'Declaration
 
Public Function OpenFileAsync( _
   ByVal defaultFormat As NGridFormat(Of NTreeGridDocument,NTreeGrid), _
   ByVal docFormatRegistry As NGridFormatRegistry(Of NTreeGridDocument,NTreeGrid), _
   ByVal reportErrors As System.Boolean, _
   ByVal askToSaveChanges As System.Boolean _
) As NPromise(Of Boolean)

'Usage
 
Dim instance As NTreeGridViewControl
Dim defaultFormat As NGridFormat(Of NTreeGridDocument,NTreeGrid)
Dim docFormatRegistry As NGridFormatRegistry(Of NTreeGridDocument,NTreeGrid)
Dim reportErrors As System.Boolean
Dim askToSaveChanges As System.Boolean
Dim value As NPromise(Of Boolean)
 
value = instance.OpenFileAsync(defaultFormat, docFormatRegistry, reportErrors, askToSaveChanges)

public NPromise<bool> OpenFileAsync( 
   NGridFormat<NTreeGridDocument,NTreeGrid> defaultFormat,
   NGridFormatRegistry<NTreeGridDocument,NTreeGrid> docFormatRegistry,
   System.bool reportErrors,
   System.bool askToSaveChanges
)

Parameters

defaultFormat

docFormatRegistry

reportErrors

askToSaveChanges

Target Platforms: Windows 11, Windows 10, Windows 7, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2012, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later)

Reference

NTreeGridViewControl Class
NTreeGridViewControl Members