21 Kasım 2020 Cumartesi
16 Kasım 2020 Pazartesi
8 Kasım 2020 Pazar
QueryParamsModel
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
namespace Model.Model
{
public class QueryParamsModel
{
public string Filter { get; set; }
public string SortOrder { get; set; }
public string SortField { get; set; }
public int PageSize { get; set; }
public int PageNumber { get; set; }
public IQueryable Sort(IQueryable query)
{
if (!string.IsNullOrEmpty(this.SortField))
{
var entityType = typeof(T);
var property = entityType
.GetProperties()
.FirstOrDefault(c => c.Name.ToLowerInvariant() == this.SortField.ToLowerInvariant());
if (property != null)
{
var parameterExp = Expression.Parameter(entityType);
var memberExp = Expression.MakeMemberAccess(parameterExp, property);
var bodyExp = Expression.Convert(memberExp, typeof(object));
var lambdaExp = Expression.Lambda>(bodyExp, parameterExp);
if (this.SortOrder == "desc")
{
query = query.OrderByDescending(lambdaExp);
}
else
{
query = query.OrderBy(lambdaExp);
}
}
}
return query;
}
}
}
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