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JAJesus Arockia Sankaran S Syncfusion Team November 21, 2018 12:21 PM UTC
Hi David,
Thank you for contacting Syncfusion support.
We have analyzed your reported issue and attached sample. In your application, you had set the column width as zero to first two columns(PhilipsID, PhilipsMatrixDataID) and if you don’t need to show those columns in TreeGrid then we can set the columns.visible property value as false.