[英]Joining two tables entity framework
我正在嘗試使用LINQ在實體框架中加入兩個表
這些是模型:
public partial class PredbiljezbeEF
{
public int idPredbiljezba { get; set; }
public Nullable<System.DateTime> datumPredbiljezba { get; set; }
public string imePolaznik { get; set; }
public string prezimePolaznik { get; set; }
public string gradPolaznik { get; set; }
public string adresaPolaznik { get; set; }
public Nullable<int> postanskiBrojPolaznik { get; set; }
public Nullable<bool> statusPredbiljezba { get; set; }
public int idSeminar { get; set; }
public virtual SeminariEF SeminariEF { get; set; }
}
public partial class SeminariEF
{
public SeminariEF()
{
this.PredbiljezbeEFs = new HashSet<PredbiljezbeEF>();
}
public int idSeminar { get; set; }
public string nazivSeminar { get; set; }
public string opisSeminar { get; set; }
public string datumSeminar { get; set; }
public Nullable<bool> statusSeminar { get; set; }
public Nullable<int> brojPredbiljezbi { get; set; }
這是LINQ表達式:
if(!IsPostBack)
{
SeminariEntities db = new SeminariEntities();
var predB = (from x in db.PredbiljezbeEFs
join y in db.SeminariEFs on x.idSeminar equals y.idSeminar
select new
{
id = x.idPredbiljezba,
ime = x.imePolaznik,
prez = x.prezimePolaznik,
datum = x.datumPredbiljezba,
grad = x.gradPolaznik,
adresa = x.adresaPolaznik,
post = x.postanskiBrojPolaznik,
status = x.statusPredbiljezba,
naziv = y.nazivSeminar,
datumS = y.datumSeminar
}).ToList();
//var predB = (from x in db.PredbiljezbeEFs select x).ToList();
gvPredbiljezbe.DataSource = predB.ToList();
gvPredbiljezbe.DataBind();
}
我收到此錯誤:
數據綁定:'<> f__AnonymousType0
10[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Nullable
1 [[System.DateTime,mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089 ]],mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089],[System.String,mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089],[System.String,mscorlib,Version = 4.0.0.0,文化=中性,PublicKeyToken = b77a5c561934e089],[System.Nullable1[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.Nullable
1 [[System.Boolean,mscorlib,Version = 4.0.0.0,Culture = neutral,PublicKeyToken = b77a5c561934e089]],m scorlib,版本= 4.0.0.0,文化= n ...”不包含名稱為“ idPredbiljezba”的屬性。
有人可以幫忙嗎?
從異常message => something
(數據網格可能是?)正嘗試從gvPredbiljezbe
dataSource
[idPredbiljezba]
訪問名稱為[idPredbiljezba]
屬性,但查詢最終投影不包含此類屬性,因此您將屬性[idPredbiljezba]
投影為[id]
希望能有所幫助
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