[英]WPF usercontrol out of bounds of the Grid
I have a WPF app that I'm testing which loads a XML and visualizes it in a usercontrol. 我有一个正在测试的WPF应用程序,该应用程序加载XML并将其可视化在用户控件中。 Now the issue I'm having is that every time I load my user control the
HorizontalAlignment
is okay, but the VerticalAlignment
doesn't adept to the height size of the usercontrol. 现在我遇到的问题是,每次加载用户控件时,
HorizontalAlignment
都可以,但是VerticalAlignment
并不能适应用户控件的高度大小。
Anyone has an idea how to solve this? 有人知道如何解决这个问题吗?
MainWindow.xaml MainWindow.xaml
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:UserControls="clr-namespace:RackBuildingTesT.UserControls" x:Class="RackBuildingTesT.MainWindow"
Title="MainWindow" Height="578" Width="758" SizeChanged="Window_SizeChanged_1">
<Grid>
<DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Border DockPanel.Dock="Top" BorderBrush="Black" BorderThickness="1">
<Grid>
<Label Content="Welke rack laden" HorizontalAlignment="Left" VerticalAlignment="Top"/>
<ComboBox x:Name="RackChooser" HorizontalAlignment="Left" Margin="100,0,0,0" VerticalAlignment="Top" Width="120" SelectionChanged="RackChooser_SelectionChanged"/>
</Grid>
</Border>
<Border DockPanel.Dock="Top" BorderBrush="Black" BorderThickness="1">
<Grid x:Name="RackGrid" Margin="0,0,0,0">
</Grid>
</Border>
</DockPanel>
</Grid>
MainWindow.xaml.cs MainWindow.xaml.cs
public MainWindow()
{
InitializeComponent();
LoadRackCombo();
}
private void LoadRackCombo()
{
var files = Directory.GetFiles(Properties.Settings.Default.FilePathXMLRack);
foreach (var item in files)
{
RackChooser.Items.Add(item);
}
}
private void RackChooser_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
this.RackGrid.Children.Clear();
this.Cursor = Cursors.Wait;
if (RackChooser.SelectedIndex == -1)
MessageBox.Show("Select a rack");
else
{
string rackFile = Convert.ToString(RackChooser.Items[RackChooser.SelectedIndex]);
UserControls.RackBuilder r = new UserControls.RackBuilder();
RackGrid.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
RackGrid.VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
r.Width = RackGrid.Width;
r.Height = RackGrid.Height;
var _r = TRack.CreateFromXMLFile(rackFile, null);
r.set_Rack(_r);
RackGrid.Children.Add(r);
}
this.Cursor = Cursors.Arrow;
}
private void Window_SizeChanged_1(object sender, SizeChangedEventArgs e)
{
RackGrid.Width = this.Width;
RackGrid.Height = this.Height;
}
RackBuilder.xaml.cs (xaml page is standard WPF usercontrol) RackBuilder.xaml.cs(xaml页面是标准的WPF用户控件)
public RackBuilder()
{
InitializeComponent();
}
public TRack fRack { get; set; }
public void set_Rack(TRack value)
{
this.fRack = value;
this.InvalidateVisual();
}
protected override void OnRender(DrawingContext drawingContext)
{
if (this.fRack != null)
{
var xScale = this.Width / this.fRack.Size.Width;
var yScale = this.Height / this.fRack.Size.Height;
var smallest = 0.0;
if (xScale < yScale)
smallest = xScale;
else
smallest = yScale;
foreach (var hole in this.fRack.HolePositions)
{
drawingContext.DrawEllipse(Brushes.Aquamarine, null, new Point(hole.Position.X * xScale, hole.Position.Y * yScale),
hole.Diameter * smallest * 0.5, hole.Diameter * smallest * 0.5);
}
}
}
Result 结果
Instead of adding your Control to a Grid
, use the ContentControl and add it to its Content-Property. 不用将控件添加到
Grid
,而是使用ContentControl并将其添加到其Content-Property中。 It also stretches its child automatically. 它还会自动拉伸孩子。
我通过将MainWindow SizeToContent
为WidthAndHeight
修复了它。
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