WPF Grid不显示滚动条

在.NET 3.5中，我在窗口中有一个Grid。我用按钮填充这个网格。当按钮填充网格并离开视图时，网格不显示滚动条。我已将网格垂直滚动设置为可见，但仍未显示。WPF Grid不显示滚动条

<Window x:Name="Window" x:Class="MergeToCheck.CheckList" 
      xmlns:sys="clr-namespace:System;assembly=mscorlib" 
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      mc:Ignorable="d" Loaded="Window_Loaded" ScrollViewer.VerticalScrollBarVisibility="Disabled" 
       ResizeMode="NoResize" ShowInTaskbar="False" Topmost="True" WindowStyle="None" 
     Height="671" Width="846.299" BorderThickness="5"> 

    <Grid> 
     <Grid x:Name="MyGrid" HorizontalAlignment="Left" Height="535" VerticalAlignment="Top" Width="736" Margin="10,63,0,0" ScrollViewer.CanContentScroll="True" ScrollViewer.HorizontalScrollBarVisibility="Visible"> 
      <Grid.Resources> 
       <Style TargetType="{x:Type Panel}"> 
        <Setter Property="Margin" Value="0,0,0,6" /> 
       </Style> 
      </Grid.Resources> 
      <Grid.ColumnDefinitions> 
       <ColumnDefinition/> 
       <ColumnDefinition/> 
       <ColumnDefinition/> 
       <ColumnDefinition/> 
       <ColumnDefinition/> 
      </Grid.ColumnDefinitions> 
     </Grid>   
    </Grid> 
</Window>

它增加了按钮的代码：

 CheckList CheckListCtrl = new CheckList(); 

     System.Windows.Controls.Button btn; 
     int row = 0; 
     int col = 0; 

     CheckListCtrl.MyGrid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(100) }); 

     foreach(var c in list) 
     { 
      btn = new System.Windows.Controls.Button(); 
      btn.FontSize = 15; 
      btn.FontWeight = FontWeights.UltraBold; 
      btn.Content = c.Name; 
      btn.Style = System.Windows.Application.Current.FindResource(System.Windows.Controls.ToolBar.ButtonStyleKey) as Style; 
      btn.BorderBrush = new SolidColorBrush(Colors.Black); 
      btn.BorderThickness = new Thickness(2); 
      btn.MinWidth = 145; 
      btn.MaxWidth = 145; 
      btn.MinHeight = 95; 
      btn.MaxHeight = 95; 

      btn.SetValue(Grid.RowProperty, row); 
      btn.SetValue(Grid.ColumnProperty, col); 

      CheckListCtrl.MyGrid.Children.Add(btn); 

      if ((col + 1) % CheckListCtrl.MyGrid.ColumnDefinitions.Count == 0) 
      {      
       col = 0; 
       row++; 
       CheckListCtrl.MyGrid.RowDefinitions.Add(new RowDefinition() { Height = new GridLength(100) }); 
      } 
      else 
       col++; 
     }

来源

2014-11-04 CathalMF

如果您的网格有足够的空间来显示所有项目，滚动条将不会出现。滚动条仅在物品多于空间时出现。你确定网格中有更多的项目比空间吗？ – Sonhja 2014-11-04 14:12:50

是的，即时100％肯定它已经空间不足，但如果我设置ScrollViewer.HorizontalScrollBarVisibility =“可见”，它应该始终显示滚动条，无论它是否有足够的空间。 – CathalMF 2014-11-04 14:15:28

网格不包含任何类型的滚动条。如果你想滚动，你需要'ScrollViewer'像' ...' – dkozl 2014-11-04 14:31:38

Grid不支持滚动功能。如果你要滚动的东西，你需要ScrollViewer控制

<ScrollViewer HorizontalScrollBarVisibility="Visible"> 
    <Grid x:Name="MyGrid" HorizontalAlignment="Left" Height="535" VerticalAlignment="Top" Width="736" Margin="10,63,0,0"> 
     <Grid.Resources> 
     <Style TargetType="{x:Type Panel}"> 
      <Setter Property="Margin" Value="0,0,0,6" /> 
     </Style> 
     </Grid.Resources> 
     <Grid.ColumnDefinitions> 
     <ColumnDefinition/> 
     <ColumnDefinition/> 
     <ColumnDefinition/> 
     <ColumnDefinition/> 
     <ColumnDefinition/> 
     </Grid.ColumnDefinitions> 
    </Grid>   
</ScrollViewer>

来源

2014-11-04 14:55:14 dkozl

太好了。有用。 – Zeeshan 2015-12-12 06:10:08

WPF Grid不显示滚动条

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