src/EasyFrameWork/Mvc/Controllers/DataTableOption.cs
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/* http://www.zkea.net/
* Copyright (c) ZKEASOFT. All rights reserved.
* http://www.zkea.net/licenses */
using Easy.LINQ;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Linq.Expressions;
using Easy.Extend;
using System.Reflection;
namespace Easy.Mvc.Controllers
{
public class DataTableOption
{
public int Draw { get; set; }
public ColumnOption[] Columns { get; set; }
public OrderOption[] Order { get; set; }
public int Start { get; set; }
public int Length { get; set; }
public SearchOption Search { get; set; }
public Expression<Func<T, bool>> AsExpression<T>() where T : class
{
QueryCollection queryCollection = new QueryCollection();
var properties = typeof(T).GetTypeInfo().GetProperties();
foreach (var item in Columns)
{
var p = properties.FirstOrDefault(m => m.Name.Equals(item.Data, StringComparison.OrdinalIgnoreCase));
if (p == null) continue;
var realType = Nullable.GetUnderlyingType(p.PropertyType) ?? p.PropertyType;
string value = null;
if (item.Search != null && item.Search.Value.IsNotNullAndWhiteSpace())
{
value = item.Search.Value;
}
else if (Search != null && Search.Value.IsNotNullAndWhiteSpace() && realType == typeof(string))
{
value = Search.Value;
}
if ((item.Search.Opeartor == Query.Operators.Range && item.Search.ValueMin.IsNullOrWhiteSpace() && item.Search.ValueMax.IsNullOrWhiteSpace()) ||
(item.Search.Opeartor != Query.Operators.Range && value.IsNullOrWhiteSpace())) continue;
Query query = new Query();
query.Name = p.Name;
try
{
query.Value = Easy.Reflection.ClassAction.ValueConvert(p, value);
query.ValueMin = Easy.Reflection.ClassAction.ValueConvert(p, item.Search.ValueMin);
query.ValueMax = Easy.Reflection.ClassAction.ValueConvert(p, item.Search.ValueMax);
//if (query.ValueMax != null && query.ValueMax is DateTime)
//{
// query.ValueMax = ((DateTime)query.ValueMax).AddDays(1).AddMilliseconds(-1);
//}
}
catch
{
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