FireDAC.Comp.DataSet.TFDDataSet.EditRangeStart

• Up to Parent: TFDDataSet

Delphi

procedure EditRangeStart;

C++

void __fastcall EditRangeStart();

Properties

Type	Visibility	Source	Unit	Parent
procedure function	public	FireDAC.Comp.DataSet.pas FireDAC.Comp.DataSet.hpp	FireDAC.Comp.DataSet	TFDDataSet

Description

Enables changing the starting value for an existing range.

Call EditRangeStart to bring the dataset to the dsSetKey state and change the starting value for an existing range. 

After the call, the application can modify indexed fields. To iterate through them, use the IndexFieldCount and IndexFields properties. Optionally, the value of the KeyFieldCount and/or KeyExclusive properties can be edited. 

After assigning a new starting value, call ApplyRange to activate the modified range.

Example

FDQuery1.IndexFieldNames := 'CUST_NO';
FDQuery1.SetRangeStart;
FDQuery1['CUST_NO'] := 100;
FDQuery1.SetRangeEnd;
FDQuery1['CUST_NO'] := 200;
FDQuery1.ApplyRange;
......
FDQuery1.EditRangeStart;
FDQuery1['CUST_NO'] := FDQuery1['CUST_NO'] + 1;
FDQuery1.ApplyRange;

See Also

• Filtering Records
• FireDAC.Comp.DataSet.TFDDataSet.ApplyRange
• FireDAC.Comp.DataSet.TFDDataSet.CancelRange
• FireDAC.Comp.DataSet.TFDDataSet.EditRangeEnd
• FireDAC.Comp.DataSet.TFDDataSet.IndexFieldNames
• FireDAC.Comp.DataSet.TFDDataSet.IndexName
• FireDAC.Comp.DataSet.TFDDataSet.KeyExclusive
• FireDAC.Comp.DataSet.TFDDataSet.SetRange
• FireDAC.Comp.DataSet.TFDDataSet.SetRangeEnd
• FireDAC.Comp.DataSet.TFDDataSet.SetRangeStart