我有3个实体,中间的一个加入外部的两个。 我有一个RequestType1的值,我需要的是使用Linq的RequestField1的相应值。 RequestType1的值为2。
我的课程看起来像这样
public partial class RequestField
{
public int RequestID { get; set; }
public int RequestField1 { get; set; }
public string FieldContents { get; set; }
public virtual FieldDefinition FieldDefinition { get; set; }
public virtual Request Request { get; set; }
}
public partial class FieldDefinition
{
public FieldDefinition()
{
this.RequestFields = new HashSet<RequestField>();
this.RequestTypes = new HashSet<RequestType>();
}
public int RequestField { get; set; }
public string FieldName { get; set; }
public string FieldReference { get; set; }
public virtual ICollection<RequestField> RequestFields { get; set; }
public virtual ICollection<RequestType> RequestTypes { get; set; }
}
public partial class RequestType
{
public RequestType()
{
this.Requests = new HashSet<Request>();
this.FieldDefinitions = new HashSet<FieldDefinition>();
}
public int RequestType1 { get; set; }
public string TypeDescription { get; set; }
public virtual ICollection<Request> Requests { get; set; }
public virtual ICollection<FieldDefinition> FieldDefinitions { get; set; }
}
答案 0 :(得分:0)
如果我正确地阅读你的代码,那就是这样的:
var requestFields = myRequestType.SelectMany(
rt => rt.FieldDefinitions.SelectMany(
fd => fd.RequestFields.Select(
rf => rf.RequestField1)));