/// <summary>
/// 批量修改，默认对Ids中包含的数据进行修改，子类如果有特殊判断应重载本函数
/// </summary>
/// <returns>true代表成功，false代表失败</returns>
public virtual bool DoBatchEdit()
{
//获取批量修改VM的所有属性
var pros = LinkedVM.GetType().GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.DeclaredOnly);
bool rv = true;
List <Guid> idsData = new List <Guid>(Ids);
//找到对应的BaseCRUDVM，并初始化
var vmtype = this.GetType().Assembly.GetExportedTypes().Where(x => x.IsSubclassOf(typeof(BaseCRUDVM <TModel>))).FirstOrDefault();
IBaseCRUDVM <TModel> vm = null;
if (vmtype != null)
{
vm = vmtype.GetConstructor(System.Type.EmptyTypes).Invoke(null) as IBaseCRUDVM <TModel>;
vm.CopyContext(this);
}
//循环所有数据
for (int i = 0; i < idsData.Count; i++)
{
try
{
//如果找不到对应数据，则输出错误
TModel entity = null;
entity = DC.Set <TModel>().Find(idsData[i]);
if (vm != null)
{
vm.SetEntity(entity);
}
if (entity == null)
{
ErrorMessage.Add(idsData[i], "数据不存在");
rv = false;
break;
}
//如果能找到，则循环LinkedVM中的属性，给entity中同名属性赋值
foreach (var pro in pros)
{
var proToSet = entity.GetType().GetProperty(pro.Name);
var val = FC.ContainsKey("LinkedVM." + pro.Name) ? FC["LinkedVM." + pro.Name] : null;
if (proToSet != null && val != null)
{
var hasvalue = false;
if (val is StringValues sv && StringValues.IsNullOrEmpty(sv) == false)
{
hasvalue = true;
}
if (hasvalue)
{
proToSet.SetValue(entity, pro.GetValue(LinkedVM));
}
}
}
//如果有对应的BaseCRUDVM则使用其进行数据验证
if (vm != null)
{
vm.Validate();
var errors = vm.MSD;
if (errors != null && errors.Count > 0)
{
var error = "";
foreach (var key in errors.Keys)
{
if (errors[key].Count > 0)
{
error += errors[key].Select(x => x.ErrorMessage).ToSpratedString();
}
}
if (error != "")
{
ErrorMessage.Add(idsData[i], error);
rv = false;
break;
}
}
}
if (typeof(TModel).IsSubclassOf(typeof(BasePoco)))
{
BasePoco ent = entity as BasePoco;
if (ent.CreateTime == null)
{
ent.CreateTime = DateTime.Now;
}
if (string.IsNullOrEmpty(ent.CreateBy))
{
ent.CreateBy = LoginUserInfo?.ITCode;
}
}
DC.UpdateEntity(entity);
}
catch (Exception e)
{
SetExceptionMessage(e, idsData[i]);
rv = false;
}
}
//进行数据库的修改操作
if (rv == true)
{
try
{
DC.SaveChanges();
}
catch (Exception e)
{
SetExceptionMessage(e, null);
rv = false;
}
}
//如果有错误，输出错误信息
if (rv == false)
{
if (ErrorMessage.Count > 0)
{
foreach (var id in idsData)
{
if (!ErrorMessage.ContainsKey(id))
{
ErrorMessage.Add(id, "已回滚");
}
}
}
ListVM.DoSearch();
foreach (var item in ListVM.GetEntityList())
{
item.BatchError = ErrorMessage.Where(x => x.Key == item.ID).Select(x => x.Value).FirstOrDefault();
}
}
return(rv);
}
/// <summary>
/// 批量删除，默认对Ids中包含的主键的数据进行删除。子类如果有特殊判断应重载本函数
/// </summary>
/// <returns>true代表成功，false代表失败</returns>
public virtual bool DoBatchDelete()
{
bool rv = true;
//循环所有数据Id
List <Guid> idsData = new List <Guid>(Ids);
for (int i = 0; i < idsData.Count; i++)
{
string checkErro = null;
//检查是否可以删除，如不能删除则直接跳过
if (CheckIfCanDelete(idsData[i], out checkErro) == false)
{
ErrorMessage.Add(idsData[i], checkErro);
rv = false;
break;
}
//进行删除
try
{
var ctor = typeof(TModel).GetConstructor(Type.EmptyTypes);
if (typeof(TModel).IsSubclassOf(typeof(PersistPoco)))
{
var pp = DC.Set <TModel>().Find(idsData[i]);
(pp as PersistPoco).IsValid = false;
(pp as PersistPoco).UpdateTime = DateTime.Now;
(pp as PersistPoco).UpdateBy = LoginUserInfo.ITCode;
DC.UpdateProperty(pp, "IsValid");
DC.UpdateProperty(pp, "UpdateTime");
DC.UpdateProperty(pp, "UpdateBy");
}
else
{
TModel m = ctor.Invoke(null) as TModel;
m.ID = idsData[i];
DC.Set <TModel>().Attach(m);
DC.DeleteEntity(m);
}
}
catch (Exception e)
{
SetExceptionMessage(e, idsData[i]);
rv = false;
}
}
//进行数据库的删除操作
if (rv == true)
{
try
{
DC.SaveChanges();
}
catch (Exception e)
{
SetExceptionMessage(e, null);
rv = false;
}
}
//如果失败，添加错误信息
if (rv == false)
{
if (ErrorMessage.Count > 0)
{
foreach (var id in idsData)
{
if (!ErrorMessage.ContainsKey(id))
{
ErrorMessage.Add(id, "已回滚");
}
}
}
ListVM?.DoSearch();
if (ListVM != null)
{
foreach (var item in ListVM?.GetEntityList())
{
item.BatchError = ErrorMessage.Where(x => x.Key == item.ID).Select(x => x.Value).FirstOrDefault();
}
}
MSD.AddModelError("", "数据已被使用，无法删除");
}
return(rv);
}