IComputeMeta.Expression Property

.NET Standard 2.x

Gets or sets the expression for a computed field control.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Syntax

IExpressionable<object> Expression { get; set; }

Return

DWNet.Data.IExpressionable<object>

The expression for a computed field control.

Examples

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

using DWNet.Data;
using System;

namespace Appeon.ApiDoc.IComputeMetaExamples
{
    public class ExpressionExample
    {
        private readonly SchoolContext _context;

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

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

            datastore.Retrieve();
			
			// Gets the properties of the Computes.
            var computeMetas = datastore.DwMeta.Computes;
            Console.WriteLine("Computes Count: {0}", computeMetas.Count);

            foreach (var item in computeMetas)
            {
                Console.WriteLine("Column Name: {0}; Expression: {1}",
                    item.Name, item.Expression.Expression);
            }

            /*This code produces the following output:
            
            Computes Count: 1
            Column Name: Compute_Fullname; Expression: firstname + \" \" + lastname
            */
        }
    }
}

Example Refer To

Model Class: D_Person_With_Dwcompute
DataWindow File: d_person_with_dwcompute

Applies to

.NET Standard

2.x