OPC Studio User's Guide and Reference
Prefix Property (ResourceDescriptor)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib Namespace > ResourceDescriptor Class : Prefix Property
A scheme name followed by a colon. An empty string if there is no scheme.
Syntax
'Declaration
 
<IgnoreDataMemberAttribute()>
<NotNullAttribute()>
Public Property Prefix As String
'Usage
 
Dim instance As ResourceDescriptor
Dim value As String
 
instance.Prefix = value
 
value = instance.Prefix
[IgnoreDataMember()]
[NotNull()]
public string Prefix {get; set;}
[IgnoreDataMember()]
[NotNull()]
public:
property String^ Prefix {
   String^ get();
   void set (    String^ value);
}

Property Value

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

Exceptions
ExceptionDescription

One of the arguments provided to a method is not valid.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

The getter method of this property is pure, i.e. it does not have observable side effects.

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