相关疑难解决方法(0)

如何使NameValueCollectionLINQ查询运算符可以访问,例如where,join,groupby？

我试过以下:

private NameValueCollection RequestFields()
{
    NameValueCollection nvc = new NameValueCollection()
                                  {
                                      {"emailOption: blah Blah", "true"},
                                      {"emailOption: blah Blah2", "false"},
                                      {"nothing", "false"},
                                      {"nothinger", "true"}
                                  };
    return nvc;

}

public void GetSelectedEmail()
{
    NameValueCollection nvc = RequestFields();
    IQueryable queryable = nvc.AsQueryable();
}

但我得到一个ArgumentException告诉我源不是IEnumerable <>.