Graph.BeginUpdate Method (Object, String, UndoOption)

Starts a batch mode update on the Graph (which is more efficient). You must call the Complete() method on the returned GraphTransactionScope, otherwise your changes will be rolled back. The usual pattern is to use this in a using block so that if an exception is thrown the changes are automatically rolled back.

Namespace:  Microsoft.VisualStudio.GraphModel
Assembly:  Microsoft.VisualStudio.GraphModel (in Microsoft.VisualStudio.GraphModel.dll)

Syntax

'Declaration
Public Function BeginUpdate ( _
    undoUnitId As Object, _
    undoDescription As String, _
    option As UndoOption _
) As GraphTransactionScope

public GraphTransactionScope BeginUpdate(
    Object undoUnitId,
    string undoDescription,
    UndoOption option
)

public:
GraphTransactionScope^ BeginUpdate(
    Object^ undoUnitId, 
    String^ undoDescription, 
    UndoOption option
)

member BeginUpdate : 
        undoUnitId:Object * 
        undoDescription:string * 
        option:UndoOption -> GraphTransactionScope

public function BeginUpdate(
    undoUnitId : Object, 
    undoDescription : String, 
    option : UndoOption
) : GraphTransactionScope

Parameters

• undoUnitId
  Type: Object

  For identifying and merging.

• undoDescription
  Type: String

  An application might surface this caption as a label on the undo operations.

• option
  Type: Microsoft.VisualStudio.GraphModel.UndoOption

  Type of undo.

Return Value

Type: Microsoft.VisualStudio.GraphModel.GraphTransactionScope
A new GraphTransactionScope.

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

Graph Class

BeginUpdate Overload

Microsoft.VisualStudio.GraphModel Namespace