/// <summary>
/// 添加变更
/// </summary>
/// <param name="expression">属性表达式,范例：t => t.Name</param>
/// <param name="newValue">新值,范例：newEntity.Name</param>
protected void AddChange <TProperty, TValue>(Expression <Func <T, TProperty> > expression, TValue newValue)
{
var member = Lambda.GetMemberExpression(expression);
var name = Lambda.GetMemberName(member);
var description = Reflection.GetDisplayNameOrDescription(member.Member);
var value = member.Member.GetPropertyValue(this);
AddChange(name, description, Convert.To <TValue>(value), newValue);
}
/// <summary>
/// 动态创建实例
/// </summary>
/// <typeparam name="T">目标类型</typeparam>
/// <param name="type">类型</param>
/// <param name="parameters">传递给构造函数的参数</param>
public static T CreateInstance <T>(Type type, params object[] parameters)
{
return(Convert.To <T>(Activator.CreateInstance(type, parameters)));
}
/// <summary>
/// 获取当前应用程序标识
/// </summary>
/// <param name="session">用户会话</param>
public static T GetApplicationId <T>(this ISession session)
{
return(Convert.To <T>(Web.Identity.GetValue(ClaimTypes.ApplicationId)));
}
/// <summary>
/// 获取当前操作人标识
/// </summary>
/// <param name="session">用户会话</param>
public static T GetUserId <T>(this ISession session)
{
return(Convert.To <T>(session.UserId));
}