no message

src/Bailun.Discuz.Application/WeiPan/WeiPanService.cs

@@ -683,8 +683,13 @@ namespace Bailun.Discuz.Application.WeiPan
 
             //判断线上文件列表数据是否有删除，如果有删除要进行同步删除
             var fileList= await _weiPanFileListRepository.Query().AsNoTracking().ToListAsync();
+            var delFiles = new List<WeiPanFileList>();
+            if (filList.Count>0)
+            {
                 var onLineFileIds = filList.Select(u => u.FileId).ToArray();
-            var delFiles=fileList.Where(u => !onLineFileIds.Contains(u.FileId)).ToList();
+                delFiles = fileList.Where(u => !onLineFileIds.Contains(u.FileId)).ToList();
+            }
+            
             if(delFiles.Any())
             {
                 messageSb.Append($"删除帖子数量为:{delFiles.Count},分别为:{string.Join(",", delFiles.Select(u => u.FileName).ToArray()) };");