Data.DB.TDataSet.FindNext

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Delphi

function FindNext: Boolean;

C++

bool __fastcall FindNext();

Properties

Type	Visibility	Source	Unit	Parent
function	public	Data.DB.pas Data.DB.hpp	Data.DB	TDataSet

Description

Implements a virtual method for positioning the dataset on the next record, respecting any filters.

FindNext is intended to be used together with FindFirst, FindLast and FindPrior in order to search for the next record using any filters. See the example.

Notes:

• This function is not implemented for TFDTable Live Data Windows mode.
• To conventionally navigate through a dataset use First, Last, Next and Prior.

Descendant classes override FindNext to move to the next record of the dataset, honoring any filters that are in effect. In descendants, FindNext returns:

• True -- if the active record is successfully changed.
• False -- if the active record is not successfully changed.

Example

Here is a code snippet that shows how to use FindFirst and FindNext to search for a record using a filtering expression:

Delphi:

FDQuery1.Filter := 'amount >= 10000';
if FDQuery1.FindFirst then
   repeat
    // do something
   until not FDQuery1.FindNext;

C++:

FDQuery1->Filter="amount >= 10000";
if (FDQuery1->FindFirst()){
   do {
    // do something
   }
   while (FDQuery1->FindNext());
}

See Also

• Data.DB.TDataSet.Filter
• Data.DB.TDataSet.Filtered
• Data.DB.TDataSet.OnFilterRecord
• Data.DB.TDataSet.FindFirst
• Data.DB.TDataSet.FindLast
• Data.DB.TDataSet.FindPrior
• Data.DB.TDataSet.Next
• Navigating Records in a Filtered Dataset