Manual > Control Reference > Basics > Grid control > Functionality Description > Grid Paging and Filtering

Source Data and Display Data

The grid data includes "Source Data"and"Display Data" These are closely related to the filtering and paging features of Grid control.

Source data is all the data that the grid has.

Below is an example of an unfiltered grid view: With no filtering or paging, the grid will display all of the source data.

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On the other hand, display data is the data that is displayed on the grid as a result of filtering and paging operations.

Below is an example of the filter function's search filter (SearchFilter method) narrowing down the previous grid to the keyword "abc". Only the three rows of data that match the search criteria are displayed as display data.

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Display data index

An index is a number that points to a cell's location in a grid.

The index to the grid's source data is simply calledIndex"It is called "

The index for the grid's display data is calledDisplay Index"It is called "

If no filtering or paging is in effect, the source data and display data have the same index..

Please note that among the various methods provided by Grid control, there are methods that operate on display data and methods that operate on source data.

■ Methods that process display data

The following methods operate on display data.

Methods	explanation
GetDisplayRows / GetDisplayCols	Returns the number of rows/columns of display data displayed in the grid.
DisplayRowToRow / DisplayColToCol	Specify a display index and get the corresponding source data index.
GetSelectedRow / GetSelectedRows / GetSelectedCol / GetSelectedCols / GetSelectedCell	Gets the position of the selected cell by display index.
IsSelectedRow / IsSelectedCol / IsSelectedCell / SelectCell	Specify the target cell position by display index.
ScrollCell	Specifies the cell scrolling parameters by display index.
GetFirstVisibleRow /GetFirstVisibleCol	Gets the display position of the scrolled cell by display index.
Copy / Paste / Cut	Specify the position of the cell to be processed by the display index.
GetTableData	Specify the position of the cell to be processed by the display index.
Print	The display data currently shown in the grid will be printed.
SaveCsvFile	The argument specifies whether it is display data or source data (default is source data).

■Methods in which processing is performed on source data

Methods other than those listed above operate on the source data.

for example,SetData / SetCellPropertyMethods such as , must be called by passing the index of the source data as an argument.

So if filtering or paging is in effect on the grid:DisplayRowToRow / DisplayColToColBe sure to obtain the index of the source data using a method before passing it.