public static MDataTable[] Split(MDataTable table, object whereObj)
{
MDataTable[] mdt2 = new MDataTable[2];
mdt2[0] = table.GetSchema(false);
mdt2[1] = table.GetSchema(false);
if (table.Rows.Count > 0)
{
if (Convert.ToString(whereObj).Trim() == "")
{
mdt2[0] = table;
}
else
{
List <TFilter> group2 = null;
List <TFilter> filters = GetTFilter(whereObj, table.Columns, out group2);
if (filters.Count > 0)
{
for (int i = 0; i < table.Rows.Count; i++)
{
MDataRow row = table.Rows[i];
if (CompareMore(row, filters) && (group2.Count == 0 || CompareMore(row, group2)))
{
mdt2[0].Rows.Add(row, false);
}
else
{
mdt2[1].Rows.Add(row, false);
}
}
}
}
}
return(mdt2);
}
public static MDataTable[] Split(MDataTable table, object whereObj)
{
MDataTable[] mdt2 = new MDataTable[2];
mdt2[0] = table.GetSchema(false);
mdt2[1] = table.GetSchema(false);
if (table.Rows.Count > 0)
{
if (Convert.ToString(whereObj).Trim() == "")
{
mdt2[0] = table;
}
else
{
TFilter[] filters = GetTFilter(whereObj, table.Columns);
if (filters.Length > 0)
{
for (int i = 0; i < table.Rows.Count; i++)
{
MDataRow row = table.Rows[i];
if (CompareMore(row, filters))
{
mdt2[0].Rows.Add(row, false);
}
else
{
mdt2[1].Rows.Add(row, false);
}
}
}
}
}
return(mdt2);
}
public static MDataTable Select(MDataTable table, int pageIndex, int pageSize, object whereObj, params object[] selectColumns)
{
if (table == null)
{
return(null);
}
MDataTable sTable = table.GetSchema(true);
sTable.RecordsAffected = table.Rows.Count;
if (table.Rows.Count == 0) // 正常情况下，看是否需要处理列移除
{
FilterColumns(ref sTable, selectColumns); //列查询过滤
return(sTable);
}
MDataRowCollection findRows = FindAll(table, whereObj);
if (findRows != null)
{
sTable.RecordsAffected = findRows.Count; //设置记录总数
FilterPager(findRows, pageIndex, pageSize); //进行分页筛选，再克隆最后的数据。
for (int i = 0; i < findRows.Count; i++)
{
if (i < findRows.Count)//内存表时（表有可能在其它线程被清空）
{
MDataRow row = findRows[i];
if (row == null)
{
break;
}
sTable.NewRow(true).LoadFrom(row);
}
}
findRows = null;
}
if (selectColumns != null && selectColumns.Length > 0)
{
FilterColumns(ref sTable, selectColumns);//列查询过滤，由于查询的条件可能包含被移除列，所以只能在最后才过滤
}
//进行条件查询
return(sTable);
}
public static MDataTable[] Split(MDataTable table, object whereObj)
{
MDataTable[] mdt2 = new MDataTable[2];
mdt2[0] = table.GetSchema(false);
mdt2[1] = table.GetSchema(false);
if (table.Rows.Count > 0)
{
if (Convert.ToString(whereObj).Trim() == "")
{
mdt2[0] = table;
}
else
{
TFilter[] filters = GetTFilter(whereObj, table.Columns);
if (filters.Length > 0)
{
foreach (MDataRow row in table.Rows)
{
if (CompareMore(row, filters))
{
mdt2[0].Rows.Add(row, false);
}
else
{
mdt2[1].Rows.Add(row, false);
}
}
}
}
}
return mdt2;
}
public static MDataTable Select(MDataTable table, int pageIndex, int pageSize, object whereObj, params object[] selectColumns)
{
if (table == null)
{
return null;
}
MDataTable sTable = table.GetSchema(true);
sTable.RecordsAffected = table.Rows.Count;
if (table.Rows.Count == 0)// 正常情况下，看是否需要处理列移除
{
FilterColumns(ref sTable, selectColumns);//列查询过滤
return sTable;
}
List<MDataRow> findRows = FindAll(table, whereObj);
if (findRows != null)
{
FilterPager(findRows, pageIndex, pageSize);//进行分页筛选，再克隆最后的数据。
foreach (MDataRow mr in findRows)
{
sTable.NewRow(true).LoadFrom(mr);
}
findRows = null;
}
if (selectColumns != null && selectColumns.Length > 0)
{
FilterColumns(ref sTable, selectColumns);//列查询过滤，由于查询的条件可能包含被移除列，所以只能在最后才过滤
}
//进行条件查询
return sTable;
}
