Gridcontrol dynamic binding data sources, to draw the checkbox in the first column, has also increased the header checkbox, selection and cancel all, but now need to increase fast box similar to excel operation (or sometimes hundreds of lines of data query, not future generations, chose the one hundred lines, each box is too slow), how to do it like excel can hold down the CTRL key and the mouse down, automatically check the line, or hold down the shift key, click on a row, and then click on another line, will be two line in the middle of the line to check,