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[TestMethod()]
public void Object转List测试()
{
List<int> test = new List<int> { 1, 2, 3, 4, 6 };
var obj = (object)test;
//运行的时候,List=null,在断点监视的时候,(obj as IEnumerable<object>)有值
var list = obj as IEnumerable<object>;
}
var list = (IEnumerable) obj;
var list = obj as IEnumerable<int>;