SyleProblem:无法更改特定按钮的BackGround吗? [英] SyleProblem: Can't Change BackGround Of Particular button ?
本文介绍了SyleProblem:无法更改特定按钮的BackGround吗?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
1.我有一个==> UserControl.
2.在该UserControl ==>中一个ItemsControl.
现在ItemsControl根据给定的ItemsSource 生成Button’s.
我为这些按钮提供了一些样式.
==> Pages.xaml中的按钮.
==> DataPagerResourceDictionary.xaml中的样式和样式.
我在Maindwindow.xaml中使用了UserControl.
但我无法根据按钮的内容更改特定按钮的Background.
您可以从此处
下载完整代码.
如果我不为按钮提供样式，则下面的代码可以正常工作.
[仅当我为按钮提供样式时才出现问题，请看下面的代码片段]
1. I have one ==> UserControl.
2. Inside that UserControl ==> One ItemsControl.
Now ItemsControl generating Button’s As per ItemsSource given to it.
I have given some style for those buttons .
==> Button''s inside Pages.xaml.
==> and Style inside DataPagerResourceDictionary.xaml.
I have using UserControl inside my Maindwindow.xaml.
but i can''t change Background of Particular Button based on Content Of Button.
You can download Complete Code from Here
This below code works fine if I do not provide style to button.
[the problem only arise if i provide style to button, have a look at below code snippets]
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;
}
}
我在下面的代码片段中提供了 style to button
[外观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>
........
您可以下载代码或查看以下代码:
MainWindow.xaml
you can download 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
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]
Pages.xaml [USER CONTROL]
<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>
按钮样式:DataPagerResourceDictionary.xaml
STYLE OF BUTTON: 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>
谢谢.........
Thanks.........
推荐答案
您不能更改背景，因为您的控件模板不尊重background属性.您无需在模板中设置Background ="Transparent"，而是需要使用TemplateBinding绑定到按钮的实际Background属性.
*编辑*
啊，好眼睛-我错过了问题.也许这...
You can''t change the background because your control template doesn''t respect the background property. Instead of setting Background = "Transparent" in your template, you need to use TemplateBinding to bind to the actual Background property of the button.
*Edit*
Ah, good eye - I missed the problem. Maybe this...
<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="{TemplateBinding Background}">
<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>
<Setter Property="Background" Value="Transparent" />
</Style>
这篇关于SyleProblem:无法更改特定按钮的BackGround吗?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IT屋！
查看全文
