DataWindowAttribute Class

.NET Standard 2.x

Specifies the DataWindow object name and presentation style for the model.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Inheritance Constructor

System.Attribute

Syntax

    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
    public class DataWindowAttribute : Attribute

Constructors

Name	Description
DataWindowAttribute(string dataObjectName, DwStyle processing )	Initializes a new instance of the DataWindowAttribute class.

Properties

Name	Return Type	Description
DataObjectName	string	DataWindow object name
Processing	DWNet.Data.DwStyle	DataWindow object presentation style

Remarks

Sets the DataWindow object name and presentation style for the model. Processing will use DwStyle enumeration.

Examples

The following code example demonstrates how to use the DataWindow attribute. DataStore(string dataObject) defines the DataStore by matching the name specified by dataObject with the DataObjectName in DataWindowAttribute of the Model. If a match is found, then the Model will be used.

Model: D_Department

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using SnapObjects.Data;
using DWNet.Data;
using Newtonsoft.Json;

namespace Appeon.ApiDoc.Models
{
    [DataWindow("d_department", DwStyle.Grid)]
    [Table("Department", Schema = "dbo")]
    #region DwSelectAttribute  
    [DwSelect("PBSELECT( VERSION(400) TABLE(NAME=\"Department\" ) @(_COLUMNS_PLACEHOLDER_) )")]
    #endregion
    [UpdateWhereStrategy(UpdateWhereStrategy.KeyAndConcurrencyCheckColumns)]
    [DwKeyModificationStrategy(UpdateSqlStrategy.DeleteThenInsert)]
    [DwTemplate(DataFormat.Xml, "xml_default", "Templates\\xml_setparameter_default.xml", IsDefault = true)]
    public class D_Department
    {
        [Key]
        [DwColumn("Department", "DepartmentID")]
        public int Departmentid { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Department", "Name")]
        public string Name { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Department", "Budget")]
        public decimal Budget { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Department", "StartDate")]
        public DateTime Startdate { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Department", "Administrator")]
        public int? Administrator { get; set; }

    }

}

Example Method:

using System;
using DWNet.Data;

namespace Appeon.ApiDoc.DataWindowAttributeExamples
{
    public class DataWindowAttributeExample
    {
        private readonly SchoolContext _context;

        public DataWindowAttributeExample(SchoolContext dataContext)
        {
            // Sets the data context
            _context = dataContext;
        }

        public void Example()
        {
            // Instantiates a DataStore object with datawindow: d_department.
            var datastore = new DataStore("d_department", _context);

            // Retrieves data from the database for datastore
            datastore.Retrieve();

            Console.WriteLine("After Retrieve, Rowcount: {0}",
                datastore.RowCount);

            /*This code produces the following output:
            
            After Retrieve, Rowcount: 4
            */

        }
    }
}

Example Refer To

DataWindow File: d_department