OPC Studio User's Guide and Reference
FromFile Method (StreamLoader<TValue>)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.IO Namespace > StreamLoader<TValue> Class : FromFile Method
The path and name of the file to load the value from.

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

Loads a value from a file.
Syntax
'Declaration
 
<NotNullAttribute()>
Public Function FromFile( _
   ByVal filePathAndName As String _
) As ValueResult(Of TValue)
'Usage
 
Dim instance As StreamLoader(Of TValue)
Dim filePathAndName As String
Dim value As ValueResult(Of TValue)
 
value = instance.FromFile(filePathAndName)
[NotNull()]
public ValueResult<TValue> FromFile( 
   string filePathAndName
)
[NotNull()]
public:
ValueResult<TValue^>^ FromFile( 
   String^ filePathAndName
) 

Parameters

filePathAndName
The path and name of the file to load the value from.

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

Return Value

Returns value result with the value loaded.

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

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