PROSAGA码农传奇-雾计算/网格计算-在WPF中为Grid列宽创建复杂计算

<div class =“post-text”itemprop =“text”>
  <P>
    我无法想出一种在Xaml中严格执行此操作的方法。
    <BR/>
    
您可以使用MultiBinding作为MaxWidth的
     <code>
      TextBox
    </code>
     在哪里使用以下作为绑定
  </p>
  <UL>
    <LI>
      ActualWidth
       <code>
        Grid
      </code>
    </LI>
    <LI>
      ActualWidth
       <code>
        Button
      </code>
    </LI>
    <LI>
      MinWidth
       <code>
        ProgressBar
      </code>
    </LI>
  </UL>
  <P>
    的<strong>
      XAML
    </强>
  </p>
   <pre>
    <code>
      <Grid Name="grid">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="Auto"/>
        <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>
    <Button Name="button" Grid.Column="0" Content="Cancel"/>
    <TextBox Grid.Column="1" Text="Some Text">
        <TextBox.MaxWidth>
            <MultiBinding Converter="{StaticResource MaxWidthMultiConverter}">
                <Binding ElementName="grid" Path="ActualWidth"/>
                <Binding ElementName="button" Path="ActualWidth"/>
                <Binding ElementName="progressBar" Path="MinWidth"/>
            </MultiBinding>
        </TextBox.MaxWidth>
    </TextBox>
    <ProgressBar Name="progressBar" Grid.Column="2" Value="50" Maximum="100" MinWidth="200"/>
</Grid>

</code>
  </pre>
  <P>
    的<strong>
      MaxWidthMultiConverter
    </强>
  </p>
   <pre>
    <code>
      public class MaxWidthMultiConverter : IMultiValueConverter
{
    public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        double gridWidth = (double)values[0];
        double buttonWidth = (double)values[1];
        double progressBarMaxWidth = (double)values[2];
        return gridWidth - (buttonWidth + progressBarMaxWidth);
    }
    public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

</code>
  </pre>
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