public static class jqGridExtensions
    {
        public static string jqGrid<T>(this HtmlHelper helper, string gridID, string caption, string url)
        {
            if (gridID.Substring(0, 1) != "#")
                gridID = "#" + gridID;
            string pagerID = string.Format("{0}_pager", gridID);
            StringBuilder sb = new StringBuilder();

sb.AppendLine(" <script type=\"text/javascript\">$(function(){");//jQuery(document).ready(function() {
            sb.AppendLine("$('%%GRIDID%%').jqGrid({".Replace("%%GRIDID%%", gridID));       //jQuery("#list").jqGrid({
            sb.AppendFormat("url:'{0}',", url);                            //        url: '/Home/GridData/',
            sb.Append("datatype: 'json',mtype: 'GET',");                 //        datatype: 'json',mtype: 'GET',
            sb.AppendFormat("colNames:[{0}],", GetColNames<T>());

sb.AppendFormat("colModel:[{0}],", GetColModel<T>());
            sb.Append("pager: '%%GRIDPAGERID%%',rowNum: 20,rowList: [10, 20, 50,100],".Replace("%%GRIDPAGERID%%", pagerID));
            sb.AppendFormat("sortname:'{0}',sortorder: 'desc',", GetSortField<T>());
            sb.Append("viewrecords: true,imgpath: '/themes/redmond/images',");
            sb.AppendFormat("caption: '{0}'", caption);
            sb.Append("});\n$('%%GRIDID%%').jqGrid('navGrid','%%GRIDPAGERID%%',{ edit: false, add: false, del: false });".Replace("%%GRIDID%%", gridID).Replace("%%GRIDPAGERID%%", pagerID));
            sb.Append("});</script>\n");
            sb.AppendFormat("<table id=\"{0}\" class=\"scroll\" cellpadding=\"0\" cellspacing=\"0\"></table>", gridID.Substring(1));
            sb.AppendFormat("<div id=\"{0}\" class=\"scroll\" style=\"text-align:center;\"></div>", pagerID.Substring(1));
            sb.AppendLine();
            return sb.ToString();
        }
}

 private static string GetColModel<T>()
        {
            ModelMetadata metadata = ModelMetadataProviders.Current.GetMetadataForType(null, typeof(T));

StringBuilder sb = new StringBuilder();
            int width=100;
            foreach (ModelMetadata proMeta in metadata.Properties)
            {
                ColWidthAttribute colWidthAttr = GetCustomAttribute<ColWidthAttribute>(proMeta) as ColWidthAttribute;
                if (colWidthAttr != null)
                    width = colWidthAttr.Width;
                sb.Append("{");
                sb.AppendFormat("name:'{0}',index:'{0}',width:{1},align:'left'", proMeta.PropertyName, width);
                sb.Append("},");
            }
            sb.Remove(sb.Length - 1, 1);
            return sb.ToString();
            //return "{ name: 'Id', index: 'Id', width: 140, align: 'left' }, { name: 'Votes', index: 'Votes', width: 180, align: 'left' },{ name: 'Title', index: 'Title', width: 400, align: 'left',editable:true}";
        }

private static object GetCustomAttribute<T>(ModelMetadata proMeta) 
        {
            PropertyInfo property = proMeta.ContainerType.GetProperty(proMeta.PropertyName);
            object[] propertyAttributes = property.GetCustomAttributes(typeof(T), true);
            if (propertyAttributes.Length > 0)
            {
                return (propertyAttributes[0]);

}
            
            return null;
        }

    [DisplayName("ID")]//暂时用这个来表示排序字段
    public class TestModel
    {
        [DisplayName("编号")]
        [ColWidth(Width=100)]
        public int ID{get;set;}

[DisplayName("支持率")]
        [ColWidth(Width = 120)]
        public int Votes { get; set; }

[DisplayName("议题")]
        [ColWidth(Width = 300)]
        public string Title { get; set; }

}

 public ActionResult GridData(string sidx, string sord, int page, int rows)
        {
            var jsonData = new
            {
                total = 1, // we'll implement later 
                page = page,
                records = 3, // implement later 
                rows = new[]{
                      new {id = 1, cell = new[] {"1", "-7", "Is this a good question?"}},
                      new {id = 2, cell = new[] {"2", "15", "Is this a blatant ripoff?"}},
                      new {id = 3, cell = new[] {"3", "23", "Why is the sky blue?"}}
                }
            };
            return Json(jsonData,JsonRequestBehavior.AllowGet);
        }

<%@ Page Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>

<asp:Content ID="aboutTitle" ContentPlaceHolderID="TitleContent" runat="server">
    About Us
</asp:Content>

<asp:Content ID="aboutContent" ContentPlaceHolderID="MainContent" runat="server">
    <h2>About</h2>
    <p>
        Put content here.
    </p>
    <div>
    
    <%=Html.jqGrid<TestModel>(@"#jqT", "Test", "/Home/GridData/")%>
    </div>
</asp:Content>