Wince slide up and down to browse data

Use the mousedown and mousemove events of the DataGrid to simulate the sliding browsing effect. Int X = 0 , Y = 0 ;
Private Void Datagrid_mousedown ( Object Sender, mouseeventargs E)
{
X = E. X;
Y = E. Y;
}
Private Void Datagrid_mousemove ( Object Sender, mouseeventargs E)
{
Try
{
Int YY = 0 ;
// The difference between the Y coordinate value of the current mouse and the Y value starting from sliding gives the DataGrid the moving distance between the up and down.
YY = E. Y-Y;
// The 25 value is the high value of the row in the DataGrid, based on the number of sliding lines given by distance
YY = YY/ 25 ;
This . Currentrowindex = This . Currentrowindex + YY;
}
Catch
{}
}