ModelChangedEventArgs

StockSharp.Xaml.Diagram.GXDiagram.Model

This class represents a change to a model.

继承自: PropertyChangedEventArgs

实现: IUndoableEdit

构造函数

ModelChangedEventArgs()

The empty/default constructor produces an EventArgs whose properties still need to be initialized.

ModelChangedEventArgs(string, object, object, object)

This constructor initializes the mostly commonly used properties.

pname: the PropertyName property
data: the Data property
oldval: the OldValue property
newval: the NewValue property

ModelChangedEventArgs(ModelChangedEventArgs)

This is basically a "copy constructor", making a copy of the given ModelChangedEventArgs.

e

属性

Change : ModelChange

Gets or sets the kind of change that this represents.

Data : object

Gets or sets the data object, part of the model, that was modified.

Model : IDiagramModel

Gets or sets the IDiagramModel that has been modified.

NewParam : object

Gets or sets an optional value associated with the new value.

NewValue : object

Gets or sets the next or current value that the property has.

OldParam : object

Gets or sets an optional value associated with the old value.

OldValue : object

Gets or sets the previous or old value that the property had.

方法

CanRedo() : bool

This predicate returns true if you can call Redo.

CanUndo() : bool

This predicate returns true if you can call Undo.

Clear()

Forget any references that this object may have.

GetParam(bool) : object

This is a convenient method to get the right parameter value, depending on the value of .

undo

返回值: either OldParam or NewParam

GetValue(bool) : object

This is a convenient method to get the right value, depending on the value of .

undo

返回值: either OldValue or NewValue

Redo()

Re-perform the document change after an Undo by calling Boolean).

ToString() : string

Produce a human-readable description of the change to the model.

Undo()

Reverse the effects of this document change by calling Boolean).