/// <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);
}
