private void mapControl_BeforeLayerDraw(object sender, AxMapObjects2._DMapEvents_BeforeLayerDrawEvent e)
{
if (e.index == this.mapControl.Layers.Count - 1)
{
//绘制导航地图中的视图范围框线
frmNavigation.Instance.DrawMainMapViewExtent(this.mapControl.Extent);
//更新比例尺
MapUtil.MapOperation oMapOper = new MapUtil.MapOperation();
this._mapScale = oMapOper.ComputeMapScale(this.mapControl);
this.lblScale.Text = string.Format("比例尺 ： 1 : {0}", this._mapScale.ToString());
}
object oLayer = this.mapControl.Layers.Item(e.index);
int iMinScale = 0;
int iMaxScale = 0;
string[] sScales = new string[2];
if (oLayer is MapObjects2.MapLayer)
{
sScales = (oLayer as MapLayer).Tag.Split('-');
iMinScale = int.Parse(sScales[0]);
iMaxScale = int.Parse(sScales[1]);
if (iMinScale == 0 && iMaxScale == 0)
{
return;
}
if (this._mapScale >= iMinScale && this._mapScale <= iMaxScale)
{
(oLayer as MapLayer).Visible = true;
}
else
{
(oLayer as MapLayer).Visible = false;
}
}
else if (oLayer is MapObjects2.ImageLayer)
{
sScales = (oLayer as ImageLayer).Tag.Split('-');
iMinScale = int.Parse(sScales[0]);
iMaxScale = int.Parse(sScales[1]);
if (iMinScale == 0 && iMaxScale == 0)
{
return;
}
if (this._mapScale >= iMinScale && this._mapScale <= iMaxScale)
{
(oLayer as ImageLayer).Visible = true;
}
else
{
(oLayer as ImageLayer).Visible = false;
}
}
}
private void mapControl_BeforeLayerDraw(object sender, AxMapObjects2._DMapEvents_BeforeLayerDrawEvent e)
{
if (e.index == this.mapControl.Layers.Count - 1)
{
//���Ƶ�����ͼ�е���ͼ��Χ����
frmNavigation.Instance.DrawMainMapViewExtent(this.mapControl.Extent);
//���±�����
MapUtil.MapOperation oMapOper = new MapUtil.MapOperation();
this._mapScale = oMapOper.ComputeMapScale(this.mapControl);
this.lblScale.Text = string.Format("������ �� 1 : {0}", this._mapScale.ToString());
}
object oLayer = this.mapControl.Layers.Item(e.index);
int iMinScale = 0;
int iMaxScale = 0;
string[] sScales = new string[2];
if (oLayer is MapObjects2.MapLayer)
{
sScales = (oLayer as MapLayer).Tag.Split('-');
iMinScale = int.Parse(sScales[0]);
iMaxScale = int.Parse(sScales[1]);
if (iMinScale == 0 && iMaxScale == 0) return;
if (this._mapScale >= iMinScale && this._mapScale <= iMaxScale)
{
(oLayer as MapLayer).Visible = true;
}
else
{
(oLayer as MapLayer).Visible = false;
}
}
else if (oLayer is MapObjects2.ImageLayer)
{
sScales = (oLayer as ImageLayer).Tag.Split('-');
iMinScale = int.Parse(sScales[0]);
iMaxScale = int.Parse(sScales[1]);
if (iMinScale == 0 && iMaxScale == 0) return;
if (this._mapScale >= iMinScale && this._mapScale <= iMaxScale)
{
(oLayer as ImageLayer).Visible = true;
}
else
{
(oLayer as ImageLayer).Visible = false;
}
}
}
