Public ReadOnly Property OverlayCount As Integer

Visual Basic (Usage)	Copy Code
Dim instance As DicomDataSet Dim value As Integer   value = instance.OverlayCount

public int OverlayCount {get;}

public: __property int get_OverlayCount();

public:
property int OverlayCount {
   int get();
}

Return Value

This example will read a DICOM dataset and update its overlay attributes and overlay image.

Visual Basic

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Public Sub TestOverlay()   Dim dicomFileName As String = "C:\Program Files\LEAD Technologies, Inc\LEADTOOLS 14.5\Images\Overlay.dic"   'Make sure to initialize the DICOM engine, this needs to be done only once   'In the whole application   DicomEngine.Startup()   Dim ds As DicomDataSet = New DicomDataSet()     Using (ds)        'Load DICOM File        ds.Load(dicomFileName, DicomDataSetLoadFlags.None)        If ds.OverlayCount > 0 Then           Dim attributes As RasterOverlayAttributes = ds.GetOverlayAttributes(0)           If Not attributes Is Nothing Then              ' We can call in here methods like GetOverlayGroupNumber, IsOverlayInDataset              ' and GetOverlayActivationLayer to get some further infromation about the overlay              'Let�s get the overlay Image, If RasterOverlayAttributes.NumFramesInOverlay              'Is greater than 1 we can call GetOverlayImages to extract all the frames              Dim overlayImage As RasterImage = ds.GetOverlayImage(0)              If Not overlayImage Is Nothing Then                 Dim ds1 As DicomDataSet = New DicomDataSet()                 Using (ds1)                    ds1.Initialize(DicomClassType.DXImageStoragePresentation, DicomDataSetInitializeType.ExplicitVRLittleEndian)                    ds1.SetOverlayAttributes(0, attributes, DicomSetOverlayFlags.None)                    ds1.SetOverlayImage(0, overlayImage) 'We can call SetOverlayImages if the overlay has more than one frame                    ds1.Save("C:\NewOverlay.dcm", DicomDataSetSaveFlags.None)                 End Using              End If           End If        End If     End Using     DicomEngine.Shutdown()  End Sub

C#

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public void TestOverlay()  {     string dicomFileName = @"C:\Program Files\LEAD Technologies, Inc\LEADTOOLS 14.5\Images\Overlay.dic";     //Make sure to initialize the DICOM engine, this needs to be done only once      //In the whole application     DicomEngine.Startup();     using (DicomDataSet ds = new DicomDataSet())     {        //Load DICOM File        ds.Load(dicomFileName, DicomDataSetLoadFlags.None);          if (ds.OverlayCount > 0)        {           RasterOverlayAttributes attributes = ds.GetOverlayAttributes(0);           if (attributes != null)           {              // We can call in here methods like GetOverlayGroupNumber, IsOverlayInDataset               // and GetOverlayActivationLayer to get some further infromation about the overlay                //Let�s get the overlay Image, If RasterOverlayAttributes.NumFramesInOverlay               //Is greater than 1 we can call GetOverlayImages to extract all the frames              RasterImage overlayImage = ds.GetOverlayImage(0);              if (overlayImage != null)              {                 using (DicomDataSet ds1 = new DicomDataSet())                 {                    ds1.Initialize(DicomClassType.DXImageStoragePresentation, DicomDataSetInitializeType.ExplicitVRLittleEndian);                    ds1.SetOverlayAttributes(0, attributes, DicomSetOverlayFlags.None);                    ds1.SetOverlayImage(0, overlayImage);//We can call SetOverlayImages if the overlay has more than one frame                    ds1.Save(@"C:\NewOverlay.dcm", DicomDataSetSaveFlags.None);                 }              }           }        }     }     DicomEngine.Shutdown();  }

Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

Reference