keyTMS ALL-ACCESS
local_offerOne money and time saving bundle
mouseCross Platform UI
bar_chartReporting
languageWeb
swap_horizCommunication
storageData
mouseWindows UI
  •  
  •  
  •  
  1. Home
  2. Products
  3. VCL Components
  4. TAdvStringGrid
  5. Example 65

TAdvStringGrid

Example 65 : Using TAdvGridCSVPager for using large CSV files with paging

vcl grid

TAdvGridCSVPager is a component that allows to work with CSV files in a paged way. That means that instead of loading the CSV file completely in the grid, you can browse & edit through the CSV file per page with a configurable page size. This offers a faster and less memory intensive solution to handle very large CSV files.

Using TAdvGridCSVPager is simple. It is a separate component that can be connected to the TAdvStringGrid (or descendent) component so when it is not used, it does not add any overhead to TAdvStringGrid. You can set the grid property for TAdvGridCSVPager component and use the TAdvGridCSVPager methods & properties to work with CSV files in pages.

Properties & methods in TAdvGridCSVPager: 

Open
Opens the CSV file set by the property 
FileName


Close
Closes the CSV file 


SavePage
Saves the current viewed 
page in the grid to the CSV file


First
Show the first page of the CSV file in 
the grid


Last
Show the last page of the CSV file in 
the grid


Next
Show the next page of the CSV file in 
the grid


Prev
Show the previous page of the CSV file 
in the grid


IsOpen: boolean
Returns true when the AdvGridCSVPager 
has a CSV file opened


FirstRow: integer
Returns the row number in the CSV file 
of the first row displayed in the grid


LastRow: integer
Returns the row number in the CSV file 
of the last row displayed in the grid


TotalRows: integer
Returns the total number of rows in 
the CSV file


Pages: integer
Returns the total nr. of pages in the 
CSV file


Page: integer
Returns the page number of the current 
displayed page in the grid


BOF: boolean
Returns true when the first page of 
the CSV file is reached


EOF: boolean
Returns true when the last page of the 
CSV file is reached

The sample application shows how 4 buttons to browse through a CSV file are used. With a minimal amount of code, this simple paged CSV browser was created.

Delphi project & source files for downloading included in the main demos distribution for Delphi.