![](/img/trans.png)
[英]Drawing lines in canvas using accelerometer sensor data in windows phone 8.1
[英]Drawing lines in windows phone 7?
我想使用路径画一些线。 它总是显示我在运行程序时的错误。 错误发生在以下句子:“ myPathSegmentCollection.Add(myLineSegment [i]);” 可以构建解决方案。 调试时,它显示“元素已经是另一个元素的子元素”
以下是我的功能:
public void drawline(Point endP)
{
PathFigenter code hereure myPathFigure = new PathFigure();
myPathFigure.StartPoint = endP;
LineSegment [] myLineSegment = new LineSegment[5];
Point myPoint = new Point();
LineSegment line = new LineSegment();
PathSegmentCollection myPathSegmentCollection = new PathSegmentCollection();
for (int i = 0; i < 5; i++)
{
myPoint.X = i + 10.0;
myPoint.Y = i+1.0;
line.Point = myPoint;
myLineSegment[i] = line;
myPathSegmentCollection.Add(myLineSegment[i]);
}
myPathFigure.Segments = myPathSegmentCollection;
PathFigureCollection myPathFigureCollection = new PathFigureCollection();
myPathFigureCollection.Add(myPathFigure);
PathGeometry myPathGeometry = new PathGeometry();
myPathGeometry.Figures = myPathFigureCollection;
myPath.StrokeThickness = 1;
myPath.Data = myPathGeometry;
}
有没有人可以帮忙? 谢谢!
问题是您在循环中重新使用LineSegment
。 这些只能作为单个控件的父项,因此尝试多次添加同一项会引发异常。
要修复它,请在循环中创建一个新的LineSegment
:
for (int i = 0; i < 5; i++)
{
myLineSegment[i] = new LineSegment() {
Point = new Point(i + 10.0, i + 1.0);
};
myPathSegmentCollection.Add(myLineSegment[i]);
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.