IDataStore.LastOrDefault<TModel>() Method

.NET Standard 2.x

Generic method. Returns the last data row of the DataStore. If no data row is found, returns null.

Namespace: DWNet.Data

Assembly: DWNet.Data.dll

Syntax

  public TModel LastOrDefault<TModel>();

Type Parameters

TModel

The type of a model class that matches with the current DataObject.

Returns

TModel

Returns the TModel object which contains the data of the last row; and returns null if no row is found.

Examples

The following code example demonstrates how to use the LastOrDefault method to get the last record object in DataStore.

using Appeon.ApiDoc.Models;
using DWNet.Data;
using System;

namespace Appeon.ApiDoc.IDataStoreExamples
{
    public class LastOrDefaultExample
    {
        private readonly SchoolContext _context;

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

        public void Example1()
        {
            // Instantiates a DataStore object with datawindow: d_department.
            var datastore = new DataStore("d_department", _context);

            datastore.Retrieve();

            // The last record in the Department table is: 
            // departmentid = 7, name = Mathematics
            var department = datastore.LastOrDefault<D_Department>();

            Console.WriteLine("Department ID: {0}; Department Name: {1}",
                               department.Departmentid, department.Name);

            /*This code produces the following output:
             
            Department ID: 7; Department Name: Mathematics
            */
        }
    }
}

Example Refer To

Model Class: D_Department
DataWindow File: d_department

Applies to

.NET Standard

2.x