我有中的列由ObservableCollection
设置,它是我创建的简单数据对象的类型。第一列的宽度设置为“自动”,第二列的宽度设置为“1 *”。WPF Datagrid列宽问题
我目前在回答here中使用该方法来自动更新我的列的宽度,当ItemsSource
更改时,该列的宽度设置为“自动”。这似乎工作的大部分时间:
这看起来不错,和所有工作的时间
虽然,当ItemsSource
有点大(可以说约30-35条记录)时, “自动” 宽度(第一)列将收缩向下仅当DataGrid
(包括滚动条)是点击:
这将是适当的调整,如果没有被点击它
我的XAML看起来像这样:
<my:DataGrid CanUserSortColumns="false" CanUserResizeRows="false" CanUserResizeColumns="false" CanUserReorderColumns="false" CanUserDeleteRows="false" CanUserAddRows="false" AutoGenerateColumns ="False" SelectionMode="Single" SelectionUnit="Cell" Height="113" HorizontalAlignment="Left" Margin="11,22,0,0" Name="dataGrid" VerticalAlignment="Top" Width="226" Background="#FFE2E2E2" AlternatingRowBackground="#FFA4CFF2" BorderBrush="#FF7C7C7C" HorizontalGridLinesBrush="White" PreviewKeyDown="dataGrid_PreviewKeyDown" CellEditEnding="dataGrid_CellEditEnding" BeginningEdit="dataGrid_BeginningEdit" PreparingCellForEdit="dataGrid_PreparingCellForEdit" SelectedCellsChanged="dataGrid_SelectedCellsChanged" Loaded="dataGrid_Loaded" TargetUpdated="dataGrid_TargetUpdated">
<my:DataGrid.Columns>
<my:DataGridTextColumn Binding="{Binding Path=Name, NotifyOnTargetUpdated=True}" Width="Auto">
<my:DataGridTextColumn.CellStyle>
<Style TargetType="{x:Type my:DataGridCell}">
<Setter Property="KeyboardNavigation.IsTabStop" Value="False"></Setter>
<Setter Property="IsHitTestVisible" Value="False"></Setter>
<Setter Property="Focusable" Value="False"></Setter>
<Setter Property="Background" Value="WhiteSmoke"></Setter>
<Setter Property="BorderBrush" Value="LightGray"></Setter>
</Style>
</my:DataGridTextColumn.CellStyle>
</my:DataGridTextColumn>
<my:DataGridTextColumn Binding="{Binding Path=Value}" Width="1*"></my:DataGridTextColumn>
</my:DataGrid.Columns>
</my:DataGrid>
的代码,以确保该列的更新:
private void dataGrid_TargetUpdated(object sender, DataTransferEventArgs e)
{
dataGrid.Columns[0].Width = 0;
dataGrid.UpdateLayout();
dataGrid.Columns[0].Width = new DataGridLength(0, DataGridLengthUnitType.Auto);
dataGrid.UpdateLayout();
}
是有没有什么理由可能会发生,只有当名单更长这样?