Hi Haishi,
Try handling the QueryCellStyleInfo event to set the ImageIndex to the cells of a column based on the cellvalue and also handle the TableControlDrawCellDisplayText event to cancel the drawing of text in those cells. In addition to these events you need to handle the QueryColWidth event to set the width of that column to the width of the image/icon.
Please refer to this sample.
http://websamples.syncfusion.com/samples/Grid.Windows/34844/main.htmRegards,
Saravanan