IGroupMeta.By Property

.NET Standard 2.x

Gets and sets grouping columns.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Syntax

List<IExpressionable<object>> By { get; set; }

Return

System.Collections.List<IExpressionable<object>>

The grouping columns.

Examples

The following code example demonstrates how to use the By property.

using DWNet.Data;
using System;

namespace Appeon.ApiDoc.IGroupMetaExamples
{
    public class ByExample
    {
        private readonly SchoolContext _context;

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

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

            datastore.Retrieve();

            // Gets the properties for the Groups keyword.
            var groupMetas = datastore.DwMeta.Groups;
            Console.WriteLine("Groups Count: {0}", groupMetas.Count);

            foreach (var item in groupMetas)
            {
                foreach (var byItem in item.By)
                {
                    Console.WriteLine("By: {0}", byItem.Expression);
                }
            }

            /*This code produces the following output:
            
            Groups Count: 2
            By: course_departmentid
            By: course_courseid
            */
        }
    }
}

Example Refer To

Model Class: D_Department_Course
DataWindow File: d_department_course

Applies to

.NET Standard

2.x