<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:views="clr-namespace:NewLife.Studio.Modules.DataStudio.Views"
             x:Class="NewLife.Studio.Modules.DataStudio.Views.DataStudioView">
    <Grid ColumnDefinitions="250,*" Margin="4">
        <!-- 左侧: 连接列表 + 对象树 -->
        <Grid Grid.Column="0" RowDefinitions="Auto,*,Auto">
            <views:ConnectionListView Grid.Row="0" x:Name="ConnectionListControl" />
            <views:ObjectTreeView Grid.Row="1" x:Name="ObjectTreeControl" Margin="0,4,0,0" />
        </Grid>

        <!-- 右侧: SQL 编辑器 + 结果网格 -->
        <views:SqlEditorView Grid.Column="1" x:Name="SqlEditorControl" Margin="4,0,0,0" />
    </Grid>
</UserControl>