我在app.xaml中有一个模板。在运行时,我想创建一个按钮并应用此模板。我还想在运行时设置Image源。
dst
运行时代码:
<Application.Resources>
<ControlTemplate x:Key="btemp2" TargetType="{x:Type Button}">
<Image x:Name="myimage" HorizontalAlignment="Center" Height="84" VerticalAlignment="Center" Width="100" Margin="10,-17.5,7,-24.5" Stretch="UniformToFill"/>
</ControlTemplate>
</Application.Resources>
它没有按预期工作。 断点未到达
Button newButton = new Button();
newButton.Width = 100;
newButton.Height = 50;
newButton.Template = (ControlTemplate)TryFindResource("btemp2");
System.Windows.Controls.Image i = newButton.Template.FindName("myimage",this) as System.Windows.Controls.Image;
Bitmap bmp = GetIconImageFromFile(fileName);
BitmapSource src = GetBitmapImageFromBitmap(bmp);
i.Source = src;
stack.Children.Add(newButton);
答案 0 :(得分:4)
您可以使用Binding
来设置图片。所以你应该改变ControlTemplate
。在该示例中,我们使用Button
Tag
属性来设置图片Source
。
<ControlTemplate x:Key="btemp2" TargetType="{x:Type Button}">
<Image x:Name="myimage" HorizontalAlignment="Center" Height="84" VerticalAlignment="Center" Width="100" Margin="10,-17.5,7,-24.5" Stretch="UniformToFill"
Source="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=Tag}"/>
</ControlTemplate>
Button
创建代码应如下所示。
Button newButton = new Button();
newButton.Width = 100;
newButton.Height = 50;
newButton.Template = ( ControlTemplate )TryFindResource( "btemp2" );
tempGrid.Children.Add( newButton );
BitmapImage image = new BitmapImage(new Uri("pack://application:,,,/WPFTest;component/Images/GPlus.png"));
newButton.Tag = image;
答案 1 :(得分:1)
删除this
,并在下面的代码中使用newButton
,并处理已加载的事件:
Grd.Children.Add(newButton);
newButton.Loaded += newButton_Loaded;
...
void newButton_Loaded(object sender, RoutedEventArgs e)
{
Image img = (Image)newButton.Template.FindName("myimage", newButton);
...
}