小编Far*_*cos的帖子

尝试从包管理器控制台安装 Entity Framework 6.1.3 时。我得到以下输出。

Install-Package EntityFramework 
Attempting to gather dependency information for package 'EntityFramework.6.1.3' with respect to project 'OnlineShop', targeting '.NETFramework,Version=v4.6.1'
Attempting to resolve dependencies for package 'EntityFramework.6.1.3' with DependencyBehavior 'Lowest'
Resolving actions to install package 'EntityFramework.6.1.3'
Resolved actions to install package 'EntityFramework.6.1.3'
Adding package 'EntityFramework.6.1.3' to folder 'D:\Leva\Work\Informatika\CSharp\My OPENSOURCE projects\OnlineShop\packages'
Added package 'EntityFramework.6.1.3' to folder 'D:\Leva\Work\Informatika\CSharp\My OPENSOURCE projects\OnlineShop\packages'
Added package 'EntityFramework.6.1.3' to 'packages.config'
Executing script file 'D:\Leva\Work\Informatika\CSharp\My OPENSOURCE projects\OnlineShop\packages\EntityFramework.6.1.3\tools\install.ps1'
Exception calling "LoadFrom" with "1" argument(s): "Could not load …

我创建了2个表示数据库实体的类.

第一实体:

public enum FlightStatus
{
        checkIn,
        gateClosed,
        arrived,
        departedAt,
        unknown,
        canceled,
        expectedAt,
        delayed,
        InFlight
}

public class Flight 
{
        [Key]
        public string FlightNumber { get; set; }
        public DateTime Arrival { get; set; }
        public DateTime Departure { get; set; }
        public string CityOfArrival { get; set; }
        public string CityOfDeparture { get; set; }
        public char Terminal { get; set; }

        public FlightStatus Status { get; set; }
        public int Gate { get; set; }

        public virtual ICollection<Passanger> …

我需要找到一些在按下静音按钮时触发的事件。仅当我更改音量时，音量更改才有效。

  <audio id="volumeController" onvolumechange="changeVolume()"controls>
            <source src="~/Sounds/beep.mp3" type="audio/mpeg"/>
        </audio>

我还尝试使用 onclick 和 onchange 事件，但它总是发送 1 而不是当前音量，而不是 0。