C# 以编程方式在WPF中创建网格作为模板
我想以编程方式创建一个具有样式的基本用户控件。 在这种样式中,我想添加一个C# 以编程方式在WPF中创建网格作为模板,c#,wpf,wpf-controls,frameworkelementfactory,C#,Wpf,Wpf Controls,Frameworkelementfactory,我想以编程方式创建一个具有样式的基本用户控件。 在这种样式中,我想添加一个网格(没问题),但我无法将列定义添加到此网格 我的示例代码是 ControlTemplate templ = new ControlTemplate(); FrameworkElementFactory mainPanel = new FrameworkElementFactory(typeof(DockPanel)); mainPanel.SetValue(DockPanel.LastChildFillProperty,
网格
(没问题),但我无法将列定义添加到此网格
我的示例代码是
ControlTemplate templ = new ControlTemplate();
FrameworkElementFactory mainPanel = new FrameworkElementFactory(typeof(DockPanel));
mainPanel.SetValue(DockPanel.LastChildFillProperty, true);
FrameworkElementFactory headerPanel = new FrameworkElementFactory(typeof(StackPanel));
headerPanel.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);
headerPanel.SetValue(DockPanel.DockProperty, Dock.Top);
mainPanel.AppendChild(headerPanel);
FrameworkElementFactory headerImg = new FrameworkElementFactory(typeof(Image));
headerImg.SetValue(Image.MarginProperty, new Thickness(5));
headerImg.SetValue(Image.HeightProperty, 32d);
headerImg.SetBinding(Image.SourceProperty, new Binding("ElementImage") { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent) });
headerPanel.AppendChild(headerImg);
FrameworkElementFactory headerTitle = new FrameworkElementFactory(typeof(TextBlock));
headerTitle.SetValue(TextBlock.FontSizeProperty, 16d);
headerTitle.SetValue(TextBlock.VerticalAlignmentProperty, VerticalAlignment.Center);
headerTitle.SetBinding(TextBlock.TextProperty, new Binding("Title") { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent) });
headerPanel.AppendChild(headerTitle);
FrameworkElementFactory mainGrid = new FrameworkElementFactory(typeof(Grid));
FrameworkElementFactory c1 = new FrameworkElementFactory(typeof(ColumnDefinition));
c1.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Star));
FrameworkElementFactory c2 = new FrameworkElementFactory(typeof(ColumnDefinition));
c2.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Auto));
FrameworkElementFactory c3 = new FrameworkElementFactory(typeof(ColumnDefinition));
c3.SetValue(ColumnDefinition.WidthProperty, new GridLength(3, GridUnitType.Star));
FrameworkElementFactory colDefinitions = new FrameworkElementFactory(typeof(ColumnDefinitionCollection));
colDefinitions.AppendChild(c1);
colDefinitions.AppendChild(c2);
colDefinitions.AppendChild(c3);
mainGrid.AppendChild(colDefinitions);
mainPanel.AppendChild(mainGrid);
FrameworkElementFactory content = new FrameworkElementFactory(typeof(ContentPresenter));
content.SetBinding(ContentPresenter.ContentProperty, new Binding() { RelativeSource = new RelativeSource(RelativeSourceMode.TemplatedParent), Path = new PropertyPath("Content") });
mainGrid.AppendChild(content);
templ.VisualTree = mainPanel;
Style mainStyle = new Style();
mainStyle.Setters.Add(new Setter(UserControl.TemplateProperty, templ));
this.Style = mainStyle;
但是创建类型为ColumnDefinitionCollection
的FrameworkElementFactory
将引发异常“'ColumnDefinitionCollection'类型必须派生自FrameworkElement、FrameworkContentElement或Visual3D。”
谁能帮助我?您可以像这样简单地添加列定义 XAML代码:
<Grid.ColumnDefinitions>
<ColumnDefinition Height="50"/>
<ColumnDefinition Height="100"/>
<ColumnDefinition Height="*"/>
</Grid.ColumnDefinitions>
ColumnDefinition c = new ColumnDefinition();
c.Width = new GridLength(50, GridUnitType.Pixel);
ColumnDefinition c1 = new ColumnDefinition();
c1.Width = new GridLength(100, GridUnitType.Pixel);
ColumnDefinition c2 = new ColumnDefinition();
c2.Width = new GridLength(0, GridUnitType.Star);
grMain.ColumnDefinitions.Add(c);
grMain.ColumnDefinitions.Add(c1);
grMain.ColumnDefinitions.Add(c2);
有关详细信息,请参见FrameworkElementFactory具有一些用于处理网格中的列定义和行定义的自定义逻辑。对于这些值,可以将其视为factory树中的子级,例如:
FrameworkElementFactory gridFactory = new FrameworkElementFactory(typeof(Grid));
var column1 = new FrameworkElementFactory(typeof(ColumnDefinition));
column1.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Auto));
var column2 = new FrameworkElementFactory(typeof(ColumnDefinition));
column2.SetValue(ColumnDefinition.WidthProperty, new GridLength(1, GridUnitType.Star));
gridFactory.AppendChild(column1);
gridFactory.AppendChild(column2);
您只需要更改代码的最后一部分。见下文 原始代码:
colDefinitions.AppendChild(c1);
colDefinitions.AppendChild(c2);
colDefinitions.AppendChild(c3);
mainGrid.AppendChild(colDefinitions);
新代码:
mainGrid.AppendChild(c1);
mainGrid.AppendChild(c2);
mainGrid.AppendChild(c3);
也许考虑使用<代码> XAMLReald.Load()/>代码>它优于
mainGrid.AppendChild(c1);
mainGrid.AppendChild(c2);
mainGrid.AppendChild(c3);