public void ShowFeature(Predicate <System.Data.DataRow> p = null)
{
List <SharpMap.Geometries.Geometry> geometries = new List <SharpMap.Geometries.Geometry>();
m_shapeFileData.Open();
for (uint i = 0; i < m_shapeFileData.GetFeatureCount(); ++i)
{
SharpMap.Data.FeatureDataRow featureDataRow = m_shapeFileData.GetFeature(i);
if (p == null || p(featureDataRow))
{
geometries.Add(m_shapeFileData.GetGeometryByID(i));
}
}
m_shapeFileData.Close();
m_shapeLayer.DataSource = new GeometryFeatureProvider(geometries);
if (myMap.Layers.IndexOf(m_shapeLayer) == -1)
{
myMap.Layers.Add(m_shapeLayer);
}
//myMap.ZoomToExtents();
}