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Entity Framework equivalent of the following query?


Entity Framework equivalent of the following query?

By : user2173409
Date : October 20 2020, 08:10 PM
wish help you to fix your issue Can someone tell me how to write an EF query that equals to this: , Long answer:
code :
var vendorIds = new int[] { 1, 17 };

_context
    .Orders
    .Join(_context.Orderitems,
        o => o.Orderid,
        oi => oi.Orderid,
        (o, oi) => new { o, oi })
    .Join(_context.Vendorparts,
        o_oi => o_oi.oi.Inventoryid,
        vp => vp.Inventoryid,
        (o_oi, vp) => new { o_oi.o, o_oi.oi, vp })
    .Where(o_oi_vp => _context.Vendorparts
        .Where(vp
            => vp.Inventoryid == o_oi_vp.vp.Inventoryid
            && vendorIds.Contains(vp.Vendorid))
        .Join(_context.Vendors.Where(v => v.Candropship),
            vp => vp.Vendorid,        
            v => v.Vendorid,
            (vp, v) => new { vp, v })
        .Any())
    .Select(o_oi_vp => new {
        o_oi_vp.oi.orderid, 
        o_oi_vp.oi.inventoryid, 
        o_oi_vp.vp.vendorid 
    });


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nHibernate Query To Equivalent Entity Framework Query

nHibernate Query To Equivalent Entity Framework Query


By : ios beginner
Date : March 29 2020, 07:55 AM
it helps some times AFAIK EF does not have query batching see here. You could implement it yourself which is tricky.
Alternativly you could get NH to work under medium trust, information here and here.
Entity framework equivalent for NOT IN

Entity framework equivalent for NOT IN


By : AJJ
Date : March 29 2020, 07:55 AM
I wish this helpful for you I have a query like this , Try this
code :
IQueryable<Params> parame = db.Params.Where(p => p.valid.Equals(1) && 
    !db.clientParams.Any(e => e.pid == p.id && e.update == 0 && e.client  == 15))
                                     .OrderBy(e => e.id) //Order by any field.
                                     .Take(25);
PHP equivalent of .Net Entity Framework

PHP equivalent of .Net Entity Framework


By : Gabriel Silla
Date : March 29 2020, 07:55 AM
Any of those help With "Code-First" approach, Doctrine:
Article: Code First Approaching PHP with Doctrine 2.2.1 and Composer.
How to query for an entity that contains a specific related entity, with Entity Framework?

How to query for an entity that contains a specific related entity, with Entity Framework?


By : Crazed Martian
Date : March 29 2020, 07:55 AM
What is the equivalent of this UPDATE SQL query in Entity Framework?

What is the equivalent of this UPDATE SQL query in Entity Framework?


By : bees
Date : March 29 2020, 07:55 AM
wish of those help , You can achieve it as below:
code :
using (var context = new DBEntities())
{
    var entity = context.tblNames.FirstOrDefault(x => x.ID == 1); 
    entity.firstName = "John";
    context.SaveChanges();
}
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