电网分离器和了minWidth [英] Grid Splitter and MinWidth

问题描述

我想设置一个了minWidth 我的列。

了minWidth 可以正确处理列 0，但是并不列 2.分路器只是不断我拖，可以得到列小于申报了minWidth
的似乎了minWidth 来才能生效，如果列宽有一个数值，而不是自动....有没有一种方法来获取与自动工作或刚 * ??

任何想法？

 <！ - 内容区 - > 
<电网X：NAME =ContentGrid
 Grid.Row =2> 
< Grid.ColumnDefinitions> 
< ColumnDefinition了minWidth =32WIDTH =260/> 
< ColumnDefinition WIDTH =8/> 
< ColumnDefinition了minWidth =100WIDTH =*/> 
< /Grid.ColumnDefinitions> 
 
<！ - 导航 - > 
将; ItemsControl的名称=NavigationRegion
区域：RegionManager.RegionName =NavigationRegion
 Grid.Column =0> 
< ItemsControl.ItemsPanel> 
< ItemsPanelTemplate> 
<网/> 
< / ItemsPanelTemplate> 
< /ItemsControl.ItemsPanel> 
< / ItemsControl的> 
<！ - 分配器 - > 
<控制：GridSplitter X：NAME =GridSplitter
 Grid.Column =1
 VerticalAlignment =拉伸
的Horizo​​ntalAlignment =中心
背景={StaticResource的SplitterBackgroundColor}
宽度=8
 UseLayoutRounding =真
了borderThickness =1
 BorderBrush =黑
高度=自动/> 
<！ - 表 - > 
< ItemsControl的X：名称=MainRegion
 Grid.Column =2
区：RegionManager.RegionName =MainRegion> 
< ItemsControl.ItemsPanel> 
< ItemsPanelTemplate> 
<网/> 
< / ItemsPanelTemplate> 
< /ItemsControl.ItemsPanel> 
< / ItemsControl的> 
 
 
< /网格和GT; 
  

解决方案

我解决这个问题的方法是设置一个了maxWidth 为列 0
当时，SizeChanged 激发我获得列 0基于当前 ActualWidth的了maxWidth 价值>

于是我打消了我的了minWidth 从列 2为好。这里的修改：

 <  - 内容区 - > 
<电网X：NAME =ContentGrid
 Grid.Row =2> 
< Grid.ColumnDefinitions> 
< ColumnDefinition了minWidth =32WIDTH =260/> 
< ColumnDefinition WIDTH =8/> 
< ColumnDefinition WIDTH =*/> 
< /Grid.ColumnDefinitions> 
 
 ... 
  

那么事件设置了maxWidth

  this.SizeChanged + =（S，E）=> 
 {
双了maxWidth = this.ActualWidth / 2.0; 
 this.ContentGrid.ColumnDefinitions [0] = .MaxWidth了maxWidth; 
} 
  

I am trying to set a MinWidth for my columns.

MinWidth works correctly for Column 0 but not Column 2. The splitter just keeps dragging and I can get the Column to be less than the declared MinWidth The MinWidth seems to only take effect if the Column Width has a numeric value rather than Auto.... Is there a way to get that to work with Auto or just * ??

Any ideas?

    <!-- Content Area -->
    <Grid x:Name="ContentGrid"
          Grid.Row="2">
        <Grid.ColumnDefinitions>
            <ColumnDefinition MinWidth="32" Width="260"/>
            <ColumnDefinition Width="8" />
            <ColumnDefinition MinWidth="100" Width="*" />
        </Grid.ColumnDefinitions>

        <!-- Navigation  -->
        <ItemsControl Name="NavigationRegion" 
                  Regions:RegionManager.RegionName="NavigationRegion"
                  Grid.Column="0">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <Grid/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
        <!-- Splitter -->
        <controls:GridSplitter x:Name="GridSplitter" 
                               Grid.Column="1" 
                               VerticalAlignment="Stretch" 
                               HorizontalAlignment="Center" 
                               Background="{StaticResource SplitterBackgroundColor}" 
                               Width="8" 
                               UseLayoutRounding="True" 
                               BorderThickness="1"     
                               BorderBrush="Black"  
                               Height="Auto"/>
        <!-- Form -->
        <ItemsControl x:Name="MainRegion"
                      Grid.Column="2" 
                      Regions:RegionManager.RegionName="MainRegion">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <Grid/>
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>


    </Grid>

解决方案

The way I fixed this is to set a MaxWidth for Column 0. When SizeChanged fires I get the MaxWidth value for Column 0 based upon the current ActualWidth

So I removed my MinWidth from Column 2 as well. Here's the modifications:

<!-- Content Area -->
<Grid x:Name="ContentGrid"
      Grid.Row="2">
    <Grid.ColumnDefinitions>
        <ColumnDefinition MinWidth="32" Width="260"/>
        <ColumnDefinition Width="8" />
        <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>

...

Then the Event setting MaxWidth

this.SizeChanged += (s, e) =>
{
    double maxWidth = this.ActualWidth / 2.0;
    this.ContentGrid.ColumnDefinitions[0].MaxWidth = maxWidth;
}

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