using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI.WebControls;
using Trirand.Web.Mvc;

namespace MVCDemo.Models
{
    public class OrdersJqGridModel
    {
        public JQGrid OrdersGrid { get; set; }

        public OrdersJqGridModel()
        {
            OrdersGrid = new JQGrid
            {
                Columns = new List<JQGridColumn>()
                {
                    new JQGridColumn 
                    {
                        // Always set PrimaryKey for Add,Edit,Delete operations
                        // If not set, the first column will be assumed as primary key
                        DataField = "OrderID",                                        
                        PrimaryKey = true,
                        Editable = false,
                        Width = 50,
                        DataType = typeof(int)
                    },                                    
                    new JQGridColumn 
                    { 
                        DataField = "CustomerID", 
                        Editable = true,
                        Width = 100,
                        DataType = typeof(string),
                        ShowColumnMenu = true,
                    },
                    new JQGridColumn 
                    { 
                        DataField = "OrderDate",                                                         
                        Editable = true,
                        Width = 100, 
                        DataFormatString = "{0:yyyy/MM/dd}",
                        DataType = typeof(DateTime),
                        ShowColumnMenu = true,
                    },
                    new JQGridColumn
                    { 
                        DataField = "Freight", 
                        Editable = true,
                        Width = 75,
                        DataType = typeof(double),
                        ShowColumnMenu = true
                    },
                    new JQGridColumn 
                    { 
                        DataField = "ShipName",
                        Editable =  true,
                        Width = 150,
                        DataType = typeof(string)
                    }
                },
                
                Width = Unit.Pixel(640),
                Height = Unit.Pixel(250),
                
                ToolBarSettings = new ToolBarSettings
                {
                    ShowRefreshButton = true
                }
            };  
        }        
    }
}
@model MVCDemo.Models.OrdersJqGridModel
@using Trirand.Web.Mvc
@using MVCDemo.Models

<!DOCTYPE html>
<html lang="en-us">
<head>
    <meta charset="utf-8">
    <title>jqGrid for ASP.NET MVC - Prefiltered grid</title>
    <!-- jQuery runtime minified -->
    <script src="~/Scripts/jquery-3.2.1.min.js" type="text/javascript"></script>
    <!-- The jqGrid localization file we need, English in this case -->
    <script type="text/javascript" src="~/Scripts/trirand/i18n/grid.locale-en.js"></script>
    <!-- The jqGrid client-side javascript -->
    <script type="text/javascript" src="~/Scripts/trirand/jquery.jqGrid.min.js"></script>
    <!-- Referece to the javascript client-side code of the jqDatePicker -->
    <script type="text/javascript" src="~/Scripts/trirand/jquery.jqDatePicker.min.js"></script>
    <!-- Referece to the javascript client-side code of jqAutoComplete  -->
    <script type="text/javascript" src="~/Scripts/trirand/jquery.jqAutoComplete.min.js"></script>

    <!-- The jQuery UI theme that will be used by the grid. -->
    <link rel="stylesheet" type="text/css" href="http://code.jquery.com/ui/1.12.1/themes/redmond/jquery-ui.css" />
    <!-- The jQuery UI theme extension jqGrid needs -->
    <link rel="stylesheet" type="text/css" href="~/Content/themes/ui.jqgrid.css" />

    <style>
        /*the size of the datepicker items*/
        #ui-datepicker-div {
            font-size: 12px;
        }
        /*the size of the autocomplete seach menu for Shipname*/
        .ui-menu-item {
            font-size: 12px;
            text-wrap: none;
        }
        /*the image that will be shown in the autocomplete input box while performing the search*/
        .ui-autocomplete-loading {
            background: white url("/content/images/loading.gif") right center no-repeat;
        }
    </style>
</head>

<body>

    <style type="text/css">
        #ui-datepicker-div {
            font-size: 12px;
        }

        .ui-menu-item {
            font-size: 12px;
        }
    </style>

    <div>

        <script type="text/javascript">   
            
            var initialSearch = true;

            function initGrid() {

                if (initialSearch) {
                    $("#Grid").setGridParam({
                        postData: {
                            CustomerID: "HANAR",
                            _search: true
                        }
                    });

                    window.setTimeout(function () { $("#gs_CustomerID").val("HANAR").change(); }, 100);
                    

                    initialSearch = false;
                }

            }

        </script>

        @Html.Trirand().JQGrid(Model.OrdersGrid, "Grid")


        <!-- this JQDatePicker will be used internally by the grid as DatePicker control for searching and editing -->
        <!-- Datepickers can be used standalone too - when you set the DisplayMode to Standalone (it's the default) -->
        @(Html.Trirand().JQDatePicker(
            new JQDatePicker
                {
                    DisplayMode = DatePickerDisplayMode.ControlEditor,
                    DateFormat = "yyyy/mm/dd",
                    MinDate = new DateTime(1995, 1, 1),
                    MaxDate = new DateTime(2012, 12, 21)
                }, "DatePicker")
        )


        <!-- this JQAutoComplete control will be used internally by the grid as DatePicker control for searching and editing -->
        <!-- AutoCompleters b can be used standalone too - when you set the DisplayMode to Standalone (it's the default) -->
        @(Html.Trirand().JQAutoComplete(
            new JQAutoComplete
                {
                    DisplayMode = AutoCompleteDisplayMode.ControlEditor,
                    DataUrl = Url.Action("AutoCompleteShipName_SearchPreFiltered", "grid")
                }, "AutoComplete")
        )

    </div>

    <br />
    <br />

    <div>
        
    </div>

</body>
</html>
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using System.Web.Script.Serialization;
using MVCDemo.Models;
using Trirand.Web.Mvc;


namespace MVCDemo.Controllers.Grid
{
    public partial class GridController : Controller
    {
        // This is the default action for the View. Use it to setup your grid Model.
        public ActionResult SearchPreFiltered()
        {
            //Session["initialSearch"] = true;
            
            // Get the model (setup) of the grid defined in the /Models folder.
            var gridModel = new OrdersJqGridModel();            
            var ordersGrid = gridModel.OrdersGrid;
            
            // Setting the DataUrl to an action (method) in the controller is required.
            // This action will return the data needed by the grid
            ordersGrid.DataUrl = Url.Action("SearchPreFilteredDataRequested");            

            // customize the default Orders grid model with custom settings
            // NOTE: you need to call this method in the action that fetches the data as well,
            // so that the models match
            SetUpGrid_SearchPreFiltered(ordersGrid);
           
            // Pass the custmomized grid model to the View
            return View(gridModel);
        }        

        // This method is called when the grid requests data        
        public JsonResult SearchPreFilteredDataRequested()
        {
            // Get both the grid Model and the data Model
            // The data model in our case is an autogenerated linq2sql database based on Northwind.
            var gridModel = new OrdersJqGridModel();
            var northWindModel = new NorthwindDataContext();            

            // customize the default Orders grid model with our custom settings
            SetUpGrid_SearchPreFiltered(gridModel.OrdersGrid);

            //JQGridState gridState = gridModel.OrdersGrid.GetState();
            //Session["gridState"] = gridState;
            // return the result of the DataBind method, passing the datasource as a parameter
            // jqGrid for ASP.NET MVC automatically takes care of paging, sorting, filtering/searching, etc

            //Session["initialSearch"] = false;
            
            return gridModel.OrdersGrid.DataBind(northWindModel.Orders);
        }

        public JsonResult AutoCompleteShipName_SearchPreFiltered(string term)
        {
            var northWindModel = new NorthwindDataContext();
            JQAutoComplete autoComplete = new JQAutoComplete();

            autoComplete.DataField = "ShipName";
            autoComplete.AutoCompleteMode = AutoCompleteMode.BeginsWith;
            autoComplete.DataSource = from o in northWindModel.Orders
                                      select o;
            return autoComplete.DataBind();
        }

        private void SetUpGrid_SearchPreFiltered(JQGrid ordersGrid)
        {            
            // show the search toolbar
            ordersGrid.ToolBarSettings.ShowSearchToolBar = true;
            ordersGrid.ToolBarSettings.ShowSearchButton = true;            

            var orderDateColumn = ordersGrid.Columns.Find(c => c.DataField == "OrderDate");
            orderDateColumn.DataFormatString = "{0:yyyy/MM/dd}";
            orderDateColumn.SearchType = SearchType.DatePicker;
            orderDateColumn.DataType = typeof(DateTime);
            orderDateColumn.SearchControlID = "DatePicker";
            orderDateColumn.SearchToolBarOperation = SearchOperation.IsEqualTo;

            var shipNameColumn = ordersGrid.Columns.Find(c => c.DataField == "ShipName");
            shipNameColumn.SearchType = SearchType.AutoComplete;
            shipNameColumn.DataType = typeof(string);
            shipNameColumn.SearchControlID = "AutoComplete";
            shipNameColumn.SearchToolBarOperation = SearchOperation.Contains;
            shipNameColumn.ClearSearch = false;

            var orderIDColumns = ordersGrid.Columns.Find(c => c.DataField == "OrderID");
            orderIDColumns.Searchable = true;
            orderIDColumns.DataType = typeof(int);
            orderIDColumns.SearchToolBarOperation = SearchOperation.IsEqualTo;

            SetUpCustomerIDSearchDropDown_SearchPreFiltered(ordersGrid);
            SetUpFreightSearchDropDown_SearchPreFiltered(ordersGrid);


            ordersGrid.ClientSideEvents.BeforeSearch = "beforeGridSearch";
            ordersGrid.ClientSideEvents.AfterSearch = "afterGridSearch";
            //ordersGrid.ClientSideEvents.GridInitialized = "initGrid";
            ordersGrid.ClientSideEvents.BeforeAjaxRequest = "initGrid";

            //if ((bool) Session["initialSearch"] == true)
            //{
            //    // Set PostData to pre-filter the grid to initial state with CustomerID = "HANAR"
            //    JsonFilters preFilters = new JsonFilters();
            //    preFilters.groupOp = "AND";
            //    preFilters.rules = new JsonFilterRule[1];

            //    JsonFilterRule rule = new JsonFilterRule { field = "CustomerID", op = "eq", data = "HANAR" };
            //    preFilters.rules[0] = rule;

            //    string serializedFilters = new JavaScriptSerializer().Serialize(preFilters);

            //    Hashtable filters = new Hashtable();
            //    filters.Add("filters", serializedFilters);

            //    ordersGrid.PostData = new JavaScriptSerializer().Serialize(filters);
            //}
        }

        private void SetUpCustomerIDSearchDropDown_SearchPreFiltered(JQGrid ordersGrid)
        {
            // setup the grid search criteria for the columns
            JQGridColumn customersColumn = ordersGrid.Columns.Find(c => c.DataField == "CustomerID");
            customersColumn.Searchable = true;

            // DataType must be set in order to use searching
            customersColumn.DataType = typeof(string);
            customersColumn.SearchToolBarOperation = SearchOperation.IsEqualTo;
            customersColumn.SearchType = SearchType.DropDown;

            // Populate the search dropdown only on initial request, in order to optimize performance
            if (ordersGrid.AjaxCallBackMode == AjaxCallBackMode.RequestData)
            {
                var northWindModel = new NorthwindDataContext();
                var searchList = from customers in northWindModel.Customers
                                 select new SelectListItem
                                 {
                                     Text = customers.CustomerID,
                                     Value = customers.CustomerID
                                 };

                customersColumn.SearchList = searchList.ToList<SelectListItem>();
                customersColumn.SearchList.Insert(0, new SelectListItem { Text = "All", Value = "" });
            }            
        }

        private void SetUpFreightSearchDropDown_SearchPreFiltered(JQGrid ordersGrid)
        {            
            // setup the grid search criteria for the columns
            JQGridColumn freightColumn = ordersGrid.Columns.Find(c => c.DataField == "Freight");
            freightColumn.Searchable = true;

            // DataType must be set in order to use searching
            freightColumn.DataType = typeof(decimal);
            freightColumn.SearchToolBarOperation = SearchOperation.IsGreaterOrEqualTo;
            freightColumn.SearchType = SearchType.DropDown;

            // Populate the search dropdown only on initial request, in order to optimize performance
            if (ordersGrid.AjaxCallBackMode == AjaxCallBackMode.RequestData)
            {
                List<SelectListItem> searchList = new List<SelectListItem>();
                searchList.Add(new SelectListItem { Text = "> 10", Value = "10" });
                searchList.Add(new SelectListItem { Text = "> 30", Value = "30" });
                searchList.Add(new SelectListItem { Text = "> 50", Value = "50" });
                searchList.Add(new SelectListItem { Text = "> 100", Value = "100" });

                freightColumn.SearchList = searchList.ToList<SelectListItem>();
                freightColumn.SearchList.Insert(0, new SelectListItem { Text = "All", Value = "" });
            }
        }       
    }

    public class JsonFilters
    {
        public string groupOp { get; set; }
        public JsonFilterRule [] rules { get; set;}
    }

    public class JsonFilterRule
    {
        public string field { get; set; }
        public string op { get; set; }
        public string data { get; set; }
    }
}

Switch theme:


Theming is based on the very popular jQuery ThemeRoller standard. This is the same theming mechanism used by jQuery UI and is now a de-facto standard for jQuery based components. The benefits of using ThemeRoller are huge. We can offer a big set of ready to use themes created by professional designers, including Windows-like themes (Redmond), Apple-like theme (Cupertino), etc. In addition to that any jQuery UI controls on the same page will pick the same theme.

Last, but not least, you can always roll your own ThemeRoller theme, using the superb Theme Editor

To use a theme, simply reference 2 Css files in your Html <head> section - the ThemeRoller theme you wish to use, and the jqGrid own ThemeRoller Css file. For example (Redmond theme):

<link rel="stylesheet" type="text/css" media="screen" href="/themes/redmond/jquery-ui-1.8.2.custom.css" />
<link rel="stylesheet" type="text/css" media="screen" href="/themes/ui.jqgrid.css" />