'Declaration
 
<ExtensionAttribute()>
<NotNullAttribute()>
Public Overloads Shared Function Constant( _
   ByVal dataVariable As UADataVariable, _
   ByVal valueType As Type, _
   ByVal attributeData As UAAttributeData _
) As UADataVariable

'Usage
 
Dim dataVariable As UADataVariable
Dim valueType As Type
Dim attributeData As UAAttributeData
Dim value As UADataVariable
 
value = UADataVariableExtension.Constant(dataVariable, valueType, attributeData)

[Extension()]
[NotNull()]
public static UADataVariable Constant( 
   UADataVariable dataVariable,
   Type valueType,
   UAAttributeData attributeData
)

[Extension()]
[NotNull()]
public:
static UADataVariable^ Constant( 
   UADataVariable^ dataVariable,
   Type^ valueType,
   UAAttributeData^ attributeData
) 

Parameters

dataVariable

The data variable that will be modified and returned.

The value of this parameter cannot be null (Nothing in Visual Basic).

valueType

The type of the data variable, expressed as .NET System.Type.

The value of this parameter cannot be null (Nothing in Visual Basic).

attributeData

The constant attribute data that will be provided by the data variable.

The value of this parameter cannot be null (Nothing in Visual Basic).

Return Value

For reads and subscriptions, the data variable will provide always the same data, specified in this method call. The data variable will not be writable.

The data variable is made read-only, and its minimum sampling interval is set to System.Threading.Timeout.Infinite, effectively disabling the sampling.

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows