WPF 窗口自适应

    窗口自适应就是说，当主窗口缩放的时候，内部的控件位置自动的调整，而不是隐藏掉。这主要依赖于Grid布局。

    1.比如这个groupbox 本身是在一个Grid的Row中的。缩放之后，左边的button不见了。 

    开始：

    

    缩放之后：

   

   <GroupBox Name="EmailGroupBox" Grid.Row="1" Grid.Column="0" Header="电子邮件" Margin="0,10,10,10" >
                    <StackPanel Name="Panel"  Orientation="Horizontal">
                        <Grid Name="MinGrid" Width="{Binding ElementName=Panel, Path=ActualWidth}">
                            <Grid.RowDefinitions>
                                <RowDefinition MinHeight="20" Height="Auto"></RowDefinition>
                                <RowDefinition MinHeight="1" Height="*"></RowDefinition>
                            </Grid.RowDefinitions>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition MinWidth="60" Width="Auto"></ColumnDefinition>
                                <ColumnDefinition Width="*" MinWidth="100"></ColumnDefinition>
                                <ColumnDefinition MinWidth="70" Width="Auto" ></ColumnDefinition>
                            </Grid.ColumnDefinitions>
                            <Label Grid.Row="0" Grid.Column="0"  HorizontalAlignment="Left" >邮件地址：</Label>
                            <TextBox   TabIndex="1"  Grid.Row="0" Grid.Column="1" MinWidth="100"  Text="{Binding ServerEmailAddress, UpdateSourceTrigger=LostFocus}"  HorizontalAlignment="Stretch"  VerticalContentAlignment=                            "Center"></TextBox>
                            <Button  Grid.Row="0"  TabIndex="2" Grid.Column="2" HorizontalAlignment="Stretch"  Margin="5 0 5 0"  Click="EmailConfigButton_Click">设置</Button>
                        </Grid>

                    </StackPanel>
                </GroupBox>

拿掉 StackPanel就可以缩放(本身也是多余的代码)。最小宽高都可以省略。因为这里的最小宽度无法阻挡主窗口的缩放，最小宽高直接放到子控件上面就行，不必放在Row或col上面。 2个row也是多余 修改之后：

   <GroupBox Name="EmailGroupBox" Grid.Row="1" Grid.Column="0" Header="电子邮件" Margin="0,10,10,10" >
                    <Grid Name="MinGrid" Width="{Binding ElementName=Panel, Path=ActualWidth}">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition />
                            <ColumnDefinition Width="Auto"/>
                        </Grid.ColumnDefinitions>
                        <Label Grid.Row="0" Grid.Column="0"  HorizontalAlignment="Left" >邮件地址：</Label>
                        <TextBox   TabIndex="1"  Grid.Row="0" Grid.Column="1" MinWidth="100"  Text="{Binding ServerEmailAddress, UpdateSourceTrigger=LostFocus}"  HorizontalAlignment="Stretch"  VerticalContentAlignment="Center"></TextBox>
                        <Button  Grid.Row="0"  TabIndex="2" Grid.Column="2" HorizontalAlignment="Stretch"  Margin="5 0 5 0"  Click="EmailConfigButton_Click">设置</Button>
                    </Grid>
                </GroupBox>

但也不是说StackPanel 就不能缩放。下面的StackPanel是有缩放的效果的。 

 <StackPanel Margin="5" Orientation="Horizontal" Grid.Row="3">
                    <Button   TabIndex="4"  HorizontalAlignment="Left" Click="AddCustomer" Width="62" Height="28" >新建</Button>
                    <Button   HorizontalAlignment="Left" TabIndex="5"  Click="DeleteCustomer"  Width="62" Margin="20,0,0,0" Height="28" VerticalAlignment="Bottom" >删除</Button>
  </StackPanel>

 和groupbox组合的时候要注意。