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Data Grid - Handling Remote Features Manually

Order ID	Order Date	Ship Name	Ship Address	Total Items	Total Price

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This sample demonstrates how to handle remote features manually without relying on the IgniteUI MVC wrappers.
The remote features are handled on the server side in the GridRemoteData Action in the Controller.
When a specific action is applied to the grid (paging, filtering or sorting) a remote request will be send to the server with additional information stored in the Query String. On the server side, the feature specific parameters are extracted from the Query String and the related data operations are applied to the data. Once the data is fully proccessed the result is returned in JSON format to the client.

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ASP.NET View
ASP.NET Controller

<!DOCTYPE html>

<html>
<head>
	<title></title>

	<!-- Ignite UI for jQuery Required Combined CSS Files -->
	<link href="http://cdn-na.infragistics.com/igniteui/2024.2/latest/css/themes/infragistics/infragistics.theme.css" rel="stylesheet" />
	<link href="http://cdn-na.infragistics.com/igniteui/2024.2/latest/css/structure/infragistics.css" rel="stylesheet" />

	<script src="http://ajax.aspnetcdn.com/ajax/modernizr/modernizr-2.8.3.js"></script>
	<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
	<script src="http://code.jquery.com/ui/1.11.1/jquery-ui.min.js"></script>

	<!-- Ignite UI for jQuery Required Combined JavaScript Files -->
	<script src="http://cdn-na.infragistics.com/igniteui/2024.2/latest/js/infragistics.core.js"></script>
	<script src="http://cdn-na.infragistics.com/igniteui/2024.2/latest/js/infragistics.lob.js"></script>
</head>
<body>
	<script>
		$(function () {
			$("#grid").igGrid({
				autogenerateColumns: false,
				responseDataKey: "Records",
				height: 500,
				width: "100%",
				dataSource: "@(Url.Action("GridRemoteData"))",
				columns: [{
					key: 'OrderID',
					dataType: 'number',
					headerText: 'Order ID',
					width: '10%'
				}, {
					key: 'OrderDate',
					dataType: 'date',
					headerText: 'Order Date',
					width: '15%'
				}, {
					key: 'ShipName',
					dataType: 'string',
					headerText: 'Ship Name',
					width: '20%'
				}, {
					key: 'ShipAddress',
					dataType: 'string',
					headerText: 'Ship Address',
					width: '25%'
				}, {
					key: 'TotalItems',
					dataType: 'number',
					headerText: 'Total Items',
					width: '10%'
				}, {
					key: 'TotalPrice',
					dataType: 'number',
					headerText: 'Total Price',
					width: '15%'
				}],
				features: [
					{ name: "Paging", type: "remote", recordCountKey: "TotalRecordsCount" },
					{
						name: "Sorting", type: "remote",
						sortUrlKey: 'sort',
						sortUrlKeyAscValue: 'asc',
						sortUrlKeyDescValue: 'desc'
					},
					{ name: "Filtering", type: "remote", filterExprUrlKey: "filter" }
				]
			});
		});
	</script>
	<table id="grid"></table>
</body>
</html>

using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Web.Mvc;
using System.Linq;
using Infragistics.Web.Mvc;
using IgniteUI.SamplesBrowser.Models.Repositories;
using IgniteUI.SamplesBrowser.Application.Data;
using IgniteUI.SamplesBrowser.Models.Northwind;
using System.Collections.Generic;
using System;
using System.Collections.Specialized;
using System.Text.RegularExpressions;
using System.Web;
using LinqToTwitter;
using System.Reflection;
using System.Linq.Expressions;
using System.Text;


namespace IgniteUI.SamplesBrowser.Controllers
{

	public class GridController : Controller
	{
		private DataTable GetCustomers
		{
			get
			{
				if (Session["Customers"] == null)
				{
					Session["Customers"] = GetCustomerDataTable();
				}
				return (DataTable)Session["Customers"];
			}
		}

		[GridDataSourceAction]
		[ActionName("datatable-binding")]
		public ActionResult BasicMvcHelper()
		{
			DataTable customers = this.GetCustomers;
			NameValueCollection queryString = HttpUtility.ParseQueryString(Request.QueryString.ToString());
			// check the query string for sorting expressions
			List<SortExpression> sortExpressions = BuildSortExpressions(queryString, "sort", true);
			DataView dv = customers.DefaultView;
			if (sortExpressions.Count > 0)
			{
				String sortExpression = "";
				foreach (SortExpression expr in sortExpressions)
				{
					sortExpression += expr.Key + " " + (expr.Mode == SortMode.Ascending ? "asc" : "desc") + ",";
				}
				dv.Sort = sortExpression.Substring(0, sortExpression.Length - 1);
			}
			return View("datatable-binding", dv.ToTable());
		}

		public List<SortExpression> BuildSortExpressions(NameValueCollection queryString, string sortKey, bool isTable)
		{
			List<SortExpression> expressions = new List<SortExpression>();
			List<string> sortKeys = new List<string>();
			foreach (string key in queryString.Keys)
			{
				if (!string.IsNullOrEmpty(key) && key.StartsWith(sortKey))
				{
					SortExpression e = new SortExpression();
					e.Key = key.Substring(key.IndexOf("(")).Replace("(", "").Replace(")", "").Split(':')[0];
					e.Logic = "AND";
					e.Mode = queryString[key].ToLower().StartsWith("asc") ? SortMode.Ascending : SortMode.Descending;
					expressions.Add(e);
					sortKeys.Add(key);
				}
			}
			if (sortKeys.Count > 0 && isTable)
			{
				foreach (string sortedKey in sortKeys)
				{
					queryString.Remove(sortedKey);
				}
				string url = Request.Url.AbsolutePath;
				string updatedQueryString = "?" + queryString.ToString();
				Response.Redirect(url + updatedQueryString);
			}
			return expressions;
		}

		[ActionName("aspnet-mvc-helper")]
		public ActionResult AspnetMvcHelper()
		{
			return View("aspnet-mvc-helper");
		}

        [ActionName("sorting-remote")]
        public ActionResult SortingRemote()
        {
            return View("sorting-remote");
        }

        [ActionName("summaries-remote")]
		public ActionResult SummariesRemote()
		{
			return View("summaries-remote");
		}

		[ActionName("bind-web-api")]
		public ActionResult BindToWebAPI()
		{
			return View("bind-web-api");
		}

		[ActionName("basic-editing")]
		public ActionResult BasicEditing()
		{
			ViewBag.Customers = RepositoryFactory.GetCustomerRepository().Get().AsQueryable();
			return View("basic-editing");
		}

        [ActionName("manual-remote-features-handling")]
        public ActionResult GridRemoteFeaturesHandling()
        {
            return View("manual-remote-features-handling");
        }

        public JsonResult GridRemoteData()
        {
            IEnumerable<Order> customers = RepositoryFactory.GetOrderRepository().Get().Take(200);

            IQueryable data = customers.AsQueryable();

            //apply filtering
            var filterExprs = Request.QueryString.AllKeys.Where(x => x.Contains("filter"));
            if (filterExprs.Count() != 0)
            {
                data = ApplyFilterExpr(Request.QueryString, customers.AsQueryable());
            }

            //apply sorting
            var sortExprs = Request.QueryString.AllKeys.Where(x => x.Contains("sort"));
            if (sortExprs.Count() != 0)
            {
                data = ApplySorting(Request.QueryString, data);
            }


            int totalCount = data.Count();

            //apply paging 
            if (Request.QueryString["$top"] != null && Request.QueryString["$skip"] != null)
            {
                data = ApplyPaging(Request.QueryString, data);
            }

            JsonResult result = new JsonResult();
            result.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
            result.Data = new { Records = data, TotalRecordsCount = totalCount };
            return result;
        }

        [ActionName("rest-editing")]
        public ActionResult RestEditing()
        {
            return View("rest-editing");
        }

        //[ActionName("grid-performance")]
        //public ActionResult GridPerformance()
        //{
        //    return View("grid-performance");
        //}


        public LargeJsonResult GridPerformance()
        {
            bool dataBind = bool.Parse(Request.QueryString["databind"]);
            int rowsCount = int.Parse(Request.QueryString["rowsCount"]);
            int colsCount = int.Parse(Request.QueryString["colsCount"]);
            int pageSize, pageIndex;
            var persons = RepositoryFactory.GetPersonsRepository(dataBind, rowsCount, colsCount).Get();
            bool res;

            res = int.TryParse(Request.QueryString["pageSize"], out pageSize);
            if (!res)
            {
                pageSize = -1;
                res = false;
            }

            res = int.TryParse(Request.QueryString["pageIndex"], out pageIndex);
            if (!res)
            {
                pageIndex = -1;
                res = false;
            }

            IQueryable data = persons.AsQueryable();

            //apply filtering
            var filterExprs = Request.QueryString.AllKeys.Where(x => x.Contains("filter"));
            if (filterExprs.Count() != 0)
            {
                data = ApplyFilterExpr(Request.QueryString, persons.AsQueryable());
            }

            int totalCount = data.Count();

            //apply paging 
            if (pageSize > -1 && pageIndex > -1)
            {
                data = data.Skip(pageIndex * pageSize).Take(pageSize); ;
            }

            LargeJsonResult result = new LargeJsonResult();
            result.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
            result.Data = new { Records = data, TotalRecordsCount = totalCount };
            return result;
        }

		private IQueryable ApplyPaging(NameValueCollection queryString, IQueryable data)
		{
			int recCount = Convert.ToInt32(queryString["$top"]);
			int startIndex = Convert.ToInt32(queryString["$skip"]);

			data = data.Skip(startIndex).Take(recCount);
			return data;
		}

		private IQueryable ApplySorting(NameValueCollection queryString, IQueryable data)
		{
			List<SortExpression> sortExpressions = BuildSortExpressions(queryString, "sort", false);

			string orderBy = "OrderBy";
			string orderByDescending = "OrderByDescending";
			foreach (SortExpression expr in sortExpressions)
			{

				data = ApplyOrder(data, expr.Key, expr.Mode == SortMode.Ascending ? orderBy : orderByDescending);
				orderBy = "ThenBy";
				orderByDescending = "ThenByDescending";
			}
			return data;
			
		}

		public static IQueryable ApplyOrder(IQueryable source, string property, string methodName)
		{
			string[] props = property.Split('.');
			Type type = source.ElementType;
			ParameterExpression arg = Expression.Parameter(type, "x");
			Expression expr = arg;
			foreach (string prop in props)
			{
                var propName = prop.Split(':')[0];
				PropertyInfo pi = type.GetProperty(propName);
				expr = Expression.Property(expr, pi);
				type = pi.PropertyType;
			}
			Type delegateType = typeof(Func<,>).MakeGenericType(source.ElementType, type);
			LambdaExpression lambda = Expression.Lambda(delegateType, expr, arg);

			object result = typeof(Queryable).GetMethods().Single(
					method => method.Name == methodName
							&& method.IsGenericMethodDefinition
							&& method.GetGenericArguments().Length == 2
							&& method.GetParameters().Length == 2)
					.MakeGenericMethod(source.ElementType, type)
					.Invoke(null, new object[] { source, lambda });
			return (IQueryable)result;
		}

		private IQueryable ApplyFilterExpr(NameValueCollection queryString, IQueryable customers)
		{
			List<FilterExpression> exprs = GetFilterExpressions(queryString);
			StringBuilder builder = new StringBuilder();
			int count = 0;

			for (int i = 0; i < exprs.Count; i++)
			{
				if (count != 0 && count <= exprs.Count - 1)
				{
					builder.Append(exprs[i].Logic.ToLower() == "AND".ToLower() ? " AND " : " OR ");
				}
				count++;

				string condition = exprs[i].Condition;
				string expr = exprs[i].Expr;
				string colKey = exprs[i].Key;
				var dt = DateTime.Now;
				
				switch (condition.ToLower())
				{
					case "startswith":
						 builder.Append(colKey + ".StartsWith(\"" + expr + "\")");
						break;
					case "contains":
						 builder.Append(colKey + ".Contains(\"" + expr + "\")");
						break;
					case "endswith":
						 builder.Append(colKey + ".EndsWith(\"" + expr + "\")");
						break;
					case "equals":
						if (colKey == "ShipName") {
							//col type is string
							builder.Append(colKey + " == \"" + expr + "\"");
						}
						else
						{
							//col type is number
							builder.Append(colKey + " == " + expr);
						}
						
						break;
					case "doesnotequal":
						if (colKey == "ShipName")
						{
							//col type is string
							builder.Append(colKey + " != \"" + expr + "\"");
						}
						else
						{
							//col type is number
							builder.Append(colKey + " != " + expr);
						}
						break;
					case "doesnotcontain":
						 builder.Append("! " + colKey + ".Contains(\"" + expr + "\")");
						break;
					case "lessthan":
						 builder.Append(colKey + " < " + expr);
						break;
					case "greaterthan":
						 builder.Append(colKey + " > " + expr);
						break;
					case "lessthanorequalto":
						 builder.Append(colKey + " <= " + expr);
						break;
					case "greaterthanorequalto":
						 builder.Append(colKey + " >= " + expr);
						break;
					case "on":
						dt = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(double.Parse(expr)).ToUniversalTime();
						 builder.Append("(" + colKey + ".Value.Day == " + dt.Day + " AND " + colKey +
							".Value.Year == " + dt.Year + " AND " +colKey + ".Value.Month == " + dt.Month + ")");
						break;
					case "noton":
						dt = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(double.Parse(expr)).ToUniversalTime();
						 builder.Append("!("+colKey + ".Value.Day == " + dt.Day + " AND " + colKey +
							".Value.Year == " + dt.Year + " AND " + colKey + ".Value.Month == " + dt.Month + ")");
						break;
					case "after":
						dt = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(double.Parse(expr)).ToUniversalTime();
						 builder.Append("((" + colKey + ".Value.Year > " + dt.Year + " OR (" +
							colKey + ".Value.Month > " + dt.Month + " AND " + colKey + ".Value.Year == " + dt.Year + ") OR (" +
							colKey + ".Value.Day > " + dt.Day + " AND " + colKey + ".Value.Year == " + dt.Year + " AND " +
							colKey + ".Value.Month == " + dt.Month + ")))");
						break;
					case "before":
						dt = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc).AddMilliseconds(double.Parse(expr)).ToUniversalTime();
						builder.Append("((" + colKey + ".Value.Year < " + dt.Year + " OR (" +
									   colKey + ".Value.Month < " + dt.Month + " AND " + colKey + ".Value.Year == " + dt.Year + ") OR (" +
									   colKey + ".Value.Day < " + dt.Day + " AND " + colKey + ".Value.Year == " + dt.Year + " AND " +
									   colKey + ".Value.Month == " + dt.Month + ")))");
						break;
					case "today":
						builder.Append("(" + colKey + ".Value.Day == " + DateTime.Now.Day + " AND " + colKey +
						 ".Value.Year == " + DateTime.Now.Year + " AND " + colKey + ".Value.Month == " + DateTime.Now.Month + ")");
						break;
					case "yesterday":
						DateTime yesterday = DateTime.Now.AddDays(-1);
						builder.Append("(" + colKey + ".Value.Day == " + yesterday.Day + " AND " + colKey +
						 ".Value.Year == " + yesterday.Year + " AND " + colKey + ".Value.Month == " + yesterday.Month + ")");
						break;
					case "thismonth":
						builder.Append("(" + colKey + ".Value.Year == " + DateTime.Now.Year + " AND " + colKey + ".Value.Month == " + DateTime.Now.Month + ")");
						break;
					case "lastmonth":
						builder.Append("(" + colKey + ".Value.Year == " + (DateTime.Now.Year - 1) + " AND " + colKey + ".Value.Month == " + (DateTime.Now.Month - 1) + ")");
						break;
					case "nextmonth":
						builder.Append("(" + colKey + ".Value.Year == " + (DateTime.Now.Year - 1) + " AND " + colKey + ".Value.Month == " + (DateTime.Now.Month + 1) + ")");
						break;
					case "thisyear":
						builder.Append(colKey + ".Value.Year == " + DateTime.Now.Year);
						break;
					case "lastyear":
						builder.Append(colKey + ".Value.Year == " + (DateTime.Now.Year - 1));
						break;
					case "nextyear":
						builder.Append(colKey + ".Value.Year == " + (DateTime.Now.Year + 1));
						break;
					default:
						break;
				}
			}
			if (builder.Length > 0) {
				customers = customers.Where(builder.ToString(), new object[0]);
			}
		
			return customers;
		}

		internal List<FilterExpression> GetFilterExpressions(NameValueCollection queryString)
		{
			List<FilterExpression> expressions = new List<FilterExpression>();
			// check the query string for sorting expressions
			foreach (string key in queryString.Keys)
			{
				if (!string.IsNullOrEmpty(key) && key.StartsWith("filter("))
				{
					string val = key.Substring(key.IndexOf("(")).Replace("(", "").Replace(")", "");
                    string columnKey = val.Substring(0, val.IndexOf(":"));
					string logic = "AND";

					if (queryString["filter"] != null && (queryString["filter"].ToLower() == "and" || queryString["filter"].ToLower() == "or"))
					{
						logic = queryString["filter"];
					}

					Regex filtersRegex = new Regex(@"[a-z]+\(.*?\)", RegexOptions.IgnoreCase);
					MatchCollection m = filtersRegex.Matches(queryString[key]);
					string[] filters = new string[m.Count];
					int i = 0;
					foreach (Match capture in m)
					{
						filters[i] = capture.Value;
						i++;
					}

					// Handle multiple filters for the same column 
					for (i = 0; i < filters.Length; i++)
					{
						FilterExpression e = new FilterExpression();
						e.Logic = logic;
						e.Key = columnKey;
						e.Condition = filters[i].Substring(0, filters[i].IndexOf("("));
						if ((filters[i].StartsWith("contains()") || filters[i].StartsWith("equals()") || filters[i].StartsWith("startsWith()")
								|| filters[i].StartsWith("endsWith()") || filters[i].StartsWith("doesNotContain()") || filters[i].StartsWith("doesNotEqual()")
							)
							&& (e.Condition != "null" && e.Condition != "notNull" && e.Condition != "empty" && e.Condition != "notEmpty")
							&& (e.Condition != "today" && e.Condition != "yesterday" && e.Condition != "thisMonth" && e.Condition != "nextMonth"
							&& e.Condition != "lastMonth" && e.Condition != "thisYear" && e.Condition != "nextYear" && e.Condition != "lastYear")
							)
						{
							continue;
						}
						else
						{
							string tmp = filters[i].Substring(filters[i].IndexOf("("));
							e.Expr = filters[i].Substring(filters[i].IndexOf("(")).Replace("(", "").Replace(")", "");
						}
						expressions.Add(e);
					}
				}
			}

			return expressions;
		}




		

		public ActionResult OrdersSaveData()
		{
			GridModel gridModel = new GridModel();
			List<Transaction<Order>> transactions = gridModel.LoadTransactions<Order>(HttpContext.Request.Form["ig_transactions"]);
			var orders = RepositoryFactory.GetOrderRepository();
			foreach (Transaction<Order> t in transactions)
			{
				if (t.type == "newrow")
				{
					orders.Add(t.row);
				}
				else if (t.type == "deleterow")
				{
					orders.Delete(o => o.OrderID == Int32.Parse(t.rowId));
				}
				else if (t.type == "row")
				{
					var order = (from o in orders.Get()
								 where o.OrderID == Int32.Parse(t.rowId)
								 select o).Single();
					if (t.row.OrderDate != null)
					{
						order.OrderDate = t.row.OrderDate;
					}
					order.TotalPrice = t.row.TotalPrice;
					order.TotalItems = t.row.TotalItems;
					if (t.row.CustomerID != null)
					{
						order.CustomerID = t.row.CustomerID;
					}
					if (t.row.ShipAddress != null)
					{
						order.ShipAddress = t.row.ShipAddress;
					}
					orders.Update(order, o => o.OrderID == Int32.Parse(t.rowId));
				}
			}
			orders.Save();
			JsonResult result = new JsonResult();
			Dictionary<string, bool> response = new Dictionary<string, bool>();
			response.Add("Success", true);
			result.Data = response;
			return result;
		}

		[GridDataSourceAction]
		public ActionResult ChainingGetData()
		{
			var employees = RepositoryFactory.GetEmployeeRepository().Get();
			return View(employees);
		}

		[GridDataSourceAction]
		public ActionResult GetTweets()
		{
			var auth = new SingleUserAuthorizer
			{
				Credentials = new SingleUserInMemoryCredentials
				{
					ConsumerKey = ConfigurationManager.AppSettings["consumerKey"],
					ConsumerSecret = ConfigurationManager.AppSettings["consumerSecret"],
					TwitterAccessToken = ConfigurationManager.AppSettings["accessToken"],
					TwitterAccessTokenSecret = ConfigurationManager.AppSettings["accessTokenSecret"]
				}
			};
			var twitterCtx = new TwitterContext(auth);

			var userStatusResponse =
			   (from tweet in twitterCtx.Status
				where tweet.Type == StatusType.User &&
					  tweet.ScreenName == "Infragistics" &&
					  tweet.Count == 100
				select tweet);

			var data = userStatusResponse.ToArray();

			return View(data.AsQueryable()); ;
		}


		[GridDataSourceAction]
		public ActionResult GetEmployees()
		{
			var employees = RepositoryFactory.GetEmployeeRepository().Get();
			return View(employees);
		}

		[GridDataSourceAction]
		public ActionResult GetProducts()
		{
			var products = RepositoryFactory.GetProductRepository().Get();
			return View(products);
		}



		[GridDataSourceAction]
		public ActionResult GetCategories()
		{
			var categories = RepositoryFactory.GetCategoryRepository().Get();
			return View(categories);
		}

		[GridDataSourceAction]
		public ActionResult GetOrders()
		{
			var orders = RepositoryFactory.GetOrderRepository().Get().OrderBy(o => o.OrderID).Take(50).AsQueryable();
			return View(orders);
		}

		private DataTable GetCustomerDataTable()
		{
			NorthwindContext ctx = new NorthwindContext();
			SqlConnection conn = (SqlConnection)ctx.Database.Connection;
			DataTable dt = new DataTable();
			using (SqlConnection con = conn)
			{
				using (SqlDataAdapter adapter = new SqlDataAdapter("SELECT * FROM CUSTOMERS", con))
				{
					adapter.Fill(dt);
				}
			}
			return dt;
		}
	}
}

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Data Grid - Handling Remote Features Manually

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