Add cascading dropdown how-to

Author: VicTachev

grid/cascading-dropdown-filters/CascadingDropDownFilters.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CascadingDropDownFilters", "CascadingDropDownFilters\CascadingDropDownFilters.csproj", "{8ED3E145-6302-4F94-B6E2-6F9A981A2E61}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8ED3E145-6302-4F94-B6E2-6F9A981A2E61}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8ED3E145-6302-4F94-B6E2-6F9A981A2E61}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8ED3E145-6302-4F94-B6E2-6F9A981A2E61}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8ED3E145-6302-4F94-B6E2-6F9A981A2E61}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

grid/cascading-dropdown-filters/CascadingDropDownFilters/App_Data/Sample.mdf

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.Mvc;
+using System.Web.Routing;
+
+namespace CascadingDropDownFilters
+{
+    public class RouteConfig
+    {
+        public static void RegisterRoutes(RouteCollection routes)
+        {
+            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
+
+            routes.MapRoute(
+                name: "Default",
+                url: "{controller}/{action}/{id}",
+                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
+            );
+        }
+    }
+}

grid/cascading-dropdown-filters/CascadingDropDownFilters/App_Data/Sample_log.ldf

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+body {
+    padding-top: 50px;
+    padding-bottom: 20px;
+}
+
+/* Set padding to keep content from hitting the edges */
+.body-content {
+    padding-left: 15px;
+    padding-right: 15px;
+}
+
+/* Override the default bootstrap behavior where horizontal description lists 
+   will truncate terms that are too long to fit in the left column 
+*/
+.dl-horizontal dt {
+    white-space: normal;
+}
+
+/* Set width on the form input elements since they're 100% wide by default */
+input,
+select,
+textarea {
+    max-width: 280px;
+}