Class TrDBGridCustomSorter

Unit

rDBGrid

Declaration

type TrDBGridCustomSorter = class(TComponent)

Description

define base Sorter component for dataset sorting; must be used as based class for any other dataset sorter

Hierarchy

• TComponent
• TrDBGridCustomSorter

Overview

Methods

	function DoSort(Sender: TrDBGrid; DataSet: TDataSet; SortFieldNames: TSortFieldNames; SortDirections: TSortDirections): boolean; virtual;
	procedure DoRefresh(Sender: TrDBGrid; DataSet: TDataSet); virtual;

Properties

	property GoToFirstAfterSort: boolean read FGoToFirstAfterSort write FGoToFirstAfterSort default false;
	property GoToFirstAfterRefresh: boolean read FGoToFirstAfterRefresh write FGoToFirstAfterRefresh default false;

Description

Methods

	function DoSort(Sender: TrDBGrid; DataSet: TDataSet; SortFieldNames: TSortFieldNames; SortDirections: TSortDirections): boolean; virtual;
virtual procedure provide sorting, calls SetSort_CreateIndex to sort dataset

	procedure DoRefresh(Sender: TrDBGrid; DataSet: TDataSet); virtual;
virtual procedure provide refreshing of dataset, calls DatasetRequery

Properties

	property GoToFirstAfterSort: boolean read FGoToFirstAfterSort write FGoToFirstAfterSort default false;
define selecting of first record after sorting

	property GoToFirstAfterRefresh: boolean read FGoToFirstAfterRefresh write FGoToFirstAfterRefresh default false;
define selecting of first record after refresh