The new Helpers folder in the project, to create the CheckBoxListHelper and RadioBoxListHelper classes.
CheckBoxListHelper code
using System;using System.Collections.Generic;using System.Linq;using System.Linq.Expressions;using System.Text;using System.Web;using System.Web.Mvc;namespace SHH.Helpers{ public static class CheckBoxListHelper { public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, bool isHorizon = true) { return CheckBoxList(helper, name, helper.ViewData[name] as IEnumerable , new { }, isHorizon); } public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IEnumerable selectList, bool isHorizon = true) { return CheckBoxList(helper, name, selectList, new { }, isHorizon); } public static MvcHtmlString CheckBoxListFor (this HtmlHelper helper, Expression > expression, IEnumerable selectList, bool isHorizon = true) { string[] propertys = expression.ToString().Split(".".ToCharArray()); string id = string.Join("_", propertys, 1, propertys.Length - 1); string name = string.Join(".", propertys, 1, propertys.Length - 1); return CheckBoxList(helper, id, name, selectList, new { }, isHorizon); } public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IEnumerable selectList, object htmlAttributes, bool isHorizon = true) { return CheckBoxList(helper, name, name, selectList, htmlAttributes, isHorizon); } public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string id, string name, IEnumerable selectList, object htmlAttributes, bool isHorizon = true) { IDictionary HtmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes); HashSet set = new HashSet (); List list = new List (); string selectedValues = (selectList as SelectList).SelectedValue == null ? string.Empty : Convert.ToString((selectList as SelectList).SelectedValue); if (!string.IsNullOrEmpty(selectedValues)) { if (selectedValues.Contains(",")) { string[] tempStr = selectedValues.Split(','); for (int i = 0; i newHtmlAttributes = HtmlAttributes.DeepCopy(); newHtmlAttributes.Add("value", selectItem.Value); if (selectItem.Selected) { newHtmlAttributes.Add("checked", "checked"); } TagBuilder tagBuilder = new TagBuilder("input"); tagBuilder.MergeAttributes (newHtmlAttributes); string inputAllHtml = tagBuilder.ToString(TagRenderMode.SelfClosing); string containerFormat = isHorizon ? @" " : @" "; stringBuilder.AppendFormat(containerFormat, inputAllHtml, selectItem.Text); } return MvcHtmlString.Create(stringBuilder.ToString()); } private static IDictionary DeepCopy(this IDictionary ht) { Dictionary _ht = new Dictionary (); foreach (var p in ht) { _ht.Add(p.Key, p.Value); } return _ht; } }} RadioBoxListHelper code
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web;using System.Web.Mvc;namespace SHH.Helpers{ public static class RadioBoxListHelper { public static MvcHtmlString RadioBoxList(this HtmlHelper helper, string name) { return RadioBoxList(helper, name, helper.ViewData[name] as IEnumerable , new { }); } public static MvcHtmlString RadioBoxList(this HtmlHelper helper, string name, IEnumerable selectList) { return RadioBoxList(helper, name, selectList, new { }); } public static MvcHtmlString RadioBoxList(this HtmlHelper helper, string name, IEnumerable selectList, object htmlAttributes) { IDictionary HtmlAttributes = HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes); HtmlAttributes.Add("type", "radio"); HtmlAttributes.Add("name", name); StringBuilder stringBuilder = new StringBuilder(); int i = 0; int j = 0; foreach (SelectListItem selectItem in selectList) { string id = string.Format("{0}{1}", name, j++); IDictionary newHtmlAttributes = HtmlAttributes.DeepCopy(); newHtmlAttributes.Add("value", selectItem.Value); newHtmlAttributes.Add("id", id); var selectedValue = (selectList as SelectList).SelectedValue; if (selectedValue == null) { if (i++ == 0) newHtmlAttributes.Add("checked", null); } else if (selectItem.Value == selectedValue.ToString()) { newHtmlAttributes.Add("checked", null); } TagBuilder tagBuilder = new TagBuilder("input"); tagBuilder.MergeAttributes (newHtmlAttributes); string inputAllHtml = tagBuilder.ToString(TagRenderMode.SelfClosing); stringBuilder.AppendFormat(@" {0} ", inputAllHtml, selectItem.Text, id); } return MvcHtmlString.Create(stringBuilder.ToString()); } private static IDictionary DeepCopy(this IDictionary ht) { Dictionary _ht = new Dictionary (); foreach (var p in ht) { _ht.Add(p.Key, p.Value); } return _ht; } }}
Enumeration to help the class code
using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace SHH.Helpers{ /// /// Enumeration helper classes /// public class EnumHelper { /// /// Such as: "enum1, enum2 conversion, enum3" string to the enumeration values /// /// Enumeration types /// The enumerated string /// (string obj) { if (string.IsNullOrEmpty(obj)) return default(T); else return (T)Enum.Parse(typeof(T), obj); } public static T TryParse (string obj, T defT = default(T)) { try { return Parse (obj); } catch { return defT; } } public static readonly string ENUM_TITLE_SEPARATOR = ","; /// /// According to the enumeration value, return a string describing the /// If multiple enumeration, return to the "," separated string /// /// /// /// According to the enumeration value, return a string describing the /// If multiple enumeration, return to the "," separated string /// /// /// /// Returns the key value pairs, built for the name of the specified enumeration of EnumTitle and synonym name, value is the enumeration entries /// /// Enumeration types /// /// GetTitleAndSynonyms (Enum language = null) where T : struct { Dictionary ret = new Dictionary (); //Enumeration values Array arrEnumValue = typeof(T).GetEnumValues(); foreach (object enumValue in arrEnumValue) { System.Reflection.FieldInfo fi = typeof(T).GetField(enumValue.ToString()); if (fi == null) { continue; } EnumTitleAttribute[] arrEnumTitleAttr = fi.GetCustomAttributes(typeof(EnumTitleAttribute), false) as EnumTitleAttribute[]; if (arrEnumTitleAttr == null || arrEnumTitleAttr.Length <1 || !arrEnumTitleAttr[0].IsDisplay) { continue; } if (!ret.ContainsKey(arrEnumTitleAttr[0].Title)) { ret.Add(arrEnumTitleAttr[0].Title, (T)enumValue); } if (arrEnumTitleAttr[0].Synonyms == null || arrEnumTitleAttr[0].Synonyms.Length <1) { continue; } foreach (string s in arrEnumTitleAttr[0].Synonyms) { if (!ret.ContainsKey(s)) { ret.Add(s, (T)enumValue); } } }//using return ret; } /// /// Based on the enumeration to obtain contains all all values and describe the hash table, the text is composed by the application in the enumeration values on the EnumTitleAttribute set /// /// GetItemList (Enum language = null) where T : struct { return GetItemValueList (false, language); } /// /// Based on the enumeration to obtain contains all all values and describe the hash table, the text is composed by the application in the enumeration values on the EnumTitleAttribute set /// /// GetAllItemList (Enum language = null) where T : struct { return GetItemValueList (true, language); } /// /// Access to enumerate all the title, the text is composed by the application in the enumeration values on the EnumTitleAttribute set /// /// Enumeration types /// Language /// GetItemValueList (Enum language = null) where T : struct { return GetItemValueList (false, language); } /// /// Access to enumerate all the title, the text is composed by the application in the enumeration values on the EnumTitleAttribute set /// /// Enumeration types /// Whether to build the "all" /// Language /// GetItemValueList (bool isAll, Enum language = null) where T : struct { if (!typeof(T).IsEnum) { throw new Exception("The parameter must be enumerated！"); } Dictionary ret = new Dictionary (); var titles = EnumHelper.GetItemAttributeList ().OrderBy(t => t.Value.Order); foreach (var t in titles) { if (!isAll && (!t.Value.IsDisplay || t.Key.ToString() == "None")) continue; if (t.Key.ToString() == "None" && isAll) { ret.Add((TKey)(object)t.Key, "All"); } else { if (!string.IsNullOrEmpty(t.Value.Title)) ret.Add((TKey)(object)t.Key, t.Value.Title); } } return ret; } public static List GetItemKeyList (Enum language = null) where T : struct { List list = new List (); Array array = typeof(T).GetEnumValues(); foreach (object t in array) { list.Add((T)t); } return list; } public static Dictionary GetItemAttributeList (Enum language = null) where T : struct { if (!typeof(T).IsEnum) { throw new Exception("The parameter must be enumerated！"); } Dictionary ret = new Dictionary (); Array array = typeof(T).GetEnumValues(); foreach (object t in array) { EnumTitleAttribute att = GetEnumTitleAttribute(t as Enum, language); if (att != null) ret.Add((T)t, att); } return ret; } /// /// Access to enumerate all the title, the text is composed by the application in the enumeration values on the EnumTitleAttribute set /// /// Enumeration types /// Whether to build the "all" /// Language /// GetAllItemValueList (Enum language = null) where T : struct { return GetItemValueList (true, language); } /// /// Gets an enumeration pairs /// /// Enumeration types /// Exclude the enumeration /// GetEnumDictionary (IEnumerable exceptTypes = null) where TEnum : struct { var dic = GetItemList (); Dictionary dicNew = new Dictionary (); foreach (var d in dic) { if (exceptTypes != null && exceptTypes.Contains(d.Key)) { continue; } dicNew.Add(d.Key.GetHashCode(), d.Value); } return dicNew; } } public class EnumTitleAttribute : Attribute { private bool _IsDisplay = true; public EnumTitleAttribute(string title, params string[] synonyms) { Title = title; Synonyms = synonyms; Order = int.MaxValue; } public bool IsDisplay { get { return _IsDisplay; } set { _IsDisplay = value; } } public string Title { get; set; } public string Description { get; set; } public string Letter { get; set; } /// /// Synonyms /// public string[] Synonyms { get; set; } public int Category { get; set; } public int Order { get; set; } }} Enumeration data code
using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace SHH.Helpers{ public class EnumData { /// /// Gender /// public enum EnumSex { [EnumTitle("Hello, sir")] Sir = 1, [EnumTitle("Ma'am")] Miss = 2 } /// /// Make an appointment /// public enum EnumBespeakDate { [EnumTitle("Working days (Monday to Friday)")] BespeakDate1 = 1, [EnumTitle("The weekend")] BespeakDate2 = 2, [EnumTitle("Weekdays or weekends")] BespeakDate3 = 3 } /// /// Appointments /// public enum EnumBespeakTime { [EnumTitle("Morning")] BespeakTime1 = 1, [EnumTitle("The afternoon")] BespeakTime2 = 2, [EnumTitle("Night")] BespeakDate3 = 3, [EnumTitle("At any time")] BespeakDate4= 4 } /// /// The price /// public enum EnumPriceGroup { [EnumTitle("Unlimited", IsDisplay = false)] None = 0, [EnumTitle("300000 the following")] Below30 = 1, [EnumTitle("30-50 million")] From30To50 = 2, [EnumTitle("50-80 million")] From50To80 = 3, [EnumTitle("80-100 million")] From80To100 = 4, [EnumTitle("100-150 million")] From100To50 = 5, [EnumTitle("150-200 million")] From150To200 = 6, [EnumTitle("More than 2000000")] Above200 = 7 } /// /// The measure of area /// public enum EnumAcreageGroup { [EnumTitle("Unlimited", IsDisplay = false)] None = 0, [EnumTitle("The following 50mm")] Below50 = 1, [EnumTitle("50-70mm")] From50To70 = 2, [EnumTitle("70-90mm")] From70To90 = 3, [EnumTitle("90-120mm")] From90To120 = 4, [EnumTitle("120-150mm")] From120To150 = 5, [EnumTitle("150-200mm")] From150To200 = 6, [EnumTitle("200-300mm")] From200To300 = 7, [EnumTitle("More than 300mm")] Above300 = 8 } /// /// Fangxing two chamber room five room five room above /// public enum EnumRoomGroup { [EnumTitle("Unlimited", IsDisplay = false)] None = 0, [EnumTitle("A room")] Room1 = 1, [EnumTitle("Room two")] Room2 = 2, [EnumTitle("3")] Room3 = 3, [EnumTitle("Four")] Room4 = 4, [EnumTitle("Room five")] Room5 = 5, [EnumTitle("More than five rooms")] Above5 = 6 } }} Controller code[RadioBox]
ViewData.Add("EnumPriceGroup", new SelectList(EnumHelper.GetItemValueList (), "Key", "Value")); ViewData.Add("EnumAcreageGroup", new SelectList(EnumHelper.GetItemValueList (), "Key", "Value")); ViewData.Add("EnumRoomGroup", new SelectList(EnumHelper.GetItemValueList (), "Key", "Value")); View code[RadioBox] @Html.RadioBoxList("EnumPriceGroup")@Html.RadioBoxList("EnumAcreageGroup")@Html.RadioBoxList("EnumRoomGroup") Controller code[CheckBox]
TagRepository tagrep = new TagRepository();
var tag = tagrep.GetModelList().Where(d=>d.TypeID==1); ViewBag.Tags = new SelectList(tag, "TagID", "TagName"); var tag1 = tagrep.GetModelList().Where(d => d.TypeID == 2); ViewBag.Tags1 = new SelectList(tag1, "TagID", "TagName"); var tag2 = tagrep.GetModelList().Where(d => d.TypeID == 3); ViewBag.Tags2 = new SelectList(tag2, "TagID", "TagName");
////// Add GET: /admin/House/Add /// /// The entity class /// ///[Authorize, HttpPost, ValidateInput(false)] public ActionResult Add(House model, FormCollection fc,int[] Tags, int[] Tags1,int[] Tags2) { model.State = 1; model.CreateTime = DateTime.Now; HouseControllerrep.SaveOrEditModel(model); if (Tags.Length > 0) { foreach (int gsi in Tags){ TagHouseMapping thmtag = new TagHouseMapping(); thmtag.TagID=gsi; thmtag.HouseID = model.HouseID; thmtag.State = 1; thmtag.CreateTime = DateTime.Now; TagCrep.SaveOrEditModel(thmtag); } } if (Tags1.Length > 0) { foreach (int gsi in Tags1) { TagHouseMapping thmtag = new TagHouseMapping(); thmtag.TagID = gsi; thmtag.HouseID = model.HouseID; thmtag.State = 1; thmtag.CreateTime = DateTime.Now; TagCrep.SaveOrEditModel(thmtag); } } if (Tags2.Length > 0) { foreach (int gsi in Tags2) { TagHouseMapping thmtag = new TagHouseMapping(); thmtag.TagID = gsi; thmtag.HouseID = model.HouseID; thmtag.State = 1; thmtag.CreateTime = DateTime.Now; TagCrep.SaveOrEditModel(thmtag); } } return RedirectToAction("Index"); } #endregion
View code[CheckBox]
@Html.CheckBoxList("Tags") @Html.CheckBoxList("Tags1") @Html.CheckBoxList("Tags2")
The effect of CheckBoxList
The effect of RadioBoxList
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