OPC Studio User's Guide and Reference
Implicit Type Conversion(VarType,VarTypes) Operator



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.ComInterop Namespace > VarType Class > Implicit Type Conversion Operator : Implicit Type Conversion(VarType,VarTypes) Operator
Enumerated value to be converted.

Valid values of this parameter are in the range from Empty (VarTypes.Empty) to Illegal (VarTypes.Illegal).

Converts an enumerated value to a VarType object.
Syntax
'Declaration
 
<NotNullAttribute()>
Overloads Public Operator Widening CType( _
   ByVal internalValue As VarTypes _
) As VarType
'Usage
 
[NotNull()]
public VarType operator implicit( 
   VarTypes internalValue
)
[NotNull()]
public:
operator VarType^ ( 
   VarTypes internalValue
)

Parameters

internalValue
Enumerated value to be converted.

Valid values of this parameter are in the range from Empty (VarTypes.Empty) to Illegal (VarTypes.Illegal).

Return Value

Returns a VarType converted from the input argument.

Because there is an implicit conversion from VarType to System.Int32 and VarTypes, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the return value in place of an integer (System.Int32) (representing the numerical value of the COM VARTYPE), or in place a VarTypes enumeration value. When the implicit conversion operators are not supported (such as with Python.NET), you can use the ToInt32 or ToVarTypes static method instead.

This method never returns null (Nothing in Visual Basic).

Remarks

This operator is equivalent to FromVarTypes.

Requirements

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

See Also