/// <summary>
/// دیتای جدول مدل را بر میگرداند
/// </summary>
/// <typeparam name="B"></typeparam>
/// <returns></returns>
public virtual IDataTable GetDataTable(T p)
{
using (var db = new EngineContext())
{
var dt = db.Set <T>();
db.Configuration.ProxyCreationEnabled = false;
// var dt = Search(p, set.ToList().AsQueryable());
IDataTable dataTable = new ObjectDataTable <T>
{
Records = dt,
RecordsList = dt.ToList(),
Headers = GetPropertyNames <T>()
};
db.Configuration.ProxyCreationEnabled = true;
return(dataTable);
}
}
/// <summary>
/// Combines polygons with polygons and keeps all geometry. Union acts
/// like the Boolean OR operation and can be used only with polygons.
/// </summary>
/// <param name="sourceTopologyName">[in] The source topology name.</param>
/// <param name="overlayTopologyName">[in] The overlay topology name.</param>
/// <returns>
/// Returns true if successful.
/// </returns>
//�������Ϊ�����Ӷ�������˺͵��Ӷ��������
private bool Union(string sourceTopologyName, string overlayTopologyName)
{
// ��������ģ�Ͷ���
TopologyModel sourceTopology = null;
// �����������ݶ���
OverlayDataCollection sourceDataCollection = null;
MapApplication mapApp = HostMapApplicationServices.Application;
//��ȡ��ǰ���̵�����ģ��
Topologies topos = mapApp.ActiveProject.Topologies;
// Does the Source Topology exist to get information from
//�жϴ���������ģ���Ƿ����
if (topos.Exists(sourceTopologyName))
{
sourceTopology = topos[sourceTopologyName];
}
else
{
Utility.AcadEditor.WriteMessage(string.Format("\nERROR: The topology {0} doesn't exist.", sourceTopologyName));
return false;
}
// �������Ӷ��������ģ�Ͷ���
TopologyModel overlayTopology = null;
// �����������ݶ���
OverlayDataCollection overlayDataCollection = new OverlayDataCollection();
string expression = "";
expression = string.Format(":AREA@TPMCNTR_{0}", overlayTopologyName);
OverlayData data = new OverlayData(expression, "PolygonArea", Autodesk.Gis.Map.Constants.DataType.Real);
overlayDataCollection.Add(data);
// �жϵ�������ģ���Ƿ����
if (topos.Exists(overlayTopologyName))
{
overlayTopology = topos[overlayTopologyName];
}
else
{
Utility.AcadEditor.WriteMessage(string.Format("\nERROR: The topology {0} doesn't exist.", overlayTopologyName));
return false;
}
try
{
// ��Դ����ģ�ͣ�����ȡ
sourceTopology.Open(Autodesk.Gis.Map.Topology.OpenMode.ForRead);
// ��������ģ�ͣ�����ȡ
overlayTopology.Open(Autodesk.Gis.Map.Topology.OpenMode.ForRead);
// ���ýڵ㴴������
PointCreationSettings nodeCreationSettings = new PointCreationSettings(
"result", // layer name
1, // color, by layer
true, // create new node
"ACAD_POINT"); // block name
//���ýڵ㴴��
sourceTopology.SetNodeCreationSettings(nodeCreationSettings);
//�����˵�����
string newTopologyName = "Result";
//�����˵�����
string newTopologyDesc = "Result topology of an Union operation";
//���������˵Ķ������ݱ�
ObjectDataTable resultDataTable = new ObjectDataTable();
resultDataTable.ODTableName = "UnionResult";
resultDataTable.ODTableDescription = "The result of the Union Overlay";
// ��
sourceTopology.Union(overlayTopology,
newTopologyName,
newTopologyDesc,
resultDataTable,
sourceDataCollection,
overlayDataCollection);
TopologyModel newTopology = topos[newTopologyName];
newTopology.Open(Autodesk.Gis.Map.Topology.OpenMode.ForRead);
newTopology.ShowGeometry(5);
newTopology.Close();
return true;
}
catch (MapException e)
{
if (2001 == e.ErrorCode)
{
Utility.AcadEditor.WriteMessage("\nERROR: Topology Result already exists.");
}
else
{
Utility.AcadEditor.WriteMessage(string.Format("\nERROR: Operation failed with error code: {0}.", e.ErrorCode));
}
return false;
}
finally
{
// Close the topologys
sourceTopology.Close();
overlayTopology.Close();
}
}
