Facing problem in Silverlight Path Control

07-18-2007 6:19 AM |

I am working on a project using Microsoft silverlight. I am facing some problems and looking for your positive reply. I need some a conainer controls (for Path control) which can hold other controls in them. According to my requirments I have to design geometric shape. and then have to add some other shapes(using path control) to it. But I am facing problems as path control is not a container. One other thng is that when I draw some shape. I converts it to path and Data attribute of shows (Data="M87,143 L113,149 143,151 173,152 207,151 227,147 234,146 224,226 203,229 177,231 143,231 114,228 94,225 z") these type of values. I have to change the shape at runtime. Data attribute returns of path reutrns "PathGeometry" object. I diagnosed all areas of PathGeometry but unable to get those values. Please tell me that how can I get and change those values in runtime. Please reply me becouse this problem is delaying my project time line.

Re: Facing problem in Silverlight Path Control

07-18-2007 9:15 AM |

I faced a similar problem, and could never retrieve the PathFiguers defined in the Data attribute. I could manipulate it only if I defined the PathGeomtry in my code, here is an example

Path p = new Path();
            p.SetValue(Path.NameProperty, "myPath");
            PathGeometry g = new PathGeometry();
            PathFigure f = new PathFigure();
            f.StartPoint = new Point(10, 10);
            LineSegment seg = new LineSegment();
            seg.Point = new Point(10, 100);
            LineSegment seg2 = new LineSegment();
            seg2.Point = new Point(100, 100);
            LineSegment seg3 = new LineSegment();
            seg3.Point = new Point(100, 10);
            f.Segments = new PathSegmentCollection();
            f.Segments.Add(seg);
            f.Segments.Add(seg2);
            f.Segments.Add(seg3);
            g.Figures = new PathFigureCollection();
            g.Figures.Add(f);
            p.Data = g;
            p.Fill = new SolidColorBrush(Color.FromRgb(255, 0, 0));
            p.SetValue(Canvas.TopProperty, 10);
            p.SetValue(Canvas.LeftProperty, 10);
            this.Children.Add(p);

Then later based on a click event I retrieved the Path data

    public void onCLick(object sender, EventArgs e)
        {
            Path p = (Path)this.FindName("myPath");
            PathGeometry g = (PathGeometry)p.Data;
            foreach (PathFigure f in g.Figures)
            {
                foreach (PathSegment seg in f.Segments)
                {
                    seg.ToString();
                }
            }
        }

 Hopefully this issue is fixed in the next release, because it is really painful to define path data in code.

Re: Facing problem in Silverlight Path Control

07-18-2007 9:43 AM |

Hello again.

Yasser is right. i've seen it happen too! it looks like shapes and geometries have some bugs when you try to access their collections and they're instantiated from xaml by the silverlight parser.

Re: Facing problem in Silverlight Path Control

10-20-2008 4:43 PM |

I have ran into this issue again, this time in Silverlight 2.  I cannot seem to access the PathGeometry when the Data is set via the Path Syntax [mini language].

Here is my post: http://silverlight.net/forums/p/39163/113610.aspx#113610

I'm hoping that someone will be able to find a workaround for me! 

Re: Facing problem in Silverlight Path Control

12-18-2008 6:03 PM |

i have same problem and i couldnt use in c# code it always gives an error after running.:(( Emre Çağlar Turgut new computer engineer for some months/(2008) my first simple site/Turkish.. http://www.farmabul.com

Re: Facing problem in Silverlight Path Control

01-20-2009 6:18 AM |

I don't think it's possible, sorry.
See post by Yi-Lun Luo in this thread:
http://silverlight.net/forums/t/22418.aspx

There are workarounds, though.
http://www.farseergames.com/blog/post/Workaround-for-Accessing-PathGeometry-Data-in-Code.aspx

Hope it helps.

Re: Facing problem in Silverlight Path Control

01-20-2009 7:39 AM |

There are 2 options:

1. You can store the data string in the Tag attribute and retrieve it at runtime, then by using xamlreader you can recreate the element after making changes.

or

2. You can use the code here to convert the Path to a string:

http://www.codeplex.com/StringToPathGeometry

Tom

Re: Facing problem in Silverlight Path Control

02-23-2009 7:24 PM |

Hi,

I'm looking like a crazy dude for moving one vertex of the path I added with Expression Blend 2 on my page.

I've looked into pathBoxes.Data and I tryed all kind of manipulation but never been able to access one vertex
my path is just a line with 2 vertices.

am I trying something impossible ? Let me know so I can stop searching like fool !
Thank you

Re: Facing problem in Silverlight Path Control

05-11-2009 8:21 AM |

http://bathinenivenkatesh.blogspot.com/

Re: Facing problem in Silverlight Path Control

05-11-2009 4:38 PM |

Interesting...