修复金控解绑逻辑

AppStart/Helper/SycnSpServer/SycnSpBindService.cs

@@ -93,15 +93,17 @@ namespace MySystem
                                 PxcModels.MachineForMerNo forMerNo = db.MachineForMerNo.FirstOrDefault(m => m.MerNo == Bind.MerNo);
                                 if (forMerNo != null)
                                 {
-                                    PxcModels.PosMachinesTwo pos = db.PosMachinesTwo.FirstOrDefault(m => m.Id == forMerNo.SnId) ?? new PxcModels.PosMachinesTwo();
-                                    PxcModels.PosMerchantInfo merchant = db.PosMerchantInfo.FirstOrDefault(m => m.Id == pos.BindMerchantId);
-                                    if(merchant != null)
-                                    {
-                                        db.PosMerchantInfo.Remove(merchant);
-                                    }
                                     db.MachineForMerNo.Remove(forMerNo);
                                     db.SaveChanges();
                                 }
+                                PxcModels.PosMachinesTwo pos = db.PosMachinesTwo.FirstOrDefault(m => m.PosSn == Bind.MerSnNo) ?? new PxcModels.PosMachinesTwo();
+                                PxcModels.PosMerchantInfo merchant = db.PosMerchantInfo.FirstOrDefault(m => m.Id == pos.BindMerchantId);
+                                if(merchant != null)
+                                {
+                                    pos.BindMerchantId = 0;
+                                    db.PosMerchantInfo.Remove(merchant);
+                                    db.SaveChanges();
+                                }
 
                                 BindRecord edit = spdb.BindRecord.FirstOrDefault(m => m.Id == Bind.Id);
                                 if (edit != null)