| Object Reference > True DBGrid Methods > RefetchCol Method |
RefetchCol Method
The RefetchCol method repopulates the specified column from a data source control and/or unbound events.
TDBGrid.RefetchCol [index]
Arguments
index is an optional variant that specifies the column to refetch. If not specified, the current column is assumed. If specified, it must be a valid column number or name.
Return Value
None
It also repaints the column's visible cells, firing all events necessary for redisplay.
By default, the grid retrieves data automatically as needed. It fetches rows in blocks of ten, and only gathers data for visible columns. However, in some cases, you can improve performance by fetching only the data for a single (changed) column. The RefetchCol method is provided for this purpose.
Note
The RefetchCol method does not force the data source control to refresh its own data from the underlying database. You must use data control methods or options to accomplish this.