WPF(Grid与布局）

<Window x:Class="TestOfGridLayout.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="留言板" Height="240" Width="400"
        MinHeight="200" MaxHeight="300" MinWidth="350" MaxWidth="600">
    <Grid Margin="10">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" MinWidth="120"/>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="80"/>
            <ColumnDefinition Width="4" />
            <ColumnDefinition Width="80"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="25"/>
            <RowDefinition Height="4" />
            <RowDefinition Height="*" />
            <RowDefinition Height="4" />
            <RowDefinition Height="25"/>
        </Grid.RowDefinitions>
        
        <TextBlock Text="请选择您的部门并留言: " Grid.Column="0" Grid.Row="0" VerticalAlignment="Center" />
        <ComboBox Grid.Column="1" Grid.Row="0" Grid.ColumnSpan="4" BorderBrush="Black" />
        <TextBox Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="5" BorderBrush="Black" />
        <Button Content="提交" Grid.Column="2" Grid.Row="4" />
        <Button Content="清除" Grid.Column="5" Grid.Row="4" />
    </Grid>
</Window>

<Window x:Class="TestOfGrid.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
    <Grid x:Name="gridMain">
        <Grid.ColumnDefinitions >
            <ColumnDefinition />
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        
        <Grid.RowDefinitions >
            <RowDefinition Height="30px"/>
            <RowDefinition Height="30"/>
            <RowDefinition Height="0.5in"/>
            <RowDefinition Height="1cm"/>
            <RowDefinition Height="30pt"/>
        </Grid.RowDefinitions>
    </Grid>
</Window>