如何过滤SelectList,以便仅在Classifier.Name ==“ CellTypes”的情况下获得ClassifierElements?甚至可行吗?我应该使用其他类型的对象,例如IEnumerable吗?
在CellController中:
ViewData["TypeId"] = new SelectList(_context.ClassifierElements, "Id", "Name");
以下是对象:
public class Cell
{
public int Id { get; set; }
public string Name { get; set; }
public int TypeId { get; set; }
public ClassifierElement Type { get; set; }
public ICollection<Component> Components { get; set; }
public ICollection<Parameter> Parameters { get; set; }
}
public class Classifier
{
public int Id { get; set; }
public string Name { get; set; }
public ICollection<ClassifierElement> ClassifierElements { get; set; }
}
public class ClassifierElement
{
public int Id { get; set; }
public int ClassifierId { get; set; }
public Classifier Classifier { get; set; }
public string Name { get; set; }
}
答案 0 :(得分:1)
您可以使用Linq表达式来过滤列表:
_context.ClassifierElements.Where(e => e.Name == "CellTypes")