<Window x:Class="WPF控件_12_多文本.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        Icon="public/003540AH4M72.jpg"
        mc:Ignorable="d"
        Title="WPF控件_12_多文本" Height="450" Width="800">
    <ScrollViewer>
        <StackPanel>
            <Label>
                RichTextBox
            </Label>
            <RichTextBox MinHeight="150" AutoWordSelection="True" />

            <Label>
                TextBox
            </Label>
            <TextBox Name="TextBox" MaxLength="199" TextWrapping="Wrap" MaxLines="2" MinHeight="150"
                     AcceptsReturn="True" AcceptsTab="True" AutoWordSelection="True"
                     MouseDoubleClick="TextBox_OnMouseDoubleClick" SelectionChanged="TextBox_OnSelectionChanged">
                AcceptsReturn="True" (通常情况按下回车会触发默认按钮)   AcceptsTab="True" (不会出现焦点现象跳转到下一个控件中)

            </TextBox>

            <Label>
                PasswordBox
            </Label>
            <PasswordBox Margin="0 0 0 50" MinHeight="150" />
        </StackPanel>
    </ScrollViewer>
</Window>