Hi gulefeng,
Thanks for your interest in Syncfusion Products.
Your requirement of disabling the Scroll bars in grid can be achieved by not specifying the width and height of the grid. In your case we suggest you not to specify the height for the grid control, this will disable the vertical scrollbar. Please refer below code snippet.
[Aspx Page]
AutoFormat="Vista" PageSize="12" >
Please note that in the above code height and width are not specified to disable the scroll bars. If the height and width are specified scrollbars will be shown if necessary.
For you convenience we created a sample. The sample can be download from the following link.
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=GRID_SCROLLBAR2-110113771.zipPlease let us know if it helps.
Regards,
Manickam