private void EagleMapControl_OnMouseMove(object sender, IMapControlEvents2_OnMouseMoveEvent e) //鹰眼图：左键拖动矩形框
{
// 如果不是左键按下就直接返回
if (e.button != 1)
{
return;
}
EagleMapControl.MousePointer = esriControlsMousePointer.esriPointerSizeAll;
IPoint point = new PointClass();
point.PutCoords(e.mapX, e.mapY);
MapControl.CenterAt(point);
EagleMapControl.CenterAt(point);
MapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
EagleMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}