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请问：XAML 和 C#代码 间，如何互相转化？ RRS feed

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  • Question
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    比如，这是一个我下载的圆角按钮的示例代码，但我想要它的C#代码格式：

    <Button Content="地图" Height="50" Margin="555,282,466,393" Width="50">
                <Button.Template>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border BorderBrush="{TemplateBinding Control.BorderBrush}" BorderThickness="0" CornerRadius="3,13,3,13" Name="PART_Background">
                            <Border.Background>
                                <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                    <GradientStop Color="White" Offset="0.0" />
                                    <GradientStop Color="Silver" Offset="0.5" />
                                    <GradientStop Color="White" Offset="0.0" />
                                </LinearGradientBrush>
                            </Border.Background>
                            <ContentPresenter Content="{TemplateBinding ContentControl.Content}" HorizontalAlignment="Center" VerticalAlignment="Center" />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="UIElement.IsMouseOver" Value="True">
                                <Setter Property="Border.Background" TargetName="PART_Background">
                                    <Setter.Value>
                                        <LinearGradientBrush EndPoint="0,1" StartPoint="0,0">
                                            <GradientStop Color="Silver" Offset="0.0" />
                                            <GradientStop Color="White" Offset="0.5" />
                                            <GradientStop Color="Silver" Offset="0.0" />
                                        </LinearGradientBrush>
                                    </Setter.Value>
                                </Setter>
                            </Trigger>
                            <Trigger Property="ButtonBase.IsPressed" Value="True">
                                <Setter Property="UIElement.Effect">
                                    <Setter.Value>
                                        <DropShadowEffect BlurRadius="10" Color="Black" Direction="0" Opacity="0.6" RenderingBias="Performance" ShadowDepth="0" />
                                    </Setter.Value>
                                </Setter>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Button.Template>
            </Button>

    我尤其不知道，这段XAML中的 border 赋值给 ControlTemplate的哪个属性：

    <ControlTemplate TargetType="{x:Type Button}">
                        <Border BorderBrush="{TemplateBinding Control.BorderBrush}" BorderThickness="0" CornerRadius="3,13,3,13" Name="PART_Background">
    请解答以上问题后，最好还能告诉我：如何学会 XAML 转换到 C#代码 的方法，因为网络上大多示例都是用XAML写的。转换的事情，很头大。

    2014年10月15日 7:38
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答案

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    你好，

    >>我尤其不知道，这段XAML中的 border 赋值给 ControlTemplate的哪个属性

    你需要使用FrameworkElementFactory 去协助创建控件模板：http://msdn.microsoft.com/en-us/library/system.windows.frameworkelementfactory(v=vs.110).aspx

    以下是我根据你的XAML转后后的后台代码：

    //Template
ControlTemplate template = new ControlTemplate(typeof(Button));
FrameworkElementFactory borderElement = new FrameworkElementFactory(typeof(Border));
borderElement.Name = "PART_Background";
borderElement.SetValue(Border.BorderBrushProperty, new TemplateBindingExtension(Control.BorderBrushProperty));
borderElement.SetValue(Border.BorderThicknessProperty, new Thickness(0));
borderElement.SetValue(Border.CornerRadiusProperty, new CornerRadius(3, 13, 3, 13));

LinearGradientBrush lgbrush = new LinearGradientBrush() { EndPoint = new Point(0, 1), StartPoint = new Point(0, 0) };
lgbrush.GradientStops.Add(new GradientStop(Colors.White, 0.0));
lgbrush.GradientStops.Add(new GradientStop(Colors.Silver, 0.5));
lgbrush.GradientStops.Add(new GradientStop(Colors.White, 0.0));
borderElement.SetValue(Border.BackgroundProperty, lgbrush);

//ContentPresenter
FrameworkElementFactory cpElement = new FrameworkElementFactory(typeof(ContentPresenter));
cpElement.SetValue(ContentPresenter.ContentProperty, new TemplateBindingExtension(ContentControl.ContentProperty));
cpElement.SetValue(ContentPresenter.HorizontalAlignmentProperty, HorizontalAlignment.Center);
cpElement.SetValue(ContentPresenter.VerticalAlignmentProperty, VerticalAlignment.Center);

borderElement.AppendChild(cpElement);
template.VisualTree = borderElement;

//Trigger
Trigger trigger1 = new Trigger();
trigger1.Property = UIElement.IsMouseOverProperty;
trigger1.Value = true;
Setter setter1 = new Setter();
setter1.TargetName = "PART_Background";
setter1.Property = Border.BackgroundProperty;
LinearGradientBrush lgbrush2 = new LinearGradientBrush() { EndPoint = new Point(0, 1), StartPoint = new Point(0, 0) };
lgbrush2.GradientStops.Add(new GradientStop(Colors.Silver, 0.0));
lgbrush2.GradientStops.Add(new GradientStop(Colors.White, 0.5));
lgbrush2.GradientStops.Add(new GradientStop(Colors.Silver, 0.0));
setter1.Value = lgbrush2;
trigger1.Setters.Add(setter1);

template.Triggers.Add(trigger1);

//Trigger
Trigger trigger2 = new Trigger();
trigger2.Property = ButtonBase.IsPressedProperty;
trigger2.Value = true;
Setter setter2 = new Setter();
setter2.Property = UIElement.EffectProperty;
setter2.Value = new DropShadowEffect() { BlurRadius=10, Color=Colors.Black, Direction= 0, Opacity=0.6, RenderingBias=RenderingBias.Performance, ShadowDepth=0 };
trigger2.Setters.Add(setter2);

template.Triggers.Add(trigger2);

button1.Template = template; //设置模板

    XAML:

    <Button Name="button1" Content="地图" Height="50" Width="50" />

    >>如何学会 XAML 转换到 C#代码 的方法，因为网络上大多示例都是用XAML写的

    以我的经验，可以套用网络上一个一些关于创建后台模板的代码，根据你的需求修改, MSDN英文论坛也有很多类似问题：

    https://social.msdn.microsoft.com/Forums/vstudio/en-US/ddb7fd77-dea1-40f5-a5b7-30d35ecda70e/creating-a-control-template-with-code-behind?forum=wpf
    http://social.msdn.microsoft.com/Forums/en-US/74ef9039-16e7-4e24-945e-1196a4ad9bde/how-to-write-style-code-from-xaml-in-code-behind?forum=wpf

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    • 已标记为答案 OpenNovo 2014年10月16日 13:32
    2014年10月16日 7:45
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