/// <summary> /// 更新一条数据 /// </summary> public void Update(RestaurantMIS.Model.CaiDan model) { StringBuilder strSql = new StringBuilder(); strSql.Append("update CaiDan set "); if (model.Category != null) { strSql.Append("Category='" + model.Category + "',"); } if (model.Name != null) { strSql.Append("Name='" + model.Name + "',"); } strSql.Append("Price=" + model.Price + ","); if (model.LogDate != null) { strSql.Append("LogDate='" + model.LogDate + "',"); } int n = strSql.ToString().LastIndexOf(","); strSql.Remove(n, 1); strSql.Append(" where ID=" + model.ID + " "); DbHelperOleDb.ExecuteSql(strSql.ToString()); }
/// <summary> /// 增加一条数据 /// </summary> public void Add(RestaurantMIS.Model.CaiDan model) { StringBuilder strSql = new StringBuilder(); strSql.Append("insert into CaiDan("); strSql.Append("[Category],[Name],[Price],[LogDate])"); strSql.Append(" values ("); strSql.Append("@Category,@Name,@Price,@LogDate)"); OleDbParameter[] parameters = { new OleDbParameter("@Category", OleDbType.VarChar, 255), new OleDbParameter("@Name", OleDbType.VarChar, 255), new OleDbParameter("@Price", OleDbType.Decimal), new OleDbParameter("@LogDate", OleDbType.Date) }; parameters[0].Value = model.Category; parameters[1].Value = model.Name; parameters[2].Value = model.Price; parameters[3].Value = model.LogDate; DbHelperOleDb.ExecuteSql(strSql.ToString(), parameters); }
/// <summary> /// 得到一个对象实体 /// </summary> public RestaurantMIS.Model.CaiDan GetModel(int ID) { StringBuilder strSql = new StringBuilder(); strSql.Append("select ID,Category,Name,Price,LogDate from CaiDan "); strSql.Append(" where ID=@ID "); OleDbParameter[] parameters = { new OleDbParameter("@ID", OleDbType.Integer, 4) }; parameters[0].Value = ID; RestaurantMIS.Model.CaiDan model = new RestaurantMIS.Model.CaiDan(); DataSet ds = DbHelperOleDb.Query(strSql.ToString(), parameters); if (ds.Tables[0].Rows.Count > 0) { if (ds.Tables[0].Rows[0]["ID"].ToString() != "") { model.ID = int.Parse(ds.Tables[0].Rows[0]["ID"].ToString()); } model.Category = ds.Tables[0].Rows[0]["Category"].ToString(); model.Name = ds.Tables[0].Rows[0]["Name"].ToString(); if (ds.Tables[0].Rows[0]["Price"].ToString() != "") { model.Price = decimal.Parse(ds.Tables[0].Rows[0]["Price"].ToString()); } if (ds.Tables[0].Rows[0]["LogDate"].ToString() != "") { model.LogDate = DateTime.Parse(ds.Tables[0].Rows[0]["LogDate"].ToString()); } return(model); } else { return(null); } }