HtmlHelper Extensions codes:
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web.Mvc;
namespace MvcAppValidate.Extensions{ public static class HtmlHelperExtensions { #region extensions for checkboxlist public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IDictionary<string, string> items) {
return CheckBoxList(helper, name, items, null, null);
} public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IDictionary<string, string> items, IDictionary<string, object> checkboxHtmlAttributes) {
return CheckBoxList(helper, name, items, null, checkboxHtmlAttributes);
} public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IDictionary<string, string> items, IEnumerable<string> selectedValues) {
return CheckBoxList(helper, name, items, selectedValues, null);
} public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IDictionary<string, string> items, IEnumerable<string> selectedValues, IDictionary<string, object> checkboxHtmlAttributes) {
var selectListItems = from i in items
select new SelectListItem
{
Text = i.Key,
Value = i.Value,
Selected = (selectedValues != null && selectedValues.Contains(i.Value))
};
return CheckBoxList(helper, name, selectListItems, checkboxHtmlAttributes);
} public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IEnumerable<SelectListItem> items) {
return CheckBoxList(helper, name, items, null);
} public static MvcHtmlString CheckBoxList(this HtmlHelper helper, string name, IEnumerable<SelectListItem> items, IDictionary<string, object> checkboxHtmlAttributes) {
var output = new StringBuilder();
foreach (var item in items) {
output.Append("<div class=/"fields/"><label>");
var checkboxList = new TagBuilder("input");
checkboxList.MergeAttribute("type", "checkbox");
checkboxList.MergeAttribute("name", name);
checkboxList.MergeAttribute("value", item.Value);
// Check to see if it’s checked
if (item.Selected)
checkboxList.MergeAttribute("checked", "checked");
// Add any attributes
if (checkboxHtmlAttributes != null)
checkboxList.MergeAttributes(checkboxHtmlAttributes);
checkboxList.SetInnerText(item.Text);
output.Append(checkboxList.ToString(TagRenderMode.SelfClosing));
output.Append(" " + item.Text + "</label></div>");
}
return MvcHtmlString.Create(output.ToString());
} #endregion #region extensions for CreateHyperLink public static MvcHtmlString A(this HtmlHelper helper, string target, string text) { return MvcHtmlString.Create(String.Format("<a href='{0}'>{1}</a>", target, text)); }
#endregion }}
Jquery demo controller codes:
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using MvcAppEntities;using System.Text;
namespace MvcAppDemoCly.Controllers{ public class JqueryDemoController : Controller { // // GET: /JqueryDemo/
public ActionResult JqueryCheckboxList() { AjaxWcfService.AjaxEnabledWcfService wcfService = new AjaxWcfService.AjaxEnabledWcfService(); var userItems = wcfService.GetUsers(); ViewData["userItems"] = new SelectList(userItems, "ID", "Email");
return View(); }
[HttpPost] public string GetCheckedUserIds() { var checkedUserIds = Request.Form["SelectedUserIds"]; //ViewData["CheckedUserIds"] = checkedUserIds; //return View(@"JqueryCheckboxList"); return checkedUserIds; }
}
View page code:
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<IEnumerable<MvcAppDemoCly.Models.User>>" %>
<%@ Import Namespace="MvcAppValidate.Extensions" %><asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server"> JqueryCheckboxList</asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> <% var users = ViewData["userItems"] as SelectList; %> <h2> JqueryCheckboxList</h2> <% if (ViewData["CheckedUserIds"] != null) {%> <%: "You had selected UserIds:" + ViewData["CheckedUserIds"]%> <%} %> <%: Html.CheckBox("chkAll")%><%: Html.Label("secect all/unselect all") %> <%using (Html.BeginForm("GetCheckedUserIds", "JqueryDemo", FormMethod.Post)) { %> <% if (users != null) { %> <%: Html.CheckBoxList("chkUsers", users)%> <%} %> <%--<input type="submit" value="Submit" />--%> <input type="button" value="Submit" οnclick="javascript:GetSelectedUserIds();" /> <%} %> <%: Html.A("http://www.163.com","163 com") %> <script language="javascript" type="text/javascript">
$(document).ready(function () { $("#chkAll").click(function () { //alert($(this).attr("checked")); var checked = $(this).attr("checked"); $("input:checkbox[name='chkUsers']").each(function () { //alert(checked); $(this).attr("checked", checked); }); });
//$("a").click(ClickATag); }); function GetSelectedUserIds() { $.ajax({ type: "post", datatype: "text", data: { "SelectedUserIds": GetCheckedValues() }, url: "/JqueryDemo/GetCheckedUserIds", success: function (res) { alert(res); } }); }
function GetCheckedValues() { var userIdStr = ""; //alert($("input:checkbox[name='chkUsers']").length);
$("input:checkbox[name='chkUsers']").each(function () { if ($(this).attr("checked")) userIdStr += $(this).val() + ","; }); userIdStr = userIdStr.substring(0, userIdStr.length - 1); return userIdStr; } // function ClickATag() { // alert("You are clicking a A tag"); // } </script></asp:Content>
