ZeroLauncher/dialog/RegDialog.xaml

<Window x:Class="Zerolauncher.dialog.RegDialog"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="注册账号.."
        MinHeight="200"
        MinWidth="300"
        SizeToContent="WidthAndHeight"
        ResizeMode="NoResize"
        ShowInTaskbar="False"
        WindowStartupLocation="CenterOwner" 
        FocusManager.FocusedElement="{Binding ElementName=leftMarginTextBox}">
    <Grid Margin="10">
        <Grid.Resources>
            <!-- Default settings for controls -->
            <Style TargetType="{x:Type Label}">
                <Setter Property="Margin" Value="0,3,5,5" />
                <Setter Property="Padding" Value="0,0,0,5" />
            </Style>
            <Style TargetType="{x:Type TextBox}">
                <Setter Property="Margin" Value="0,0,0,5" />
            </Style>
            <Style TargetType="{x:Type Button}">
                <Setter Property="Width" Value="70" />
                <Setter Property="Height" Value="25" />
                <Setter Property="Margin" Value="5,0,0,0" />
            </Style>
        </Grid.Resources>

        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition />
        </Grid.RowDefinitions>

        <!-- Left,Top,Right,Bottom margins-->
        <Button Width="200" Margin="0, 0, 0, 30" Height="50" Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2" Grid.RowSpan="2" Click="FleshPic">
            <Image x:Name="CapPic" Source="/res/captcha.jpg"/>
        </Button>

        <Label Grid.Column="0" Grid.Row="2">验证码:</Label>
        <TextBox Name="RightMarginTextBox" Grid.Column="1" Grid.Row="2" />

        <Label Grid.Column="0" Grid.Row="3">注册邮箱:</Label>
        <TextBox Name="BottomMarginTextBox" Grid.Column="1" Grid.Row="3" />

        <!-- Accept or Cancel -->
        <StackPanel Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="4" Orientation="Horizontal" HorizontalAlignment="Right">
            <Button Name="OkButton" IsDefault="True" Click="okButton_Click" >确定</Button>
            <Button Name="CancelButton" IsCancel="True" Click="cancelButton_Click">取消</Button>
        </StackPanel>
    </Grid >
</Window>