Drag and drop in ASP.NET CORE Query builder control

14 Jun 202410 minutes to read

The Query Builder provides the functionality to reposition rules or groups within the component effortlessly. This enhancement provides a more intuitive and flexible way to construct and modify queries. You can use AllowDragAndDrop to perform drag and drop functionality. And we have events support for drag and drop features that, indicates the DragStart, Drag and Drop actions.

CSHTML

<ejs-querybuilder id="querybuilder" width="73%" rule="ViewBag.rule" allowDragAndDrop="true">
    <e-querybuilder-columns>
        <e-querybuilder-column field="EmployeeID" label="Employee ID" type="number"></e-querybuilder-column>
        <e-querybuilder-column field="FirstName" label="First Name" type="string"></e-querybuilder-column>
        <e-querybuilder-column field="TitleOfCourtesy" label="Title Of Courtesy" type="boolean" values="ViewBag.values"></e-querybuilder-column>
        <e-querybuilder-column field="Title" label="Title" type="string"></e-querybuilder-column>
        <e-querybuilder-column field="HireDate" label="Hire Date" type="date" format="dd/MM/yyyy"></e-querybuilder-column>
        <e-querybuilder-column field="Country" label="Country" type="string"></e-querybuilder-column>
        <e-querybuilder-column field="City" label="City" type="string"></e-querybuilder-column>
    </e-querybuilder-columns>
</ejs-querybuilder>

<script>
</script>

Default.cs

public ActionResult Index()
    {
          QueryBuilderRule rule = new QueryBuilderRule()
            {
                Condition = "and",
                Rules = new List<QueryBuilderRule>()
                {
                    new QueryBuilderRule { Label="Employee ID", Field="EmployeeID", Type="number", Operator="equal", Value = 1 },
                    new QueryBuilderRule { Label="Title", Field="Title", Type="string", Operator="equal", Value = "Sales Manager" }
                }
            };

            ViewBag.rule = rule;
            ViewBag.dataSource = EmployeeView.GetAllRecords();
            return View();
    }

public class EmployeeView
    {
        public EmployeeView()
        {

        }
        public EmployeeView(int EmployeeID, string FirstName, string LastName, string Title, DateTime BirthDate, DateTime HireDate, int ReportsTo, string Address, string PostalCode, string Phone, string City, string Country)
        {
            this.EmployeeID = EmployeeID;
            this.FirstName = FirstName;
            this.LastName = LastName;
            this.Title = Title;
            this.BirthDate = BirthDate;
            this.HireDate = HireDate;
            this.ReportsTo = ReportsTo;
            this.Address = Address;
            this.PostalCode = PostalCode;
            this.Phone = Phone;
            this.City = City;
            this.Country = Country;

        }
        public int EmployeeID { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Title { get; set; }
        public DateTime BirthDate { get; set; }
        public DateTime HireDate { get; set; }

        public int ReportsTo { get; set; }

        public string Address { get; set; }
        public string PostalCode { get; set; }
        public string Phone { get; set; }
        public string City { get; set; }
        public string Country { get; set; }
        public static List<EmployeeView> GetAllRecords()
        {
            List<EmployeeView> Emp = new List<EmployeeView>();
            Emp.Add(new EmployeeView(1, "Nancy", "Davolio", "Sales Representative", new DateTime(1948, 12, 08), new DateTime(1992, 05, 01), 2, "507 - 20th Ave. E.Apt. 2A ", " 98122", "[phone] ", "Seattle ", "USA"));
            Emp.Add(new EmployeeView(2, "Andrew", "Fuller", "Vice President, Sales", new DateTime(1952, 02, 19), new DateTime(1992, 08, 14), 4, "908 W. Capital Way", "98401 ", "[phone] ", "Kirkland ", "USA"));
            Emp.Add(new EmployeeView(3, "Janet", "Leverling", "Sales Representative", new DateTime(1963, 08, 30), new DateTime(1992, 04, 01), 3, " 4110 Old Redmond Rd.", "98052 ", "[phone]", "Redmond ", "USA "));
            Emp.Add(new EmployeeView(4, "Margaret", "Peacock", "Sales Representative", new DateTime(1937, 09, 19), new DateTime(1993, 05, 03), 6, "14 Garrett Hill ", "SW1 8JR ", "(71) 555-4848 ", "London ", "UK "));
            Emp.Add(new EmployeeView(5, "Steven", "Buchanan", "Sales Manager", new DateTime(1955, 03, 04), new DateTime(1993, 10, 17), 8, "Coventry HouseMiner Rd. ", "EC2 7JR ", " [phone]", "Tacoma ", " USA"));
            Emp.Add(new EmployeeView(6, "Michael", "Suyama", "Sales Representative", new DateTime(1963, 07, 02), new DateTime(1993, 10, 17), 2, " 7 Houndstooth Rd.", " WG2 7LT", "(71) 555-4444 ", "London ", "UK "));
            Emp.Add(new EmployeeView(7, "Robert", "King", "Sales Representative", new DateTime(1960, 05, 29), new DateTime(1994, 01, 02), 7, "Edgeham HollowWinchester Way ", "RG1 9SP ", "(71) 555-5598 ", "London ", " UK"));
            Emp.Add(new EmployeeView(8, "Laura", "Callahan", "Inside Sales Coordinator", new DateTime(1958, 01, 09), new DateTime(1994, 03, 05), 9, "722 Moss Bay Blvd. ", "98033 ", " [phone]", "Seattle ", "USA "));
            Emp.Add(new EmployeeView(9, "Anne", "Dodsworth", "Sales Representative", new DateTime(1966, 01, 27), new DateTime(1994, 11, 15), 5, "4726 - 11th Ave. N.E. ", "98105 ", "(71) 555-5598 ", " London", "UK "));
            return Emp;
        }
    }

Output be like the below.