MKMahalakshmi Karthikeyan Syncfusion Team September 14, 2015 11:43 AM UTC
Thanks for contacting Syncfusion support.
In TreeGrid, the Horizontal scroll bar appears and disappears depending on the width of TreeGrid, by default. You don’t have to enable or disable it. Here, we have prepared a sample with 8 columns and TreeGrid width as “450px”. You can find the sample under the following location.