获取所有模型类型 [英] Get all model types

问题描述

如何获取属于模型的实体类型列表，所以我可以测试该模型是否与该实体类型一起使用？

How can I get a list of entity types that are part of the model, so I can test that the model actually works with that entity type?

var dcx = new MyDbContext();
var lst = new List<Type>();
//populate the list here somehow
//...
foreach (var t in lst) {
    var set = dcx.Set(t); //I'm trying to avoid an exception here
    try {
        var test = set.FirstOrDefault();
    } catch (Exception ex) {
        Console.WriteLine("{0} has an error", t);
    }
}

注意：完全可以查询 dcx.Set（t）即使在 MyDbContext DbSet 属性C>;因此，通过对 MyDbContext 的属性进行反复迭代是不够的，其返回类型的通用定义是 DbSet 或甚至 IDbSet< T> 。

NB: It is perfectly possible to query dcx.Set(t) even if there is no corresponding DbSet property on MyDbContext; therefore it's not enough to iterate via reflection over the properties of MyDbContext whose return type's generic definition is DbSet<T> or even IDbSet<T>.

推荐答案

感谢< a href =https://stackoverflow.com/questions/33928716/get-all-model-types?noredirect=1#comment55710171_33928716> @GertArnold的评论，我现在使用以下内容：

Thanks to the link in @GertArnold 's comment, I am now using the following:

var dcx = new MyDbContext();
var objContext = ((IObjectContextAdapter)dcx).ObjectContext;
var types = db.ObjectContext.MetadataWorkspace.GetItems<EntityType>(DataSpace.OSpace).Select(x => Type.GetType(x.FullName));
foreach (var t in lst) {
...

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