我正在嘗試將數據網格添加到主控件寬度設置為拉伸的 UserControl?？丶惶砑拥街髅姘迳系?StackPanel 中，我希望控件的寬度可以拉伸。我的數據網格設置了寬度，但除非我在用戶控件上定義寬度，否則所有列都會縮小到大約 10 像素。<Expander Header="Issues" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Margin="4,86,4,4" VerticalAlignment="Stretch" IsExpanded="False">    <Grid Background="#FFE5E5E5" HorizontalAlignment="Stretch" Width="Auto">        <DataGrid x:Name="dg_issues" CanUserResizeRows="False" CanUserReorderColumns="False" CanUserAddRows="False" CanUserDeleteRows="False" CanUserSortColumns="False" CanUserResizeColumns="True" HorizontalAlignment="Stretch" AutoGenerateColumns="False" HeadersVisibility="Column" SelectionMode="Single">             <DataGrid.Columns>                 <DataGridTextColumn Header="ID" Binding="{Binding Key}" Width="60"/>                 <DataGridTextColumn Header="Status" Binding="{Binding Status}" Width="60"/>                 <DataGridTextColumn Header="Summary" Binding="{Binding Summary}" Width="*"/>                <DataGridTextColumn Header="Time Spent" Binding="{Binding TimeSpent}" Width="70"/>                <DataGridTextColumn Header="Remaining" Binding="{Binding Remaining}" Width="70"/>            </DataGrid.Columns>        </DataGrid>    </Grid></Expander>