Click a column header/band header and drag it onto the grid control’s cell area, until the cursor changes its image to a big ‘X’. Then drop the header.
or Drag and drop a column/band header onto the Customization Form if it’s open
Open the Customization Form by right-clicking a column header and selecting Column Chooser.
The Customization Form will be displayed listing hidden columns and bands (if any).
Drag the required column/band from the Customization Form onto the column/band header panel and drop it at a specific position.