DicomObjects.NET8 Documentation
DicomObjects Namespace / DicomContext Class / ExtendedNegotiationValues Property



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    ExtendedNegotiationValues Property
    In This Topic
    Used to negotiate extended information about a SOP class
    Syntax
    'Declaration
     
    
    Public Property ExtendedNegotiationValues As Byte()
    'Usage
     
    
    Dim instance As DicomContext
    Dim value() As Byte
     
    instance.ExtendedNegotiationValues = value
     
    value = instance.ExtendedNegotiationValues
    public byte[] ExtendedNegotiationValues {get; set;}
    public:
    property array<byte>^ ExtendedNegotiationValues {
       array<byte>^ get();
       void set (    array<byte>^ value);
    }
    Remarks

    This property enable applications to share or negotiate extended information about themselves.

    The exact meanings of the various values and byte positions used for extended negotiation vary from one service class to another, and they are all detailed in part 4 of DICOM. e.g. for C-STORE operations, byte 1 represents the "storage level", byte 3 the level of digital signature support and byte 5 controls the coercion of data elements (2,4, & 6 are reserved). However, for C-FIND operations, only 1 byte is specified, indicating whether the SCP supports relational queries. In all cases, support is optional, and default values exist if extended negotiation is not performed.

    If this property is set to true, then any extended negotiation items set up before Open are proposed. When incoming associations are received, then incoming values are automatically sent out again (i.e. accepted) unless altered using the ExtendedNegotiationValues property in the AssociationRequest event.

    Once an association is established, this property becomes read-only, but still reflects the arrangement negotiated.

    Please note that this property is shared between all contexts with the same AbstractSyntax (SOP class), so changing one will change the value for any other matching contexts.

    Requirements

    Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also