问题描述
如果我在错误的论坛发帖，我提前道歉，我的问题大约是XML和C＃的一半。我试图使用Microsoft.Expression.Shapes命名空间中的Arc类绘制饼图。当使用以下代码在XML中定义Arc时，这在WPF中可以正常工作：
I apologize in advance if I''m posting in the wrong forum, my question is about half and half on XML and C#. I am trying to draw a pie chart using the Arc class from the Microsoft.Expression.Shapes namespace. This works correctly in WPF when the Arcs are defined in XML with the following code:
<Grid Grid.Row="0" x:Name="primaryGrid">
<ed:Arc x:Name="pieSlice1" ArcThickness="1" ArcThicknessUnit="Percent" Fill="Green" HorizontalAlignment="Left" VerticalAlignment="Stretch" Stretch="None" Stroke="Black" UseLayoutRounding="False" Width="204" Height="204" Margin="0" ToolTipService.ToolTip="Text"/>
<TextBlock x:Name="pie1TextBlock" FontSize="18" Height="26" Margin="0,51,47,0" TextWrapping="NoWrap" VerticalAlignment="Top" HorizontalAlignment="Right" Width="121"/>
<Rectangle Fill="Green" Height="20" Width="20" Margin="294,55,189,0" Stroke="Black" VerticalAlignment="Top"/>
<ed:Arc x:Name="pieSlice2" ArcThickness="1" ArcThicknessUnit="Percent" Fill="Blue" HorizontalAlignment="Left" Stretch="None" Stroke="Black" UseLayoutRounding="False" Width="204" Height="204" Margin="0"/>
<TextBlock x:Name="pie2TextBlock" FontSize="18" Height="26" Margin="0,86,47,0" TextWrapping="NoWrap" VerticalAlignment="Top" HorizontalAlignment="Right" Width="121"/>
<Rectangle Fill="Blue" Height="20" Width="20" Margin="294,90,189,0" Stroke="Black" VerticalAlignment="Top"/>
</Grid>
使用XML，项目正确排列并为我的饼图创建一个完整的圆（即，开始和结束角度按定义工作），即使我画了C＃代码中的段，例如：
Using XML, the items line up correctly and create a full circle for my pie graph (i.e., the Start and End angles work as defined), even when I draw the segments in C# code, such as:
double[] itemsArray = new double[arraySize] { 12.5, 25.0, 6.25, 6.25, 10.0, 8.8, 11.2, 20 };
Arc[] sliceArray = new Arc[arraySize] {pieSlice1, pieSlice2, pieSlice3, pieSlice4, pieSlice5, pieSlice6, pieSlice7, pieSlice8};
TextBlock[] textArray = new TextBlock[arraySize] { pie1TextBlock, pie2TextBlock, pie3TextBlock, pie4TextBlock, pie5TextBlock, pie6TextBlock, pie7TextBlock, pie8TextBlock };
for (int counter = 0; counter < 8; counter++)
{
endAngle = endAngle + itemsArray[counter] / 100 * 360;
sliceArray[counter].StartAngle = beginAngle;
sliceArray[counter].EndAngle = endAngle;
textArray[counter].Text = (((endAngle - beginAngle) / 360) * 100).ToString() + "%";
beginAngle = endAngle;
}
但是，当我用C＃代码动态创建弧而不是在WPF中定义弧时，弧线最终堆叠在一起：
However, when I create the arcs dynamically in C# code instead of defining them in WPF, the arcs end up stacked on top of each other:
Arc arc = new Arc();
arc.HorizontalAlignment = HorizontalAlignment.Left;
arc.VerticalAlignment = VerticalAlignment.Stretch;
arc.Stroke = Brushes.Black;
arc.StrokeThickness = 1;
arc.ArcThickness = 20;
arc.UseLayoutRounding = false;
arc.Fill = Brushes.Blue;
arc.Margin = new Thickness(0);
arc.Height = 50;
arc.Width = 50;
arc.StartAngle = 0;
arc.EndAngle = 90;
arc.ToolTip = new ToolTip();
arc.ToolTip = "Blue Text";
Arc arc2 = new Arc();
arc2.HorizontalAlignment = HorizontalAlignment.Left;
arc2.VerticalAlignment = VerticalAlignment.Stretch;
arc2.Stroke = Brushes.Black;
arc2.StrokeThickness = 1;
arc2.ArcThickness = 20;
arc2.UseLayoutRounding = false;
arc2.Fill = Brushes.Green;
arc2.Margin = new Thickness(0);
arc2.Height = 50;
arc2.Width = 50;
arc2.StartAngle = 90;
arc2.EndAngle = 201;
arc2.ToolTip = new ToolTip();
arc2.ToolTip = "Green Text";
Arc arc3 = new Arc();
arc3.HorizontalAlignment = HorizontalAlignment.Left;
arc3.VerticalAlignment = VerticalAlignment.Stretch;
arc3.Stroke = Brushes.Black;
arc3.StrokeThickness = 1;
arc3.ArcThickness = 20;
arc3.Fill = Brushes.Yellow;
arc3.Margin = new Thickness(0);
arc3.Height = 50;
arc3.Width = 50;
arc3.StartAngle = 201;
arc3.EndAngle = 234;
arc3.ToolTip = new ToolTip();
arc3.ToolTip = "Yellow Text";
Arc arc4 = new Arc();
arc4.HorizontalAlignment = HorizontalAlignment.Left;
arc4.VerticalAlignment = VerticalAlignment.Stretch;
arc4.Stroke = Brushes.Red;
arc4.StrokeThickness = 1;
arc4.ArcThickness = 20;
arc4.Fill = Brushes.Yellow;
arc4.Margin = new Thickness(0);
arc4.Height = 50;
arc4.Width = 50;
arc4.StartAngle = 234;
arc4.EndAngle = 360;
arc4.ToolTip = new ToolTip();
arc4.ToolTip = "Red Text";
Canvas canvas = new Canvas();
canvas.Margin = new Thickness(50);
canvas.Height = 300;
canvas.Width = 300;
canvas.Children.Add(arc);
canvas.Children.Add(arc2);
canvas.Children.Add(arc3);
canvas.Children.Add(arc4);
this.Content = canvas;
我不确定它是否是画布和网格之间的区别，但是我很难将饼图排成一行。我试图避免设置画布的边距，或者在WPF中定义一定数量的弧。
我想我很困惑这是什么区别在用于在画布中生成弧的C＃代码和用于在网格中创建弧的WPF代码之间？我怎样才能将弧的输出设置为网格？
I''m not sure if it''s the difference between a canvas and a grid, but I''m having much trouble getting the pie slices to line up. I am trying to avoid setting the margins of the canvas, or defining a set number of arcs in WPF.
I guess I''m confused as to what the difference is between the C# code used to generate the arcs in a canvas and the WPF code used to create the arc in a grid? How could I set the output of the arcs to a grid?
推荐答案
// position arc at point 10,10 from the top-/left uppermost corner of the canvas
Canvas.SetTop(arc, 10);
Canvas.SetLeft(arc, 10);
// positions other children here
// ...
// add children to canvas
canvas.Children.Add(arc);
canvas.Children.Add(arc2);
canvas.Children.Add(arc3);
canvas.Children.Add(arc4);
再见，
Thomas。
Bye,
Thomas.
这篇关于Microsoft.Expression.Shapes命名空间中的Arc类问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！