以下查询已成功运行.
var tabs = (
from r in db.TabMasters
orderby r.colID
select new { r.colID,r.FirstName,r.LastName })
.Skip(rows * (page - 1)).Take(rows);
现在我想要返回JsonResult
var jsonData = new
{
total = (int)Math.Ceiling((float)totalRecords / (float)rows),page = page,records = totalRecords,rows = (from r in tabs
select new { id = r.colID,cell = new string[] { r.FirstName,r.LastName } }).ToArray()
};
return Json(jsonData,JsonRequestBehavior.AllowGet);
但它会给我一个错误,如:
无法在查询结果中初始化数组类型’System.String []’.请考虑使用’System.Collections.Generic.List`1 [System.String]’.
我该怎么做才能得到预期的结果?
解决方法
我怀疑它就像使用AsEnumerable()将最后一部分推入进程内查询一样简单:
var jsonData = new
{
total = (int)Math.Ceiling((float)totalRecords / (float)rows),rows = (from r in tabs.AsEnumerable()
select new { id = r.colID,cell = new[] { r.FirstName,r.LastName } }
).ToArray()
};
return Json(jsonData,JsonRequestBehavior.AllowGet);
为清楚起见,您可能希望从匿名类型初始化程序中提取该查询:
var rows = tabs.AsEnumerable()
.Select(r => new { id = r.colID,r.LastName })
.ToArray();
var jsonData = new {
total = (int)Math.Ceiling((float)totalRecords / (float)rows),page,rows
};
