cxExportTLToTextStream(TStream,TcxCustomTreeList,Boolean,Boolean,TObject,TEncoding) Method

Exports content of a tree list control to a stream in plain text format.

Declaration

delphi

procedure cxExportTLToTextStream(AStream: TStream; ATreeList: TcxCustomTreeList; AExpand: Boolean; ASaveAll: Boolean = True; AHandler: TObject = nil; AEncoding: TEncoding = nil);

Parameters

Name	Type	Description
AStream	TStream

The target stream.

| | ATreeList | TcxCustomTreeList |

The source tree list control.

| | AExpand | Boolean |

Optional. Specifies if all source tree list nodes are expanded:

True Default. The procedure exports all rows, including the rows hidden within collapsed tree list nodes.FalseThe procedure exports only visible rows. | | ASaveAll | Boolean |

Optional. Specifies if the procedure exports all available rows:

True Default. The procedure exports all or only visible rows depending on the AExpand parameter value.FalseThe procedure exports only selected rows. | | AHandler | TObject |

Optional. Specifies a handler object that should implement the IcxExportBeforeSave and/or IcxExportProgress interfaces to allow you to perform specific actions before the beginning of an export operation and track its progress.

Tip

Refer to the following topic for detailed information on how to create and use handler objects:

How to: Track Data Export Progress

| | AEncoding | TEncoding |

Optional. Specifies the character encoding format of the resulting CSV stream.

If nil (in Delphi) or nullptr (in C++Builder) is passed as the AEncoding parameter ( default ), the procedure uses the TEncoding.Default encoding.

Remarks

Call the cxExportTLToTextStream procedure to export the tree list control’s content to a stream in plain text format. This format stores data without formatting, style, or print layout information. Compared to CSV, exported TXT files are more human-readable.

Code Example: Export Tree List Content to a TXT Stream

The following code example exports tree list content to a file in Text format:

Delphi
C++

delphi

uses cxTLExportLink;
// ...
var
  AStream: TMemoryStream;
begin
  AStream := TMemoryStream.Create;
  cxExportTLToTextStream(AStream, cxDBTreeList);
  AStream.SaveToFile('Departments.txt');
  AStream.Free;
end;

cpp

#include "cxTLExportLink.hpp"  
// ...
  TMemoryStream *AStream = nullptr;
  // ...
  AStream = new TMemoryStream();
  cxExportTLToTextStream(AStream, cxDBTreeList);
  AStream->SaveToFile("Departments.txt");
  delete AStream;

The following image demonstrates the exported content of a memory stream when it is saved to a file: