Text Editor Length

Gantt
#1

How to set length[Limit] for Text Editor in Gantt?

#2

Hello Vignesh,
There is no built-in way to set the length for the text inline editor.
But you can add that functionality by using the onEditStart start event and modifying the DOM element property:
https://snippet.dhtmlx.com/3ccedb475
Or you can create a custom inline editor:
https://snippet.dhtmlx.com/f4929774e

You can read more about inline editing in the following article:
https://docs.dhtmlx.com/gantt/desktop__inline_editing.html

If you mean something different, please give me more details about your requirement.