list<t> paging mode, generic paging mode

From: Http://blog.csdn.net/soulscarrier

Protected list Listpager (list DataSource, int currentpageindex, int PageSize, string filterexpression, ref int count)

{

Count = 0;

if (DataSource = = NULL | | Datasource.count = = 0)

return DataSource;

Count = Datasource.count;

if (string. IsNullOrEmpty (FilterExpression))

{

int startIndex = CurrentPageIndex * PageSize;

if (StartIndex + PageSize > Datasource.count)

{

PageSize = Datasource.count-startindex;

}

Return Datasource.getrange (StartIndex, PageSize);

}

Else

{

DataTable dt = KingLib.DataHelper.ListToDataTable (DataSource);

DataView dv = dt. DefaultView;

Dv. RowFilter = FilterExpression;

List Newdatasource = KingLib.DataHelper.DataTableToList (dv. ToTable ());

Count = Newdatasource.count;

int startIndex = CurrentPageIndex * PageSize;

if (StartIndex + PageSize > Newdatasource.count)

{

PageSize = Newdatasource.count-startindex;

}

Return Newdatasource.getrange (StartIndex, PageSize);

}

}

list<t> paging mode, generic paging mode