OPC Studio User's Guide and Reference
ContainsKey Method (_FieldDataDictionary)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.DataTypeModel.ComTypes Namespace > _FieldDataDictionary Interface : ContainsKey Method

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

Syntax
'Declaration
 
Function ContainsKey( _
   ByVal key As Object _
) As Boolean
'Usage
 
Dim instance As _FieldDataDictionary
Dim key As Object
Dim value As Boolean
 
value = instance.ContainsKey(key)
bool ContainsKey( 
   object key
)
bool ContainsKey( 
   Object^ key
) 

Parameters

key

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

Remarks

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

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