问题描述
- 在我有一个==>
用户控件。 -
在那个用户控件==>一
的ItemsControl。
现在的ItemsControl 生成按钮的按的ItemsSource 定给它。我已经给了一些样式的按钮。
Now ItemsControl generating Button’s As per ItemsSource given to it.I have given some style for those buttons .
==>按钮的内部 Pages.xaml 。
==>和样式放在 DataPagerResourceDictionary.xaml 。
我一直使用用户控件在我的 Maindwindow.xaml 。但我不能改变背景的特定的按钮根据内容按钮
I have using UserControl inside my Maindwindow.xaml.but i can't change Background of Particular Button based on Content Of Button.
您可以从 在这里下载完整的code 。
这低于code工作正常，如果我不给按钮提供样式。
This below code works fine if I do not provide style to button.
for (int i = 0; i < displayPages.pageControl.Items.Count; i++)
{
var container = displayPages.pageControl.ItemContainerGenerator.ContainerFromIndex(i) as ContentPresenter;
var button = container.ContentTemplate.FindName("pageNumberButton", container) as Button;
if (button.Content == " 3 ")
{
button.Background = Brushes.Red;
}
}
我所提供的样式按钮下面code段里面[有看insdie Pages.xaml 。
I have Provided style to button inside following Code snippet[Have look insdie Pages.xaml].
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button x:Name="pageNumberButton" Style="{StaticResource TransparentButton}" Content="{Binding Path=Page_Number}"></Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
或者看看下面code：
Or Have Look At Below Code:
MainWindow.xaml
<Window x:Class="StylingProblem.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525"
xmlns:Local="clr-namespace:StylingProblem">
<Grid>
<Local:Pages x:Name="displayPages"></Local:Pages>
<Button Content="Change Color Button" Height="23" HorizontalAlignment="Left" Margin="149,164,0,0" Name="button1" VerticalAlignment="Top" Width="133" Click="button1_Click" />
</Grid>
</Window>
MainWindow.xaml.cs
public partial class MainWindow : Window
{
ObservableCollection<PageNumber> pageCollection = new ObservableCollection<PageNumber>();
public MainWindow()
{
InitializeComponent();
pageCollection.Add(new PageNumber(" 1 "));
pageCollection.Add(new PageNumber(" 2 "));
pageCollection.Add(new PageNumber(" 3 "));
pageCollection.Add(new PageNumber(" 4 "));
pageCollection.Add(new PageNumber(" 5 "));
pageCollection.Add(new PageNumber(" 6 "));
this.DataContext = this;
}
public ObservableCollection<PageNumber> PageCollection
{
get
{
return this.pageCollection;
}
set
{
this.pageCollection = value;
}
}
private void button1_Click(object sender, RoutedEventArgs e)
{
//Chage Color of Perticular button here
//Suppose say change the color of button with content == " 3 "
#region -- THIS CODE WORKS FINE IF I DON'T PROVIDE ANY STYLE TO BUTTON [see Pages.xaml] --
for (int i = 0; i < displayPages.pageControl.Items.Count; i++)
{
var container = displayPages.pageControl.ItemContainerGenerator.ContainerFromIndex(i) as ContentPresenter;
var button = container.ContentTemplate.FindName("pageNumberButton", container) as Button;
if (button.Content == " 3 ")
{
button.Background = Brushes.Red;
}
}
#endregion
}
Pages.xaml [用户控制]
<UserControl x:Class="StylingProblem.Pages"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
>
<UserControl.Resources>
<ResourceDictionary Source="DataPagerResourceDictionary.xaml"/>
</UserControl.Resources>
<Grid>
<ItemsControl Name="pageControl" ItemsSource="{Binding Path=PageCollection}">
<ItemsControl.Template>
<ControlTemplate TargetType="ItemsControl">
<Border >
<StackPanel>
<ItemsPresenter></ItemsPresenter>
</StackPanel>
</Border>
</ControlTemplate>
</ItemsControl.Template>
<ItemsControl.ItemsPanel x:Uid="pageItemTemplate">
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button x:Name="pageNumberButton" Style="{StaticResource TransparentButton}" Content="{Binding Path=Page_Number}"></Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</UserControl>
风格按钮：DataPagerResourceDictionary.xaml
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
>
<Style TargetType="Button" x:Key="TransparentButton">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border CornerRadius="2,2,2,2" HorizontalAlignment="Center" x:Name="borderTemplate" Background="Transparent">
<ContentPresenter/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="borderTemplate" Property="Border.BorderBrush" Value="Gray" />
<Setter TargetName="borderTemplate" Property="Border.BorderThickness" Value="1" />
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter TargetName="borderTemplate" Property="Border.BorderBrush" Value="Lime" />
</Trigger>
<Trigger Property="IsFocused" Value="true">
<Setter TargetName="borderTemplate" Property="Border.Background" Value="#FD7" />
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="borderTemplate" Property="Border.Background" Value="LightGray"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
由于...................................
Thanks...................................
推荐答案
正在overwritting在样式按钮的模板，所以背景颜色永远不会被使用。
You are overwritting the Button's Template in your Style, so the Background color never gets used
默认按钮模板看起来是这样的：
Default button template looks like this:
<Button Background="SomeColor">
<Button.Content>
</Button>
和你overwritting模板说
And you are overwritting the template to say
<Border>
<Button.Content>
</Border>
您需要将边框的背景颜色绑定到 {TemplateBinding背景} ，以便它使用按钮的背景颜色。
You need to bind the Border's Background color to the {TemplateBinding Background} so that it uses the Button's background color.
我也建议使用 DataTrigger 代替$一个C $ C后面来改变按钮的背景颜色。
I would also suggest using a DataTrigger instead of code behind to change the background color of the button.
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="Transparent" />
<Style.Triggers>
<DataTrigger Binding="{Binding }" Value="3">
<Setter Property="Background" Value="Red" />
</DataTrigger>
</Style.Triggers>
</Style>
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