优化批号生成

src/WMS.Web.Repositories/InStockRepositories.cs

@@ -410,7 +410,7 @@ namespace WMS.Web.Repositories
         /// <returns></returns>
         public async Task<InStockErpDetails> GetLastBillNo()
         {
-            var entity = await _context.InStockErpDetails.OrderByDescending(x => x.Id).FirstOrDefaultAsync();
+            var entity = await _context.InStockErpDetails.Where(x=>!string.IsNullOrEmpty(x.BatchBillNo)).OrderByDescending(x => x.Id).FirstOrDefaultAsync();
             return entity;
         }