Here's my EF Core code:
int page = 1, rowPerPage = 5;
int count = ctx.Specialty.Count();
int start = page * rowPerPage;
var Select = ctx.Specialty.OrderByDescending(u => u.IdS)
.Skip(start)
.Take(rowPerPage)
.AsEnumerable();
Error:
Incorrect syntax near 'OFFSET'. Invalid usage of the option NEXT in the FETCH statement
There is a compatibility setting (UseRowNumberForPaging) for this which can be configured either in the DbContext itself:
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
var coonectionString = "Data Source=localhost\\MSSQLSERVER01;Initial Catalog=AppDb01;Integrated Security=True";
optionsBuilder.UseSqlServer(coonectionString, builder => builder.UseRowNumberForPaging());
}
Or as a part of the Startup:
public void ConfigureServices(IServiceCollection services)
{
var coonectionString = "Data Source=localhost\\MSSQLSERVER01;Initial Catalog=AppDb01;Integrated Security=True";
services.AddDbContext<AppDbContext>(options => options.UseSqlServer(coonectionString, builder => builder.UseRowNumberForPaging()));
}
UseRowNumberForPaging was removed in EF Core 3.x, method is marked as obsolete. However, you can use EfCore3.SqlServer2008Query package instead. There are 2 packages available in Nuget, one for >= .NET 5.0, other one is for >= .NET Core 3.1
Usage:
services.AddDbContext<MyDbContext>(o =>
o.UseSqlServer(Configuration.GetConnectionString("Default"))
.ReplaceService<IQueryTranslationPostprocessorFactory, SqlServer2008QueryTranslationPostprocessorFactory>());
For anyone using .Net 6 I found this package EntityFrameworkCore.UseRowNumberForPaging 0.3.0: https://www.nuget.org/packages/EntityFrameworkCore.UseRowNumberForPaging/
Base on the github issue: https://github.com/dotnet/efcore/issues/16400
Thank you Rwing, whoever you are, you're a hero!
sql server 2008 not support from my query
solution:
public class AppDbContext : DbContext
{
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
var coonectionString = "Data Source=localhost\\MSSQLSERVER01;Initial Catalog=AppDb01;Integrated Security=True";
optionsBuilder.UseSqlServer(coonectionString);
}
}
Value connection string to the Target server and also inject the settings , The sample code is in the default ASP NET Core project format.