EFE - Request - UpdateFromQuery with increment

CSharp · Console

/Program.cs

// @nuget: EntityFramework
// @nuget: Z.EntityFramework.Extensions

using System;
using System.Data.Entity;
using System.Linq;
using System.Collections.Generic;
					
public class Program
{
	public static void Main()
	{
		// Insert data
		using (var context = new EntityContext())
		{
			context.BulkInsert(Data());
			
			FiddleHelper.WriteTable("1 - Before: ", context.Customers.ToList());
		}
		
		using (var context = new EntityContext())
		{
			context.Customers.Where(x => x.Counter >= 1).UpdateFromQuery(x => new Customer {Counter = x.Counter + 10});
			
			FiddleHelper.WriteTable("2 - After: ", context.Customers.ToList());
		}
	}
	
	public static List<Customer> Data() 
	{
		List<Customer>  list = new List<Customer>();
		
		bool isActive = false;
		
		for(int i = 0; i < 3; i++)
		{
			isActive = !isActive;
			list.Add(new Customer() { Name = "Customer_" + i, Counter = i });
		}
		
		return list;
	}

	public class EntityContext : DbContext
	{
		public EntityContext() : base(FiddleHelper.GetConnectionStringSqlServer())
		{

		}
		
		public DbSet<Customer> Customers { get; set; }
	}
	
	
	public class Customer
	{
		public int CustomerID { get; set; }
		public string Name { get; set; }
		public int Counter { get; set; } 
	}
}