do test

Yavsc/Helpers/PageHelpers.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.AspNet.Http;
+using Microsoft.AspNet.Mvc.Rendering;
+using Microsoft.AspNet.Mvc;
+using Microsoft.Data.Entity;
+
+namespace Yavsc.Server.Helpers
+{
+    public static class PageHelpers
+    {
+        public static List<SelectListItem> CreateSelectListItems (this Type enumType, object selectedValue =null)
+        {
+            string selectedName = (selectedValue != null) ? enumType.GetEnumName(selectedValue) : null;
+
+            var items = new List<SelectListItem> ();
+            var names = enumType.GetEnumNames();
+            var values = enumType.GetEnumValues();
+            for (int index = 0; index < names.Length; index++)
+            {
+                var itemName = names[index];
+                items.Add(new SelectListItem() {
+                Value = values.GetValue(index).ToString(), Text = itemName, Selected = ( itemName == selectedName)
+                }) ;
+            }
+            var list = new SelectList(items);
+            return items;
+
+        }
+
+        public static List<SelectListItem> CreateSelectListItems<T> (this DbSet<T>data,
+         Func<T,string> dataField,
+        Func<T,string> displayField = null, object selectedValue =null) where T : class
+        {
+            if (displayField == null) displayField = dataField;
+             var items = new List<SelectListItem> ();
+             foreach (var dataItem in data)
+             {
+                var itemVal = dataField(dataItem);
+                var itemName = displayField(dataItem);
+                items.Add(new SelectListItem() {
+                Value = itemVal, Text = itemName, Selected = ( selectedValue?.Equals(itemVal) ?? false )
+                }) ;
+             }
+             return items;
+        }
+
+    }
+}