我有一个带有堆叠面板和框架的窗口。堆栈面板拿着我的菜单。在选择菜单时，我在框架内加载我的UserControls。
但问题是UserControl显示在Frame的中心而没有最大化。
任何人都可以帮助我将UserControl最大化到Frame的宽度并调整UserControl中的所有控件吗？
这是我的xaml文件......
用户控件：
<UserControl x:Class="PosWp.Categorys"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
d:DesignHeight="400" d:DesignWidth="700" Loaded="UserControl_Loaded">
<UserControl.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="ButtonStyleDictionary.xaml"></ResourceDictionary>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</UserControl.Resources>
<ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" Width="700">
<StackPanel Margin="0,0,0,0" Height="Auto" Width="Auto">
<TabControl Name="Tabs1" TabStripPlacement="top" BorderThickness="0" BorderBrush="#CC684331" Margin="0,0,0,0">
<TabControl.Background>
<RadialGradientBrush>
<GradientStop Color="Gray" Offset="0"/>
<GradientStop Color="Gray" Offset="0"/>
<GradientStop Color="Gray" Offset="0"/>
<GradientStop Color="Gray" Offset="0"/>
</RadialGradientBrush>
</TabControl.Background>
<TabItem Header="Category" Name="GridCat" IsSelected="False" Visibility="Hidden">
<Grid Height="280" Width="671">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="200"/>
<ColumnDefinition Width="200*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="23"></RowDefinition>
<RowDefinition Height="34" />
<RowDefinition Height="143" />
<RowDefinition Height="50*"></RowDefinition>
</Grid.RowDefinitions>
<DataGrid IsReadOnly="True" AutoGenerateColumns="False" AlternatingRowBackground="Beige" Height="142" Grid.ColumnSpan="2" FontWeight="Bold" HorizontalAlignment="Center" Margin="0,0,206,0" Name="dgCategory" VerticalAlignment="Top" Width="460" Grid.RowSpan="3" SelectionChanged="dgCategory_SelectionChanged">
<DataGrid.Columns>
<DataGridTextColumn Binding="{Binding Path=CategoryCode}" Header="Category" Width="200" ></DataGridTextColumn>
<DataGridTextColumn Binding="{Binding Path=Categoryname}" Header="CategoryName" Width="250" ></DataGridTextColumn>
</DataGrid.Columns>
</DataGrid>
<Button x:Name="Create" Template="{StaticResource Create}" Height="30" HorizontalAlignment="Left" Grid.Row="3" Margin="40,0,0,0" Click="Create_Click" VerticalAlignment="Top" Width="75" />
<Button x:Name="Edit" Template="{StaticResource Edit}" Height="30" HorizontalAlignment="Left" Grid.Row="3" Margin="120,0,0,0" Click="Edit_Click" VerticalAlignment="Top" Width="75" />
<Button x:Name="Delete" Template="{StaticResource Delete}" Height="30" HorizontalAlignment="Left" Grid.Row="3" Grid.Column="1" Click="Delete_Click" Margin="0,0,0,0" VerticalAlignment="Top" Width="75" />
<Button x:Name="Exit" Template="{StaticResource Exit}" Height="30" HorizontalAlignment="Left" Grid.Row="3" Grid.Column="1" Click="Exit_Click" Margin="80,0,0,0" VerticalAlignment="Top" Width="78" />
<Label Content="Category Master" FontWeight="Bold" Grid.ColumnSpan="2" Height="28" HorizontalAlignment="Left" Margin="167,-39,0,0" Name="lblgrid" VerticalAlignment="Top" Width="136" />
</Grid>
</TabItem>
<TabItem Header="Category" Name="Cat" Visibility="Hidden">
<Grid Height="280" Width="689">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="180"/>
<ColumnDefinition Width="250"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="70"></RowDefinition>
<RowDefinition Height="70"></RowDefinition>
<RowDefinition Height="70"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Label Content="CategoryCode" FontWeight="Bold" FontSize="12" Name="lblCatcode" Width="110" Margin="0,29,0,16" Height="25" HorizontalAlignment="Right"></Label>
<Label Content="CategoryName" FontWeight="Bold" FontSize="12" Grid.Row="1" Name="lblCatName" Width="110" Margin="0,22,0,23" HorizontalAlignment="Right"></Label>
<TextBox Name="txtCatcode" Grid.Column="1" Width="170" HorizontalAlignment="Left" Margin="0,28,0,17" Height="25"></TextBox>
<TextBox Name="txtCatName" Grid.Column="1" Grid.Row="1" Width="170" HorizontalAlignment="Left" Margin="0,22,0,0" Height="25" VerticalAlignment="Top"></TextBox>
<Button x:Name="Save" Template="{StaticResource Save}" Grid.Column="1" Grid.Row="2" Margin="5,0,0,0" HorizontalAlignment="Left" Click="Save_Click" Width="85" Height="30" ></Button>
<Button x:Name="Update" Template="{StaticResource Update}" Visibility="Hidden" Grid.Column="1" Grid.Row="2" Margin="5,0,0,0" Click="Update_Click" HorizontalAlignment="Left" Width="85" Height="30" ></Button>
<Button x:Name="Remove" Template="{StaticResource Remove}" Visibility="Hidden" Grid.Column="1" Grid.Row="2" Margin="5,0,0,0" Click="Remove_Click" HorizontalAlignment="Left" Width="85" Height="30"></Button>
<Button x:Name="Close" Template="{StaticResource Close}" Grid.Column="1" Grid.Row="2" Margin="95,0,0,0" HorizontalAlignment="Left" Height="30" Click="Close_Click" Width="85"></Button>
<Label Content="Category Master" FontWeight="Bold" Grid.ColumnSpan="2" Height="28" HorizontalAlignment="Left" Margin="167,-39,0,0" Name="lblcategory" VerticalAlignment="Top" />
</Grid>
</TabItem>
</TabControl>
</StackPanel>
</ScrollViewer>
</UserControl>
Window xaml：
<Window x:Class="PosWp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="650" ResizeMode="CanResize" WindowState="Maximized" WindowStartupLocation="CenterScreen">
<Window.Resources>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="CornflowerBlue" />
<Setter Property="Height" Value="22" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid Height="{TemplateBinding Height}">
<Grid.RowDefinitions>
<RowDefinition Height="1.8*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Rectangle Grid.RowSpan="2" RadiusX="7" RadiusY="7" Fill="{TemplateBinding Background}">
<Rectangle.Stroke>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0" Color="Black" />
<GradientStop Offset="1" Color="HotPink" />
</LinearGradientBrush>
</Rectangle.Stroke>
</Rectangle>
<Rectangle Margin="3,1" RadiusX="3" RadiusY="3">
<Rectangle.Fill>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0" Color="#dfff" />
<GradientStop Offset="1" Color="#0fff" />
</LinearGradientBrush>
</Rectangle.Fill>
</Rectangle>
<ContentPresenter Grid.RowSpan="3" Margin="13,2,13,4" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<Grid.Background>
<RadialGradientBrush>
<GradientStop Color="#FFF3F3F3" Offset="0"/>
<GradientStop Color="#FFEBEBEB" Offset="0"/>
<GradientStop Color="#FFDDDDDD" Offset="0"/>
<GradientStop Color="#FF28BCE6" Offset="0"/>
</RadialGradientBrush>
</Grid.Background>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="220"/>
<ColumnDefinition Width="321*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
</Grid.RowDefinitions>
<ScrollViewer Grid.Column="0" Height="Auto" Width="Auto" >
<StackPanel Grid.Column="0" Height="Auto" Orientation="Vertical" ScrollViewer.VerticalScrollBarVisibility="Auto">
<StackPanel HorizontalAlignment="Left" Grid.Column="0" Height="Auto" Width="220" >
<Expander Header="Master" HorizontalAlignment="Left" Grid.Column="0" FontWeight="Bold" Width="200" Height="Auto" >
<StackPanel ScrollViewer.VerticalScrollBarVisibility="Auto" >
<StackPanel HorizontalAlignment="Left" Height="Auto" Width="200" >
<Button Content="Category" Margin="10,0,0,0" Name="btnMasCat" Click="btnMasCat_Click"/>
<Button Content="Department" Margin="10,0,0,0" Name="btnMasDep" Click="btnMasDep_Click" />
<Button Content="Employee" Margin="10,0,0,0" Name="btnMasEmp" Click="btnMasEmp_Click" />
<Button Content="Kitchen" Margin="10,0,0,0" Name="btnMasKit" Click="btnMasKit_Click"/>
<Button Content="PayMode" Margin="10,0,0,0" Name="btnMasPay" Click="btnMasPay_Click"/>
<Button Content="Modifier" Margin="10,0,0,0" Name="btnMasMod" Click="btnMasMod_Click"/>
<Button Content="PosMaster" Margin="10,0,0,0" Name="btnMasPos" Click="btnMasPos_Click"/>
<Button Content="Session" Margin="10,0,0,0" Name="btnMasSession" Click="btnMasSession_Click"/>
<Button Content="Table" Margin="10,0,0,0" Name="btnMasTable" Click="btnMasTable_Click"/>
<Button Content="Tax" Margin="10,0,0,0" Name="btnMasTax" Click="btnMasTax_Click"/>
<Button Content="Discount" Margin="10,0,0,0" Name="btnMasDis" Click="btnMasDis_Click"/>
<Button Content="ItemMaster" Margin="10,0,0,0" Name="btnMasItem" Click="btnMasItem_Click"/>
<Button Content="Shift" Margin="10,0,0,0" Name="btnMasShift" Click="btnMasShift_Click"/>
<Button Content="User" Margin="10,0,0,0" Name="btnMasUser" Click="btnMasUser_Click"/>
<Button Content="RoomMaster" Margin="10,0,0,0" Name="btnMasRoom" Click="btnMasRoom_Click"/>
<Button Content="Unit" Margin="10,0,0,0" Name="btnMasUnit" Click="btnMasUnit_Click"/>
</StackPanel>
</StackPanel>
</Expander>
<Expander Header="Transaction" HorizontalAlignment="Left" FontWeight="Bold" Width="200" Height="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto">
<StackPanel ScrollViewer.VerticalScrollBarVisibility="Auto">
<StackPanel HorizontalAlignment="Left" Width="200" ScrollViewer.VerticalScrollBarVisibility="Auto">
<Button Content="BookigTable" Margin="10,0,0,0" Name="btnBooking" Click="btnBooking_Click"/>
<Button Content="Button B" Margin="10,0,0,0" />
<Button Content="Button C" Margin="10,0,0,0" />
<Button Content="Button D" Margin="10,0,0,0" />
<Button Content="Button E" Margin="10,0,0,0" />
</StackPanel>
</StackPanel>
</Expander>
<Expander Header="Report" HorizontalAlignment="Left" FontWeight="Bold" Width="200" ScrollViewer.VerticalScrollBarVisibility="Auto">
<StackPanel ScrollViewer.VerticalScrollBarVisibility="Auto">
<StackPanel HorizontalAlignment="Left" Width="200" ScrollViewer.VerticalScrollBarVisibility="Auto">
<Button Content="Category" Margin="10,0,0,0" Name="btnRepCat" Click="btnRepCat_Click"/>
<Button Content="Department" Margin="10,0,0,0" Name="btnRepDep" Click="btnRepDep_Click"/>
<Button Content="Employee" Margin="10,0,0,0" Name="btnRepEmp" Click="btnRepEmp_Click"/>
<Button Content="Kitchen" Margin="10,0,0,0" Name="btnRepKit" Click="btnRepKit_Click"/>
<Button Content="PayMode" Margin="10,0,0,0" Name="btnRepPay" Click="btnRepPay_Click"/>
<Button Content="Modifier" Margin="10,0,0,0" Name="btnRepMod" Click="btnRepMod_Click"/>
<Button Content="PosMaster" Margin="10,0,0,0" Name="btnRepPos" Click="btnRepPos_Click"/>
<Button Content="Session" Margin="10,0,0,0" Name="btnRepsession" Click="btnRepsession_Click"/>
<Button Content="Table" Margin="10,0,0,0" Name="btnRepTable" Click="btnRepTable_Click"/>
<Button Content="Tax" Margin="10,0,0,0" Name="btnRepTax" Click="btnRepTax_Click"/>
<Button Content="Discount" Margin="10,0,0,0" Name="btnRepDis" Click="btnRepDis_Click"/>
<Button Content="ItemMaster" Margin="10,0,0,0" Name="btnRepItem" Click="btnRepItem_Click"/>
<Button Content="Shift" Margin="10,0,0,0" Name="btnRepShift" Click="btnRepShift_Click"/>
<Button Content="User" Margin="10,0,0,0" Name="btnRepUser" Click="btnRepUser_Click"/>
<Button Content="RoomMaster" Margin="10,0,0,0" Name="btnRepRoom" Click="btnRepRoom_Click"/>
<Button Content="Unit" Margin="10,0,0,0" Name="btnRepUnit" Click="btnRepUnit_Click"/>
</StackPanel>
</StackPanel>
</Expander>
</StackPanel>
</StackPanel>
</ScrollViewer>
<Frame Grid.Column="1" NavigationUIVisibility="Hidden" Margin="0,0,0,0" Name="frame1" >
<Frame.Background>
<RadialGradientBrush >
<GradientStop Color="#FFF3F3F3" Offset="0"/>
<GradientStop Color="#FFEBEBEB" Offset="0"/>
<GradientStop Color="#FFDDDDDD" Offset="0"/>
<GradientStop Color="#FF28BCE6" Offset="0"/>
</RadialGradientBrush>
</Frame.Background>
</Frame>
</Grid>
</Window>
答案 0 :(得分：1)
当您将frame1的内容设置为UserControl的实例时，它将采用帧的大小。您觉得它没有最大化的原因是因为您在UserControl中设置了元素的高度和宽度（如ScrollViewer宽度）。只需将UserControl的背景设置为某种颜色，在运行时您将看到它占用了框架的大小。但是usercontrol中的内容没有占用usercontrol的大小。
WPF布局与Winforms不同，单独设置所有控件的高度和宽度不是一个好习惯。控件根据其内容呈现自己。