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GetLongValue Method
See Also

Leadtools.Dicom Namespace > DicomDataSet Class : GetLongValue Method

element: An item in the Data Set.

index: The zero-based index of the first value to retrieve, when more than one value is stored in the Value Field.

count: Value that represents the number of values to retrieve when more than one value is stored in the Value Field. In most instances you will only retrieve one value so this parameter will be equal to one.

Returns a pointer to a 64 long value, stored in the Value Field, of the specified element.

Syntax

Visual Basic (Declaration)
Public Function GetLongValue( _ ByVal element As DicomElement, _ ByVal index As Integer, _ ByVal count As Integer _ ) As Long()

Visual Basic (Usage)	Copy Code
`Dim instance As DicomDataSet Dim element As DicomElement Dim index As Integer Dim count As Integer Dim value() As Long value = instance.GetLongValue(element, index, count)`

C#
public long[] GetLongValue( DicomElement element, int index, int count )

Managed Extensions for C++
public: long[] GetLongValue( DicomElement* element, int index, int count )

C++/CLI
public: array<long> GetLongValue( DicomElement^ element, int index, int count )

Parameters

element: An item in the Data Set.
index: The zero-based index of the first value to retrieve, when more than one value is stored in the Value Field.
count: Value that represents the number of values to retrieve when more than one value is stored in the Value Field. In most instances you will only retrieve one value so this parameter will be equal to one.

Return Value

A pointer to a 64 long value stored in the Value Field of the specified Data Element. null if the length of the Value Field is 0, the method was called for the incorrect Value Representation type, or the method was called for a folder (sequence) element.

Example

For an example, refer to SetIntValue.

Remarks

If you have more than one value stored in the Value Field of the specified Data Element, you can retrieve one or more of those elements. For example, if the Value Field of the specified Data Element contains three long values, and you are only interested in retrieving the last two long values, set index to 1 and count to 2. This tells the method to retrieve the long values starting at position 1 (the index is zero-based) and retrieve two values. Therefore you would retrieve the values in positions 1 and 2 in the Value Field.

This method can be called only if the Value Representation of the Data Element is DicomVRType.AT, DicomVRType.IS, DicomVRType.SL, or DicomVRType.UL. For more information about Value Representations, refer to Default Value Representation Table.

Requirements

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