mapxtreme最新版_mapxtreme_mapxtreme 售价

1 设置图层可选状态

/**//// <summary>

/// 改变层的可选择状态

/// </summary>

/// <param></param>

/// <returns></returns>

public bool LayerSelectableStatusUpdate(string tableAlias,bool selectableStatus)

{

if(mapControl1.Map.Layers[tableAlias]==null)

return false;

MapInfo.Mapping.LayerHelper.SetSelectable(mapControl1.Map.Layers[tableAlias],selectableStatu

s);

return true;

}

2 设置层的可用状态

/**//// <summary>

/// 改变层的可用状态为status

/// </summary>

/// <param></param>

/// <param></param>

public void LayerEnableStatusUpdate(string layerName,bool status)

{

if(mapControl1.Map.Layers[layerName]!=null && mapControl1.Map.Layers[layerName].Enabled!

=status)

{

mapControl1.Map.Layers[layerName].Enabled=status;

}

}

3 层居中，看全图

/**//// <summary>

/// 使指定层全部呈现在地图的可见范围中

/// </summary>

/// <param>层别名</param>

public void LayerCenter(string layerName)

{

MapInfo.Data.Table[] tables=new MapInfo.Data.Table[1];

tables[0] = MapInfo.Engine.Session.Current.Catalog.GetTable(layerName);

if(tables[0]==null)

return;

if(mapControl1.Map.Layers[layerName]==null)

return;

if(mapControl1.Map.Layers[layerName].Enabled == false)

mapControl1.Map.Layers[layerName].Enabled = true;

MapInfo.Mapping.IMapLayerFilter iMapLayerFilter =

MapInfo.Mapping.MapLayerFilterFactory.FilterByTable(tables);

MapInfo.Mapping.MapLayerEnumerator mapLayerEnumerator =

mapControl1.Map.Layers.GetMapLayerEnumerator(iMapLayerFilter);

mapControl1.Map.SetView(mapLayerEnumerator);

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