Question

我有一个WPF应用程序，我需要在运行时以编程方式进行操作。

我想要做的是拥有一个包含4个线段的路径，如下所示：

          Canvas.Left="324" 
          Canvas.Top="247">
        <Path.Data>
            <PathGeometry>
                <PathFigure IsClosed="True">
                    <LineSegment Point="0.5,0.5" />
                    <LineSegment Point="355.5,0.5" />
                    <LineSegment Point="355.5,229.5" />
                    <LineSegment Point="0.5,229.5" />
                </PathFigure>
            </PathGeometry>
        </Path.Data>
    </Path>

现在，在我的c＃代码中，我可以这样做：

        PathFigureCollection figures = (ThePath.Data as PathGeometry).Figures;

        Console.WriteLine("number of segments: " + figures[0].Segments.Count);

        LineSegment topLeft = figures[0].Segments[0] as LineSegment;
        LineSegment topRight = figures[0].Segments[1] as LineSegment;
        LineSegment bottomRight = figures[0].Segments[2] as LineSegment;
        LineSegment bottomLeft = figures[0].Segments[3] as LineSegment;

        topLeft.Point = new Point(topLeft.Point.X - 5, topLeft.Point.Y - 5);
        topRight.Point = new Point(topRight.Point.X + 45, topRight.Point.Y - 35);
        bottomRight.Point = new Point(bottomRight.Point.X, bottomRight.Point.Y + 35);
        bottomLeft.Point = new Point(bottomLeft.Point.X + 5, bottomLeft.Point.Y - 15);

但问题是，当我更改topLeft LineSegment时，“似乎”将一个点添加到段列表中，即两个LAST点（左下角和左上角）不再加入......

我知道我在这里缺少一些小东西，但是，请，任何帮助将不胜感激

谢谢，Mark

Answer 1

没关系我想通了，我只需要在PathFigure上设置StartPoint，然后改变那个点以及我删除第一个的线段（考虑到我添加了StartPoint）。

感谢。

WPF在运行时更改矩形点

1 个答案: