[英]How to programmatically maintain aspect ratio of object in wpf
I programmatically add a Border
with a certain width and height to a grid.我以编程方式将具有特定宽度和高度的Border
添加到网格中。 However, I want to get either one of the following:但是,我想获得以下任一项:
At the moment this is the situation when I resize my window:目前这是我调整窗口大小时的情况:
Color borderColor = (Color)ColorConverter.ConvertFromString(BorderColor);
Color backgroundColor = (Color)ColorConverter.ConvertFromString(BackgroundColor);
Border border = new Border();
border.BorderThickness = new Thickness(BorderSize);
border.CornerRadius = new CornerRadius(TopLeftCornerRadius, TopRightCornerRadius, BottomRightCornerRadius, BottomLeftCornerRadius);
border.BorderBrush = (SolidColorBrush)(new BrushConverter().ConvertFrom(BorderColor));
border.Background = (SolidColorBrush)(new BrushConverter().ConvertFrom(BackgroundColor));
border.Width = Width;
border.Height = Height;
border.Margin = new Thickness(10);
previewgrid.Children.Add(border);
The normal situation:正常情况:
The scaled situation:规模化情况:
So I would like it to resize properly and stay inside the white rectangle.所以我希望它正确调整大小并留在白色矩形内。 By the way, the white grid has a margin as you can see ;-) Thanks in advance!顺便说一下,正如您所看到的,白色网格有一个边距 ;-) 提前致谢!
As lerthe61 suggested, just use a Viewbox with its Stretch
property set to Uniform
:正如 lerthe61 建议的那样,只需使用一个Viewbox其Stretch
属性设置为Uniform
:
Color borderColor = (Color)ColorConverter.ConvertFromString(BorderColor);
Color backgroundColor = (Color)ColorConverter.ConvertFromString(BackgroundColor);
Border border = new Border();
border.BorderThickness = new Thickness(BorderSize);
border.CornerRadius = new CornerRadius(TopLeftCornerRadius, TopRightCornerRadius, BottomRightCornerRadius, BottomLeftCornerRadius);
border.BorderBrush = (SolidColorBrush)(new BrushConverter().ConvertFrom(BorderColor));
border.Background = (SolidColorBrush)(new BrushConverter().ConvertFrom(BackgroundColor));
border.Width = Width;
border.Height = Height;
border.Margin = new Thickness(10);
Viewbox viewBox = new Viewbox();
viewBox.Stretch = Stretch.Uniform;
viewBox.Child = border;
previewgrid.Children.Add(viewBox);
Please, note that this solution does not work if previewgrid
is a Canvas
.请注意,如果previewgrid
是Canvas
,则此解决方案不起作用。 I hope it can help you.我希望它能帮助你。
The simplest way:最简单的方法:
<Grid Margin="50">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="50" />
</Grid.ColumnDefinitions>
<Border CornerRadius="50,0,0,50"
Background="Green" />
<Border CornerRadius="0"
Grid.Column="1"
Background="Green" />
<Border CornerRadius="0,50,50,0"
Grid.Column="2"
Background="Green" />
</Grid>
By C#:通过 C#:
myGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(50) });
myGrid.ColumnDefinitions.Add(new ColumnDefinition());
myGrid.ColumnDefinitions.Add(new ColumnDefinition { Width = new GridLength(50) });
Border b1 = new Border
{
Background = new SolidColorBrush(Colors.Blue),
CornerRadius = new CornerRadius(100, 0, 0, 100)
};
Grid.SetColumn(b1, 0);
Border b2 = new Border
{
Background = new SolidColorBrush(Colors.Blue),
};
Grid.SetColumn(b2, 1);
Border b3 = new Border
{
Background = new SolidColorBrush(Colors.Blue),
CornerRadius = new CornerRadius(0, 100, 100, 0),
};
Grid.SetColumn(b3, 2);
myGrid.Children.Add(b1);
myGrid.Children.Add(b2);
myGrid.Children.Add(b3);
Normal:普通的:
Is it good enough for you?对你来说足够好吗?
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