在代码中动态设置控件的StaticResource样式
本文关键字:StaticResource 样式 控件 设置 代码 动态 | 更新日期: 2023-09-27 18:20:14
比方说,我有这样的东西(在MainPage.xaml中):
<Page.Resources>
<Style TargetType="TextBlock" x:Key="TextBlockStyle">
<Setter Property="FontFamily" Value="Segoe UI Light" />
<Setter Property="Background" Value="Navy" />
</Style>
</Page.Resources>
然后,我想将StaticResource样式应用于我动态创建的TextBlock(文件MainPage.xaml.cs)
有没有可能这样做而不是这样做:
myTextBlock.FontFamily = new FontFamily("Segoe UI Light");
myTextBlock.Background = new SolidColorBrush(Color.FromArgb(255,0,0,128));
问这个问题已经4年多了,但我想发布一个答案来分享我的发现。
例如,如果App.xaml
(Xamarin跨平台应用程序开发)中的应用程序资源中描述了一个Style
BlueButton
,则可以按以下使用
<?xml version="1.0" encoding="utf-8" ?><Application xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="SharedUi.App">
<Application.Resources>
<ResourceDictionary>
<Style x:Key="BlueButton" TargetType="Button">
<Setter Property="TextColor" Value="White" />
<Setter Property="FontSize" Value="20" />
<Setter Property="BackgroundColor" Value="Blue"/>
<Setter Property="HeightRequest" Value="70"/>
<Setter Property="FontAttributes" Value="Bold"/>
</Style>
</ResourceDictionary>
</Application.Resources></Application>
然后在后面的代码中
Button newButton1 = new Button
{
Text = "Hello",
WidthRequest = (double)15.0,
Style = (Style)Application.Current.Resources["BlueButton"]
};
你可以设置,像这样的东西,
TextBlock myTextBlock= new TextBlock ()
{
FontFamily = new FontFamily("Segoe UI Light");
Style = Resources["TextBlockStyle"] as Style,
};
您可以使用这个:
Style textBlockStyle;
try
{
textBlockStyle = FindResource("TextBlockStyle") as Style;
}
catch(Exception ex)
{
// exception handling
}
if(textBlockStyle != null)
{
myTextBlock.Style = textBlockStyle;
}
或TryFindResource
方法:
myTextBlock.Style = (Style)TryFindResource("TextBlockStyle");
private void initializedynamicButton()
{
pnlContent.Children.Clear();
for (int i = 0; i < 25; i++)
{
Button btn = new Button();
btn.Style = (Style)this.FindResource("GelButton");
btn.Content = new
{
Text = "ButtonName_"+i.ToString(),
ImagePath = "",
Margin = new Thickness(0, 0, 0, 10)
};
btn.Tag = new { GroupID = i };
btn.Click += new RoutedEventHandler(btn_Click);
pnlContent.Children.Add(btn);
}
}