当前位置: 首页>>代码示例>>C#>>正文


C# DbEntityEntry.IsAttr方法代码示例

本文整理汇总了C#中DbEntityEntry.IsAttr方法的典型用法代码示例。如果您正苦于以下问题:C# DbEntityEntry.IsAttr方法的具体用法?C# DbEntityEntry.IsAttr怎么用?C# DbEntityEntry.IsAttr使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在DbEntityEntry的用法示例。


在下文中一共展示了DbEntityEntry.IsAttr方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: ApplyAuditLog

        public void ApplyAuditLog(DbContext workingContext, DbEntityEntry entry, LogOperation logOperation)
        {
            var includedProperties = new List<string>();
            var entityKey = workingContext.GetEntityKey(entry.Entity);
            var entityType = entry.Entity.GetType();

            if (entry.IsAttr<AuditableAttribute>())
            {
                var props = entityType.GetProperties().Where(pi => !pi.IsAttr<NotAuditableAttrubute>());
                includedProperties.AddRange(props.Select(pi => pi.Name));
            }
            else
            {
                var props = entityType.GetProperties()
                    .Where(p => p.IsAttr<AuditableAttribute>() && !p.IsAttr<NotAuditableAttrubute>());

                includedProperties.AddRange(props.Select(pi => pi.Name));
            }

            if (entry.State == EntityState.Modified)
            {
                var originalValues = workingContext.Entry(entry.Entity).GetDatabaseValues();
                var changedProperties = (from propertyName in originalValues.PropertyNames
                    let propertyEntry = entry.Property(propertyName)
                    let currentValue = propertyEntry.CurrentValue
                    let originalValue = originalValues[propertyName]
                    where (!Equals(currentValue, originalValue) && includedProperties.Contains(propertyName))
                    select new ChangedProperty
                    {
                        Name = propertyName,
                        CurrentValue = currentValue,
                        OriginalValue = originalValue
                    }).ToArray();

                if (changedProperties.Any())
                {
                    foreach (var log in changedProperties.Select(changedProperty => new AuditLog
                    {
                        Created = DateTime.Now,
                        EntityFullName = entry.Entity.GetType().FullName,
                        Entity = Utils.Serialize(entry.Entity),
                        EntityIdBytes = Utils.Serialize(entry.Entity),
                        Operation = logOperation,
                        OldValue = changedProperty.OriginalValue.ToString(),
                        NewValue = changedProperty.CurrentValue.ToString(),
                        PropertyName = changedProperty.Name
                    }))
                    {
                        AuditLogs.Add(log);
                    }

                    SaveChanges();
                }
            }
            else
            {
                var log = new AuditLog
                {
                    Created = DateTime.Now,
                    EntityFullName = entry.Entity.GetType().FullName,
                    Entity = Utils.Serialize(entry.Entity),
                    EntityIdBytes = Utils.Serialize(entityKey),
                    Operation = logOperation,
                };

                AuditLogs.Add(log);
                SaveChanges();
            }
        }
开发者ID:bjornen,项目名称:EF.Audit,代码行数:69,代码来源:LogContext.cs


注:本文中的DbEntityEntry.IsAttr方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。