ArcEngine中使用上下左右键移动地图

axMapControl1.KeyIntercept = 1;
private void axMapControl1_OnKeyDown(object sender, ESRI.ArcGIS.MapControl.IMapControlEvents2_OnKeyDownEvent e)

{

switch (e.keyCode)

{

case (int)System.Windows.Forms.Keys.Up:

PanMap(0d, 0.5d);

break;

case (int)System.Windows.Forms.Keys.Down:

PanMap(0d, -0.5d);

break;

case (int)System.Windows.Forms.Keys.Left:

PanMap(-0.5d, 0d);

break;

case (int)System.Windows.Forms.Keys.Right:

PanMap(0.5d, 0d);

break;

}

}

private void PanMap(double ratioX, double ratioY)

{

//Pans map by amount specified given in a fraction of the extent e.g. rationX=0.5, pan right by half a screen

IEnvelope envelope = axMapControl1.Extent;

double h = envelope.Width;

double w = envelope.Height;

envelope.Offset(h * ratioX, w * ratioY);

axMapControl1.Extent = envelope;

}