The AppendBytes component appends the specified bytes to a file.



The AppendBytes component exposes the Control In, Control Out, Data In, and Data Out ports by default.

Port Description
ControlIn Must be connected to the Control Out port of one or more components.
ControlOut Can be connected to the Control In port of another component or the default end component.
Data In The Append Bytes component exposes the following Data In ports by default:
filePath:specifies the location of the file to which bytes are to be appended(string)
bytes:Bytes of data that have to be written to the file.
Data Out Returns status of the Append Bytes operation, True if successful and False if an error occurred. (Boolean)


To edit the properties of the AppendBytes component, in the lower-right pane, change the required property. You can edit the following properties.

Property Description
Search Search for the respective property.
Delay After Execution Specifies the wait time (in seconds) after the action is performed.
Delay Before Execution Specifies the wait time (in seconds) before the action is performed.


Let us consider an example.


To retrieve the path:

  1. In the Toolbox, expand Utilities and expand File.
  2. Drag the ReadBytes component and drop it on the Design surface.
  3. Drag the AppendBytes component and drop it on the Design surface.
  4. Double-click the filePath box and enter the required file path.
  5. Double-click the bytes box and


    You can override the existing data source for both the filePath and the bytes Data In ports. To override the existing data source:

    • Right-click the required Data In port.
    • Click Override and change the data source.
      To learn more about overriding the data source of the data port, refer the Override section.
  6. Connect the control ports in the activity.

  7. In the toolbar, click Run.