[英]Button border thickness from code behind
我是wpf的新手,現在我正在使用按鈕,因此我想更改按鈕的邊框粗細,但是要從XAML后面的代碼中刪除,接下來要做的是:
var converter = new System.Windows.Media.BrushConverter();
var brush = (Brush)converter.ConvertFromString("#83D744");
btn0.Background = System.Windows.Media.Brushes.Transparent; // This is applied to button
btn0.BorderThickness = new Thickness(1); //Thickness wont apply to button I dont know why
btn0.BorderBrush = brush; //This is also applied to button
由於默認按鈕模板沒有Border屬性,因此您可以訪問更多信息: here 。 因此,如果要在按鈕周圍添加邊框,則必須添加自己的樣式,例如:
<Style x:Key="ButtonStyle" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="Transparent" BorderThickness="0" Background="Transparent">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
在上面的代碼中,所有屬性(例如BorderBrush
, BorderThickness
和Background
都是硬編碼的,您不能從后面的代碼中設置這些屬性。 如果要這樣做,則必須編寫如下樣式:
<Style x:Key="ButtonStyle" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding Property=BorderBrush}" BorderThickness="{TemplateBinding Property=BorderThickness}" Background="{TemplateBinding Property=Background}">
<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
並應用如下樣式:
<Grid>
<Button Name="btnNew" Style="{StaticResource ButtonStyle }" Width="200" Height="50" Click="Button_Click" />
</Grid>
之后,您可以根據需要更改Border的那些屬性,例如:
btnNew.Background = Brushes.Black;
btnNew.BorderThickness = new Thickness(4, 5, 7, 9);
btnNew.BorderBrush = Brushes.Red;
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