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我喜歡綁定到GridSplitter的Grid-Column的MaxWidth。 如果我在XAML中使用硬編碼的MaxWidth，一切正常，但如果我使用綁定到代碼隱藏它將不再工作。綁定到寬度本身正在工作（可以通過按下按鈕來測試）。GridSplitter - 綁定到maxWidth不起作用
綁定不工作：
<ColumnDefinition Name="gs_c1" MaxWidth="{Binding Path=GsC1_maxWidth, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}" Width="{Binding Path=GsC1_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
MaxWidth工作：
<ColumnDefinition Name="gs_c3" MaxWidth="150" Width="{Binding Path=GsC3_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
XAML：
<Window x:Class="GridSplitter_02.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:GridSplitter_02"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="1525">
<Grid>
<Grid.Resources>
<local:DoubleGridLengthConverter x:Key="DoubleGridLengthConverter"/>
</Grid.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="20" />
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button Grid.Row="0" Click="Button_Click">Reset width</Button>
<Grid Grid.Row="1" Margin="15">
<Grid.ColumnDefinitions>
<ColumnDefinition Name="gs_c0" Width="{Binding Path=GsC0_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
<!--Binding to the maxWidth does not work-->
<ColumnDefinition Name="gs_c1" MaxWidth="{Binding Path=GsC1_maxWidth, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}" Width="{Binding Path=GsC1_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
<ColumnDefinition Width="5" />
<ColumnDefinition Name="gs_c2" Width="{Binding Path=GsC2_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
<!--MaxWidth is working here-->
<ColumnDefinition Name="gs_c3" MaxWidth="150" Width="{Binding Path=GsC3_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
<ColumnDefinition Width="5" />
<ColumnDefinition Name="gs_c4" Width="{Binding Path=GsC4_width, Mode=TwoWay, Converter={StaticResource DoubleGridLengthConverter}}"/>
</Grid.ColumnDefinitions>
<Rectangle Grid.Column="0" Fill="Blue" />
<Grid Grid.Column="1">
<Rectangle Fill="LightBlue" />
<TextBlock>Text</TextBlock>
</Grid>
<GridSplitter Grid.Column="2" Background="Black" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="5" />
<Rectangle Grid.Column="3" Fill="Red" />
<Grid Grid.Column="4">
<Rectangle Fill="LightCoral" />
<TextBlock>Text</TextBlock>
</Grid>
<GridSplitter Grid.Column="5" Background="Black" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="5" />
<Rectangle Grid.Column="6" Fill="Gray" />
</Grid>
</Grid>
</Grid>
</Window>
代碼隱藏：
namespace GridSplitter_02
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window, INotifyPropertyChanged
{
#region Width
public double GsC0_width
{
get
{
return _gsC0_width;
}
set
{
_gsC0_width = value;
CalcSpace();
OnPropertyChanged("GsC0_width");
}
}
private double _gsC0_width;
public double GsC1_width
{
get
{
return _gsC1_width;
}
set
{
_gsC1_width = value;
CalcSpace();
OnPropertyChanged("GsC1_width");
}
}
private double _gsC1_width;
public double GsC2_width
{
get
{
return _gsC2_width;
}
set
{
_gsC2_width = value;
CalcSpace();
OnPropertyChanged("GsC2_width");
}
}
private double _gsC2_width;
public double GsC3_width
{
get
{
return _gsC3_width;
}
set
{
_gsC3_width = value;
CalcSpace();
OnPropertyChanged("GsC3_width");
}
}
private double _gsC3_width;
public double GsC4_width
{
get
{
return _gsC4_width;
}
set
{
_gsC4_width = value;
OnPropertyChanged("GsC4_width");
}
}
private double _gsC4_width;
#endregion
#region maxWidth
public double GsC0_maxWidth
{
get
{
return _gsC0_maxWidth;
}
set
{
_gsC0_maxWidth = value;
OnPropertyChanged("GsC0_maxWidth");
}
}
private double _gsC0_maxWidth;
public double GsC1_maxWidth
{
get
{
return _gsC1_maxWidth;
}
set
{
_gsC1_maxWidth = value;
OnPropertyChanged("GsC1_maxWidth");
}
}
private double _gsC1_maxWidth = 150;
public double GsC2_maxWidth
{
get
{
return _gsC2_maxWidth;
}
set
{
_gsC2_maxWidth = value;
OnPropertyChanged("GsC2_maxWidth");
}
}
private double _gsC2_maxWidth;
public double GsC3_maxWidth
{
get
{
return _gsC3_maxWidth;
}
set
{
_gsC3_maxWidth = value;
OnPropertyChanged("GsC3_maxWidth");
}
}
private double _gsC3_maxWidth;
public double GsC4_maxWidth
{
get
{
return _gsC4_maxWidth;
}
set
{
_gsC4_maxWidth = value;
OnPropertyChanged("GsC4_maxWidth");
}
}
private double _gsC4_maxWidth;
#endregion
private double _maxSpace = 1500;
public MainWindow()
{
InitializeComponent();
SetWidth();
this.DataContext = this;
}
private void CalcSpace()
{
GsC4_width = _maxSpace - GsC0_width - GsC1_width - GsC2_width - GsC3_width;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
SetWidth();
}
private void SetWidth()
{
GsC0_width = 15;
GsC1_width = 15;
GsC1_maxWidth = 150;
GsC2_width = 500;
GsC3_width = 100;
GsC3_maxWidth = 400;
CalcSpace();
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
}
轉換器：
namespace GridSplitter_02
{
public class DoubleGridLengthConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return new GridLength((double)value);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
GridLength gridLength = (GridLength)value;
return gridLength.Value;
}
}
}