123 lines
3.7 KiB
C#
123 lines
3.7 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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using SqlSugar;
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using System.Linq.Expressions;
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namespace ThingsGateway.Admin.Core;
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/// <summary>
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/// Sqlsugar分页拓展类
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/// </summary>
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public static class SqlSugarPageExtension
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{
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/// <summary>
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/// SqlSugar分页扩展
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/// </summary>
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/// <typeparam name="TEntity"></typeparam>
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/// <param name="queryable"></param>
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/// <param name="current"></param>
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/// <param name="size"></param>
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/// <returns></returns>
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public static SqlSugarPagedList<TEntity> ToPagedList<TEntity>(this ISugarQueryable<TEntity> queryable, int current,
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int size)
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{
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var total = 0;
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var records = queryable.ToPageList(current, size, ref total);
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var pages = (int)Math.Ceiling(total / (double)size);
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return new SqlSugarPagedList<TEntity>
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{
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Current = current,
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Size = size,
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Records = records,
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Total = total,
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Pages = pages,
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HasNextPages = current < pages,
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HasPrevPages = current - 1 > 0
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};
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}
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/// <summary>
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/// SqlSugar分页扩展
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/// </summary>
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/// <typeparam name="TEntity"></typeparam>
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/// <param name="queryable"></param>
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/// <param name="pageIndex"></param>
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/// <param name="pageSize"></param>
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/// <param name="whereExpression"></param>
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/// <returns></returns>
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public static async Task<SqlSugarPagedList<TEntity>> ToPagedListAsync<TEntity>(this ISugarQueryable<TEntity> queryable,
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int pageIndex, int pageSize, Expression<Func<TEntity, bool>> whereExpression = null)
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{
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RefAsync<int> totalCount = 0;
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if (whereExpression != null)
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queryable = queryable.Where(whereExpression);
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var records = await queryable.ToPageListAsync(pageIndex, pageSize, totalCount);
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//records = whereExpression != null ? records.Where(whereExpression).ToList() : records;
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var totalPages = (int)Math.Ceiling(totalCount / (double)pageSize);
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return new SqlSugarPagedList<TEntity>
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{
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Current = pageIndex,
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Size = pageSize,
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Records = records,
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Total = (int)totalCount,
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Pages = totalPages,
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HasNextPages = pageIndex < totalPages,
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HasPrevPages = pageIndex - 1 > 0
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};
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}
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}
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/// <summary>
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/// SqlSugar 分页泛型集合
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/// </summary>
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/// <typeparam name="TEntity"></typeparam>
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public class SqlSugarPagedList<TEntity>
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{
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/// <summary>
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/// 页码
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/// </summary>
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public int Current { get; set; }
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/// <summary>
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/// 是否有下一页
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/// </summary>
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public bool HasNextPages { get; set; }
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/// <summary>
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/// 是否有上一页
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/// </summary>
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public bool HasPrevPages { get; set; }
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/// <summary>
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/// 总页数
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/// </summary>
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public int Pages { get; set; }
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/// <summary>
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/// 当前页集合
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/// </summary>
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public IEnumerable<TEntity> Records { get; set; }
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/// <summary>
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/// 数量
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/// </summary>
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public int Size { get; set; }
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/// <summary>
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/// 总条数
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/// </summary>
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public int Total { get; set; }
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} |