/// <summary>
/// Reverses a delete vertex command.
/// </summary>
/// <returns>true if successful, otherwise false</returns>
/// <remarks>
/// This method inserts the vertex back into the object.
/// </remarks>
public override bool Undo()
{
bool success = false;
if (this.Node != null)
{
IPoints objPoints = this.Node as IPoints;
if (objPoints != null)
{
if (this.vertexIdx >= 0 && this.vertexIdx <= objPoints.PointCount)
{
objPoints.InsertPoint(this.vertexIdx, this.ptValue);
success = true;
}
}
}
return(success);
}
/// <summary>
/// Inserts the specified vertex into the node.
/// </summary>
/// <param name="cmdTarget">Unused</param>
/// <returns>true if successful, otherwise false</returns>
/// <remarks>
/// <seealso cref="Syncfusion.Windows.Forms.Diagram.IPoints"/>
/// </remarks>
public override bool Do(object cmdTarget)
{
bool success = false;
if (this.Node != null)
{
IPoints objPoints = this.Node as IPoints;
if (objPoints != null)
{
if (this.vertexIdx >= 0 && this.vertexIdx <= objPoints.PointCount)
{
try
{
objPoints.InsertPoint(this.vertexIdx, this.point);
success = true;
}
catch
{
success = false;
}
}
else if (this.vertexIdx == -1)
{
try
{
objPoints.AddPoint(this.point);
this.vertexIdx = objPoints.PointCount - 1;
success = true;
}
catch
{
success = false;
}
}
}
}
return(success);
}