强制转换为值类型“System.Double”失败,因为物化值为空。结果类型的泛型参数或查询必须使用可为空的类型... foreach (var item in entityList) { ChannelReportDto channelReportDto = new ChannelReportDto(); ... c# 2024-06-26 36 点赞 0 评论 54 浏览