Place data from the datagridview control to the Treeview control [reprint]

How to import data from the datagridview control to the Treeview control and enable the control in the mousedown event of the datagridview.
Then, you can receive and place data in the dragenter of the Treeview.
Finally, the result is processed in dragdrop of the Treeview.
Note: Set the allowdrop attribute of Treeview to true.
: 1 private void maid (Object sender, mouseeventargs E)
2 {
3 if (E. Button = mousebuttons. Right)
4 {
5 datagridview. hittestinfo info = maid (E. X, E. y );
6
7 if (info. rowindex> = 0)
8 {
9 datagridviewrow DR = (datagridviewrow)
10 datagridview1.rows [info. rowindex];
11 if (Dr! = NULL)
12 datagridview1.dodragdrop (DR, dragdropeffects. copy );
13}
14}
15}
16
17 private void treeviewincludragenter (Object sender, drageventargs E)
18 {
19 E. effect = dragdropeffects. copy;
20}
21
22 private void treeviewincludragdrop (Object sender, drageventargs E)
23 {
24 if (E. Data. getdatapresent (typeof (datagridviewrow )))
25 {
26 point P = treeview1.pointtoclient (new point (E. X, E. y ));
27 treeviewhittestinfo Index = treeview1.hittest (P );
28
29 If (index. node! = NULL)
30 {
31
32 datagridviewrow DRV = (datagridviewrow) E. Data. getdata (typeof (datagridviewrow ));
33 index. node. Text = "Drop:" + DRV. cells [0]. tostring ();
34
35}
36}
37} Implementation Method: In the mousedown event of the datagridview.
Then, you can receive and place data in the dragenter of the Treeview.
Finally, the result is processed in dragdrop of the Treeview.
Note: Set the allowdrop attribute of Treeview to true.
: 1 private void maid (Object sender, mouseeventargs E)
2 {
3 if (E. Button = mousebuttons. Right)
4 {
5 datagridview. hittestinfo info = maid (E. X, E. y );
6
7 if (info. rowindex> = 0)
8 {
9 datagridviewrow DR = (datagridviewrow)
10 datagridview1.rows [info. rowindex];
11 if (Dr! = NULL)
12 datagridview1.dodragdrop (DR, dragdropeffects. copy );
13}
14}
15}
16
17 private void treeviewincludragenter (Object sender, drageventargs E)
18 {
19 E. effect = dragdropeffects. copy;
20}
21
22 private void treeviewincludragdrop (Object sender, drageventargs E)
23 {
24 if (E. Data. getdatapresent (typeof (datagridviewrow )))
25 {
26 point P = treeview1.pointtoclient (new point (E. X, E. y ));
27 treeviewhittestinfo Index = treeview1.hittest (P );
28
29 If (index. node! = NULL)
30 {
31
32 datagridviewrow DRV = (datagridviewrow) E. Data. getdata (typeof (datagridviewrow ));
33 index. node. Text = "Drop:" + DRV. cells [0]. tostring ();
34
35}
36}
37}