Hi David,
Thanks for your interest in Syncfusion products,
In EditControl the CurrentLineText is used for many operations. Hence when we use that it will take some time to process all the operations related to that when it is used. But GetLineText gets only the text of the given line and its not involved in any other operations and hence its execution is faster compared to CurrentLineText. Thanks for your update regarding this.
Please let us know if you have any concerns.
Regards,
Paul Anderson S