onBeforeEdit: function (row) {

                let options = $(this).treegrid('options');

                options.tempeditor = options.tempeditor || {};

                let getColumnOption = $(this).treegrid('getColumnOption', 'sampleTypeId');

                if (!options.tempeditor["sampleTypeId"]) {

                    options.tempeditor["sampleTypeId"] = getColumnOption.editor;

                }

                if (row.parentId) {

                    getColumnOption.editor = undefined;

                } else {

                    getColumnOption.editor = options.tempeditor["sampleTypeId"];

                }

            }