在ASP.NET Core 3.1中实现Datatables服务器端处理的方法如下:
首先,安装所需的NuGet包。使用Package Manager Console或者NuGet包管理器界面,添加以下NuGet包:
在Startup.cs文件中,添加以下代码:
public void ConfigureServices(IServiceCollection services)
{
services.AddControllersWithViews().AddNewtonsoftJson();
services.AddDbContext(options =>
options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
}
public class DataController : Controller
{
private readonly ApplicationDbContext _context;
public DataController(ApplicationDbContext context)
{
_context = context;
}
[HttpPost]
public IActionResult LoadData([FromBody] DTParameters param)
{
var searchValue = param.Search.Value;
var sortColumnName = param.Columns[param.Order[0].Column].Data;
var sortDirection = param.Order[0].Dir;
var query = _context.YourEntity.AsQueryable();
// 搜索过滤
if (!string.IsNullOrEmpty(searchValue))
{
query = query.Where(x => x.Column1.Contains(searchValue) || x.Column2.Contains(searchValue));
}
// 排序
switch (sortColumnName)
{
case "Column1":
query = (sortDirection == "asc") ? query.OrderBy(x => x.Column1) : query.OrderByDescending(x => x.Column1);
break;
case "Column2":
query = (sortDirection == "asc") ? query.OrderBy(x => x.Column2) : query.OrderByDescending(x => x.Column2);
break;
// 添加其他列的排序逻辑
}
// 分页
var result = new DTResult
{
draw = param.Draw,
recordsTotal = query.Count(),
recordsFiltered = query.Count(),
data = query.Skip(param.Start).Take(param.Length).ToList()
};
return Json(result);
}
}
public class DTParameters
{
public int Draw { get; set; }
public int Start { get; set; }
public int Length { get; set; }
public DTColumn[] Columns { get; set; }
public DTOrder[] Order { get; set; }
public DTSearch Search { get; set; }
}
public class DTColumn
{
public string Data { get; set; }
public string Name { get; set; }
public bool Searchable { get; set; }
public bool Orderable { get; set; }
public DTSearch Search { get; set; }
}
public class DTOrder
{
public int Column { get; set; }
public string Dir { get; set; }
}
public class DTSearch
{
public string Value { get; set; }
public bool Regex { get; set; }
}
public class DTResult
{
public int draw { get; set; }
public int recordsTotal { get; set; }
public int recordsFiltered { get; set; }
public List data { get; set; }
}
$(document).ready(function() {
$('#dataTable').DataTable({
"processing": true,
"serverSide": true,
"ajax": {
"url": "/Data/LoadData",
"type": "POST"
},
"columns": [
{ "data": "column1" },
{ "data": "column2" },
// 添加其他列的配置
]
});
});
注意:上述代码示例假定您已经创建了一个名为YourEntity的实体类,其中包含Column1和Column2等属性。请根据您的实际需求进行相应的修改和调整。