问题描述
在编写包含ArcSegment控件的图形时遇到一个奇怪的问题.
I meet one strange problem in writing a visual including ArcSegment control.
这是xaml代码:
< Canvas x:Name ='canvas'保证金＝"20".宽度＝"300".身高="300">
< Path Stroke =红色"； StrokeThickness ＝"3".填充=黄色">
< Path.Data>
< PathGeometry>
b < PathFigure StartPoint ="113 113". IsClosed ="True">
nbsp; bsp < LineSegment Point ="113 0-1"； IsStroked ＝真". />
nbsp; bsp < ArcSegment x:Name ="arc"尺寸="113113" IsLargeArc ="True" SweepDirection ＝顺时针". RotationAngle ="340.5"
nbsp; bsp 点="75.18 6.51"/
nbsp; bsp < LineSegment Point ="113113"; />
b </PathFigure>
</PathGeometry>
</Path.Data>
</Path>
< Path Stroke =红色"； StrokeThickness ＝"3".填充=红色">
< Path.Data>
< PathGeometry>
b < PathFigure StartPoint ="113 113". IsClosed ="True">
nbsp; bsp < LineSegment Point ="113 0-1"； />
nbsp; bsp < ArcSegment x:Name ="arc2"尺寸="113113" IsLargeArc ="False". SweepDirection ＝逆时针". RotationAngle ="19.5"
nbsp; bsp 点="75.18 6.51"/
nbsp; bsp < LineSegment Point ="113 113"/<
b </PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</画布>
<Canvas x:Name="canvas" Margin="20" Width="300" Height="300">
<Path Stroke="Red" StrokeThickness="3" Fill="Yellow">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="113 113" IsClosed="True">
<LineSegment Point="113 0" IsStroked="True" />
<ArcSegment x:Name="arc" Size="113 113" IsLargeArc="True" SweepDirection="Clockwise" RotationAngle="340.5"
Point="75.18 6.51"/>
<LineSegment Point="113 113" />
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
<Path Stroke="Red" StrokeThickness="3" Fill="Red">
<Path.Data>
<PathGeometry>
<PathFigure StartPoint="113 113" IsClosed="True">
<LineSegment Point="113 0" />
<ArcSegment x:Name="arc2" Size="113 113" IsLargeArc="False" SweepDirection="Counterclockwise" RotationAngle="19.5"
Point="75.18 6.51"/>
<LineSegment Point="113 113"/>
</PathFigure>
</PathGeometry>
</Path.Data>
</Path>
</Canvas>
，这里是将该画布写入xps文档的代码:
and here the code to write this canvas to an xps document:
//var cultureInfo = CultureInfo.GetCultureInfo("en-US");
var cultureInfo = CultureInfo.GetCultureInfo("fr-FR");
Thread.CurrentThread.CurrentCulture = cultureInfo;
Thread.CurrentThread.CurrentUICulture = cultureInfo;
字符串strXpsFile = $"C:\\ temp \\ {Guid.NewGuid().ToString()}.xps";
var document = new XpsDocument(strXpsFile，FileAccess.ReadWrite);
var xpsdw = XpsDocument.CreateXpsDocumentWriter(document);
var vToXpsD = xpsdw.CreateVisualsCollator();
vToXpsD.Write(canvas);
vToXpsD.EndBatchWrite();
document.Close();
//var cultureInfo = CultureInfo.GetCultureInfo("en-US");
var cultureInfo = CultureInfo.GetCultureInfo("fr-FR");
Thread.CurrentThread.CurrentCulture = cultureInfo;
Thread.CurrentThread.CurrentUICulture = cultureInfo;
string strXpsFile = $"C:\\temp\\{Guid.NewGuid().ToString()}.xps";
var document = new XpsDocument(strXpsFile, FileAccess.ReadWrite);
var xpsdw = XpsDocument.CreateXpsDocumentWriter(document);
var vToXpsD = xpsdw.CreateVisualsCollator();
vToXpsD.Write(canvas);
vToXpsD.EndBatchWrite();
document.Close();
我得到了一个损坏的XPS文档.
I get a broken xps document.
如果我将文化更改为en-US或InvariantCulture.或将RotationAngle设置为整数而不是十进制值，我可以获得正确的xps文档.似乎与小数点分隔符有关.
If I change the culture to en-US, or the InvariantCulture. or make the RotationAngle to an integer instead of a decimal value, I can get the correct xps document. Seems related to the decimal separator.
您对此有任何想法吗?
Do you have any idea about this?
推荐答案
是的，在几何"对象上调用ToString()方法时存在一个已知问题，这是当区域性"设置为"en-US"或类似区域性以外的其他内容时发生的事情.路径值应以逗号分隔 或空格，以便正确解析，但是在使用fr-FR文化时，ToString()方法返回分号分隔的值.请参阅以下页面以获取有关此信息的更多信息:
Yes, there is a known issue when calling the ToString() method on Geometry objects, which is what is happening under the hood here, when the Culture is set to something other than en-US or a similar culture. The Path values should be separated by a comma or a space in order to be parsed correctly but when using the fr-FR culture the ToString() method is returning semi-colon seperated values. Please refer to the following page for more information about this:
为什么将字符串路径转换为Geometry并再次返回会引发FormatException ?: http: //stackoverflow.com/questions/19464064/why-converting-a-string-path-to-geometry-and-back-again-throws-a-formatexception
Why converting a string path to Geometry and back again throws a FormatException?:http://stackoverflow.com/questions/19464064/why-converting-a-string-path-to-geometry-and-back-again-throws-a-formatexception
您可以在创建XPS文件之前将区域性临时设置为en-US或CultureInfo.Invariant，然后将Thread.CurrentThread.CurrentCulture设置为随后的原始区域性，从而轻松解决此问题:
You could easily work around this by temporarily setting the culture to en-US or CultureInfo.Invariant just before you create the XPS file and then set the Thread.CurrentThread.CurrentCulture back to your original culture immediately afterwards:
string currentCulture = Thread.CurrentThread.CurrentCulture.Name;
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
string strXpsFile =
希望有帮助.
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Please remember to close your threads by marking helpful posts as answer and then start a new thread if you have a new question. Please don't ask several questions in the same thread.
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