.

FireBirdUtil/SqlHelper/SqlHelper.cs

@@ -100,6 +100,12 @@ namespace FireBirdUtil.SqlHelpers
 			string errorMessage;
 			ExecuteNonQuery(sql, out success, out errorMessage);
 		}
+		public string ExecuteNonQuery2(string sql, out bool success)
+		{
+			string errorMessage;
+			ExecuteNonQuery(sql, out success, out errorMessage);
+			return errorMessage;
+		}
 
 		public void ExecuteNonQuery(string sql, out bool success, out string errorMessage)
 		{

WeighBusiness/BL/ProductCatalogBL.cs

@@ -299,10 +299,14 @@ namespace WeighBusiness.BL
           {
             string insertSql = InsertUtil.GetInsertSql(TableNames.客户端产品分类,
               new string[] { "ProductCatalog_ID", "Name", "Sequence", "RowVersion" },
-              new string[] { catalog.ProductCatalog_ID.ToString(), catalog.ProductCatalog_ID.ToString(), catalog.Sequence.ToString(),"0" });
-            she.ExecuteNonQuery(insertSql, out success);
-            if (!success)
-              she.Rollback();
+              new string[] { catalog.ProductCatalog_ID.ToString(), catalog.ProductCatalog_ID.ToString(), catalog.Sequence == null ? "null" : catalog.Sequence.ToString(), "0" }); 
+            she.ExecuteNonQuery(insertSql, out success, out errorMessage);
+            if (!success)
+            {
+              throw new ApplicationException(errorMessage);
+              //she.Rollback();
+            }
+              
           }
         }
         she.Commit();