关于wpf窗体里面的小窗口，可以拖动大小
楼主的实训作业就是想把上图的
TreeView做成可以拖动大小的
下面是布局代码，有点长
<Window x:Class="CustomerManage.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="428" Width="525">
<Grid>
<Menu Height="26" VerticalAlignment="Top">
</Menu>
<TabControl Margin="0,30,0,0">
<!--客户信息-->
<TabItem Header="客户信息">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Center" VerticalAlignment="Top" Height="300" Margin="0,10,0,0">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Button Content="添 加" Width="80" Margin="3,10,3,10" />
<Button Content="删 除" Grid.Row="1" Width="80" Margin="3,10,3,10" />
<Button Content="修 改" Grid.Row="2" Width="80" Margin="3,10,3,10" />
<Button Content="查 找" Grid.Row="3" Width="80" Margin="3,10,3,10" />
<Button Content="按部门显示" Grid.Row="4" Width="80" Margin="3,10,3,10" />
<Button Content="按公司显示" Grid.Row="5" Width="80" Margin="3,10,3,10" />
<Border BorderBrush="Silver" BorderThickness="2" Grid.RowSpan="6"/>
</Grid>
<DataGrid Grid.Column="1" Margin="2,10,2,2"/>
</Grid>
</TabItem>
<!--员工信息-->
<TabItem Header="员工信息">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Center" VerticalAlignment="Top" Height="200" Margin="0,10,0,0">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Button Content="添 加" Width="80" Margin="3,10,3,10" />
<Button Content="删 除" Grid.Row="1" Width="80" Margin="3,10,3,10" />
<Button Content="修 改" Grid.Row="2" Width="80" Margin="3,10,3,10" />
<Button Content="查 找" Grid.Row="3" Width="80" Margin="3,10,3,10" />
<Border BorderBrush="Silver" BorderThickness="2" Grid.RowSpan="4"/>
</Grid>
<DataGrid Grid.Column="1" Margin="2,10,2,2"/>
</Grid>
</TabItem>
<!--详细信息-->
<TabItem Header="详细信息">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<!--
<Grid HorizontalAlignment="Center" VerticalAlignment="Top" Height="300" Margin="0,10,0,0">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Button Content="添 加" Width="80" Margin="3,10,3,10" />
<Button Content="删 除" Grid.Row="1" Width="80" Margin="3,10,3,10" />
<Button Content="修 改" Grid.Row="2" Width="80" Margin="3,10,3,10" />
<Button Content="查 找" Grid.Row="3" Width="80" Margin="3,10,3,10" />
<Button Content="按部门显示" Grid.Row="4" Width="80" Margin="3,10,3,10" />
<Button Content="按公司显示" Grid.Row="5" Width="80" Margin="3,10,3,10" />
<Border BorderBrush="Silver" BorderThickness="2" Grid.RowSpan="6"/>
</Grid>
-->
<TreeView Margin="3,10,3,2">
<TreeViewItem Header="数据操作">
<TreeViewItem Header="添加"/>
<TreeViewItem Header="删除"/>
<TreeViewItem Header="修改"/>
<TreeViewItem Header="查找"/>
</TreeViewItem>
<TreeViewItem Header="显示">
<TreeViewItem Header="按部门显示"/>
<TreeViewItem Header="按单位显示"/>
</TreeViewItem>
</TreeView>
<GridSplitter Grid.Row="0" Grid.Column="0"
Margin="0,0,0,0" HorizontalAlignment="Stretch" VerticalAlignment="Top"
ShowsPreview="True"
/>
<DataGrid Grid.Column="1" Margin="2,10,2,2"/>
</Grid>
</TabItem>
</TabControl>
</Grid>
</Window>
