/// <summary> /// 得到一个对象实体 /// </summary> public Dapper.Model.user_group_price GetModel(int group_id, int channel_id, int article_id) { StringBuilder strSql = new StringBuilder(); StringBuilder str1 = new StringBuilder(); Dapper.Model.user_group_price model = new Dapper.Model.user_group_price(); //利用反射获得属性的所有公共属性 PropertyInfo[] pros = model.GetType().GetProperties(); foreach (PropertyInfo p in pros) { str1.Append(p.Name + ",");//拼接字段 } strSql.Append("select top 1 " + str1.ToString().Trim(',')); strSql.Append(" from " + databaseprefix + "user_group_price"); strSql.Append(" where group_id=@group_id and channel_id=@channel_id and article_id=@article_id"); SqlParameter[] parameters = { new SqlParameter("@group_id", SqlDbType.Int, 4), new SqlParameter("@channel_id", SqlDbType.Int, 4), new SqlParameter("@article_id", SqlDbType.Int, 4) }; parameters[0].Value = group_id; parameters[1].Value = channel_id; parameters[2].Value = article_id; DataTable dt = DbHelperSQL.Query(strSql.ToString(), parameters).Tables[0]; if (dt.Rows.Count > 0) { return(DataRowToModel(dt.Rows[0])); } else { return(null); } }
/// <summary> /// 将对象转换实体 /// </summary> public Dapper.Model.user_group_price DataRowToModel(DataRow row) { Dapper.Model.user_group_price model = new Dapper.Model.user_group_price(); if (row != null) { //利用反射获得属性的所有公共属性 Type modelType = model.GetType(); for (int i = 0; i < row.Table.Columns.Count; i++) { //查找实体是否存在列表相同的公共属性 PropertyInfo proInfo = modelType.GetProperty(row.Table.Columns[i].ColumnName); if (proInfo != null && row[i] != DBNull.Value) { proInfo.SetValue(model, row[i], null);//用索引值设置属性值 } } } return(model); }
/// <summary> /// 增加一条数据,带事务 /// </summary> public bool Add(SqlConnection conn, SqlTransaction trans, Dapper.Model.user_group_price model, int channel_id, int article_id) { StringBuilder strSql = new StringBuilder(); //SQL字符串 StringBuilder str1 = new StringBuilder(); //数据库字段 StringBuilder str2 = new StringBuilder(); //声明参数 PropertyInfo[] pros = model.GetType().GetProperties(); List <SqlParameter> paras = new List <SqlParameter>(); strSql.Append("insert into " + databaseprefix + "user_group_price("); foreach (PropertyInfo pi in pros) { if (!pi.Name.Equals("id")) { if (pi.GetValue(model, null) != null) { str1.Append(pi.Name + ","); str2.Append("@" + pi.Name + ","); switch (pi.Name) { case "channel_id": paras.Add(new SqlParameter("@" + pi.Name, channel_id)); break; case "article_id": paras.Add(new SqlParameter("@" + pi.Name, article_id)); break; default: paras.Add(new SqlParameter("@" + pi.Name, pi.GetValue(model, null))); break; } } } } strSql.Append(str1.ToString().Trim(',')); strSql.Append(") values ("); strSql.Append(str2.ToString().Trim(',')); strSql.Append(")"); return(DbHelperSQL.ExecuteSql(conn, trans, strSql.ToString(), paras.ToArray()) > 0); }