/// <summary>
/// 摘要:
/// 数据分页
/// 参数：
/// sql：传入要执行sql语句
/// param：参数化
/// orderField：排序字段
/// orderType：排序类型
/// pageIndex：当前页
/// pageSize：页大小
/// return (count, resultlist)
/// </summary>
public static async Task <Tuple <int, DataTable> > GetPageTableAsync(string sql, DbParameter[] param, string orderField, string orderType, int pageIndex, int pageSize)
{
StringBuilder strSql = new StringBuilder();
if (pageIndex == 0)
{
pageIndex = 1;
}
int num = (pageIndex - 1) * pageSize;
int num1 = (pageIndex) * pageSize;
string OrderBy = "";
if (!string.IsNullOrEmpty(orderField))
{
OrderBy = "Order By " + orderField + " " + orderType + "";
}
else
{
OrderBy = "Order By (select 0)";
}
strSql.Append("Select * From (Select ROW_NUMBER() Over (" + OrderBy + ")");
strSql.Append(" rowNumber, T.* From (" + sql + ") T ) N Where rowNumber > " + num + " And rowNumber <= " + num1 + "");
int count = Convert.ToInt32(await DbHelperAsync.ExecuteScalar(CommandType.Text, "Select Count(1) From (" + sql + ") t", param));
DbDataReader dr = await DbHelperAsync.ExecuteReader(CommandType.Text, strSql.ToString(), param);
DataTable dt = await DatabaseReader.ReaderToDataTableAsync(dr);
return(new Tuple <int, DataTable>(count, dt));
}
public static async Task <Tuple <int, List <T> > > GetPageListAsync <T>(string sql, DbParameter[] param, string OrderBy, int pageIndex, int pageSize)
{
try
{
StringBuilder strSql = new StringBuilder();
if (pageIndex == 0)
{
pageIndex = 1;
}
int num = (pageIndex - 1) * pageSize;
int num1 = (pageIndex) * pageSize;
strSql.Append("Select * From (Select ROW_NUMBER() Over (" + OrderBy + ")");
strSql.Append(" rowNumber, T.* From (" + sql + ") T ) N Where rowNumber > " + num + " And rowNumber <= " + num1 + "");
int count = Convert.ToInt32(await DbHelperAsync.ExecuteScalar(CommandType.Text, "Select Count(1) From (" + sql + ") t", param));
DbDataReader dr = await DbHelperAsync.ExecuteReader(CommandType.Text, strSql.ToString(), param);
List <T> resultlst = await DatabaseReader.ReaderToList <T>(dr);
return(new Tuple <int, List <T> >(count, resultlst));
}
catch (Exception ex)
{
throw;
}
}
