.FunctionalTests
             Assert.Equal(expected, response.Trim());
         }
 
+        [Fact]
+        public async Task RedirectToAction_WithEmptyActionName_UsesAmbientValue()
+        {
+            // Arrange
+            var product = new List<KeyValuePair<string, string>>();
+            product.Add(new KeyValuePair<string, string>("SampleInt", "20"));
+
+            // Act
+            var response = await Client.PostAsync("/Home/Product", new FormUrlEncodedContent(product));
+
+            // Assert
+            Assert.Equal(HttpStatusCode.Redirect, response.StatusCode);
+            Assert.NotNull(response.Headers.Location);
+            Assert.Equal("/Home/Product", response.Headers.Location.ToString());
+
+            var responseBody = await Client.GetStringAsync("/Home/Product");
+            Assert.Equal("Get Product", responseBody);
+        }
         [Fact]
         public async Task ActionMethod_ReturningActionMethodOfT_WithBadRequest()
         {

test/WebSites/BasicWebSite/Controllers/HomeController.cs

@@ -108,5 +108,17 @@ namespace BasicWebSite.Controllers
         {
             return ControllerContext.ActionDescriptor.Properties["description"].ToString();
         }
+
+        [HttpGet]
+        public IActionResult Product()
+        {
+            return Content("Get Product");
+        }
+
+        [HttpPost]
+        public IActionResult Product(Product product)
+        {
+            return RedirectToAction();
+        }
     }
 }