public virtual async Task DoRealDeleteAsync()
{
try
{
List <Guid> fileids = new List <Guid>();
var pros = typeof(TModel).GetProperties();
//如果包含附件，则先删除附件
var fa = pros.Where(x => x.PropertyType == typeof(FileAttachment) || typeof(TopBasePoco).IsAssignableFrom(x.PropertyType)).ToList();
foreach (var f in fa)
{
if (f.GetValue(Entity) is FileAttachment file)
{
fileids.Add(file.ID);
}
f.SetValue(Entity, null);
}
DC.DeleteEntity(Entity);
await DC.SaveChangesAsync();
foreach (var item in fileids)
{
FileAttachmentVM ofa = new FileAttachmentVM();
ofa.CopyContext(this);
ofa.SetEntityById(item);
await ofa.DoDeleteAsync();
}
}
catch (Exception)
{
MSD.AddModelError("", "数据使用中，无法删除");
}
}
public virtual async Task DoRealDeleteAsync()
{
try
{
List <Guid> fileids = new List <Guid>();
var pros = typeof(TModel).GetProperties();
//如果包含附件，则先删除附件
var fa = pros.Where(x => x.PropertyType == typeof(FileAttachment) || typeof(TopBasePoco).IsAssignableFrom(x.PropertyType)).ToList();
foreach (var f in fa)
{
if (f.GetValue(Entity) is FileAttachment file)
{
fileids.Add(file.ID);
}
f.SetValue(Entity, null);
}
var fas = pros.Where(x => typeof(IEnumerable <ISubFile>).IsAssignableFrom(x.PropertyType)).ToList();
foreach (var f in fas)
{
var subs = f.GetValue(Entity) as IEnumerable <ISubFile>;
foreach (var sub in subs)
{
fileids.Add(sub.FileId);
}
f.SetValue(Entity, null);
}
if (typeof(TModel) != typeof(FileAttachment))
{
foreach (var pro in pros)
{
if (pro.PropertyType.GetTypeInfo().IsSubclassOf(typeof(TopBasePoco)))
{
pro.SetValue(Entity, null);
}
}
}
DC.DeleteEntity(Entity);
await DC.SaveChangesAsync();
foreach (var item in fileids)
{
FileAttachmentVM ofa = new FileAttachmentVM();
ofa.CopyContext(this);
ofa.SetEntityById(item);
await ofa.DoDeleteAsync();
}
}
catch (Exception e)
{
MSD.AddModelError("", Program._localizer["DeleteFailed"]);
}
}
public virtual async Task DoAddAsync()
{
DoAddPrepare();
//删除不需要的附件
if (DeletedFileIds != null)
{
foreach (var item in DeletedFileIds)
{
FileAttachmentVM ofa = new FileAttachmentVM();
ofa.CopyContext(this);
ofa.SetEntityById(item);
await ofa.DoDeleteAsync();
}
}
await DC.SaveChangesAsync();
}
public virtual async Task DoEditAsync(bool updateAllFields = false)
{
DoEditPrepare(updateAllFields);
await DC.SaveChangesAsync();
//删除不需要的附件
if (DeletedFileIds != null)
{
foreach (var item in DeletedFileIds)
{
FileAttachmentVM ofa = new FileAttachmentVM();
ofa.CopyContext(this);
ofa.SetEntityById(item);
await ofa.DoDeleteAsync();
}
}
}