ArcEngine 获取IMap所有图层方法

获得要素图层通过UID获取#

/// <summary>
/// 获得要素图层UID获取(第一种方法)
/// </summary>
/// <param name="pMap">IMap对象</param>
/// <returns></returns>
public List<IFeatureLayer> GetFeatureLayersUID(IMap pMap)
{
    UID uid = new UIDClass();
    uid.Value = "{40A9E885-5533-11d0-98BE-00805F7CED21}";
    IEnumLayer Layer = pMap.Layers[uid, true];
    ILayer ilayer = Layer.Next();
    //遍历地图
    while (ilayer != null)
    {
        pList.Add(ilayer as IFeatureLayer);
        ilayer = Layer.Next();
    }
    return pList;
}

---

通过IMap 递归遍历要素#

/// <summary>
/// 获得要素图层
/// </summary>
/// <param name="pMap">IMap对象</param>
/// <returns></returns>
public List<IFeatureLayer> GetFeatureLayers(IMap pMap)
{
    //遍历地图(需要递归判断)
    for (int i = 0; i < pMap.LayerCount; i++)
    {
        GetIFeatureLayer(pMap.get_Layer(i));
    }
    return pList;
}

/// <summary>
/// 执行得到所有图层
/// </summary>
/// <param name="layer">图层对象</param>
/// <returns></returns>
public void GetIFeatureLayer(ILayer layer)
{
    if (layer is IFeatureLayer)
    {
        //获得图层要素
        pFeatLayer = layer as IFeatureLayer;
        pList.Add(pFeatLayer);
    }
    else if (layer is CadAnnotationLayer)
    {
    }
    else if (layer is IRasterLayer)
    {
    }
    else if (layer is ILasDatasetLayer)
    {
    }
    else if (layer is IGroupLayer)
    {
        //遍历图层组
        pCompLayer = layer as ICompositeLayer;
        getlist(pCompLayer);
    }

}
/// <summary>
/// 递归所有图层
/// </summary>
/// <param name="pCompLayer">IGroupLayer中所有的图层</param>
/// <returns></returns>
public void getlist(ICompositeLayer pCompLayer)
{
    for (int j = 0; j < pCompLayer.Count; j++)
    {
        if (pCompLayer.get_Layer(j) is IFeatureLayer)
        {
            pFeatLayer = pCompLayer.get_Layer(j) as IFeatureLayer;
            pList.Add(pFeatLayer);
        }
        else if (pCompLayer.get_Layer(j) is IGroupLayer)
        {
            getlist(pCompLayer.get_Layer(j) as ICompositeLayer);
        }
        else if (pCompLayer.get_Layer(j) is CadAnnotationLayer)
        {
            continue;
        }
        else if (pCompLayer.get_Layer(j) is IRasterLayer)
        {
            continue;
        }
        else if (pCompLayer.get_Layer(j) is ILasDatasetLayer)
        {
            continue;
        }
    }
}