WPF窗体样式继承

来源：互联网发布：sql server语句编辑：程序博客网时间：2024/05/30 23:02

在机房合作中，组合查询窗体用到了继承，那么如何继承呢？

我们写好的父窗口类为frmGroup，对应frmGroup.cs和frmGroup.xaml，要继承它的子窗体是学生上机统计信息frmStuOnlineInfo

这里我修改成：

<span style="font-family:KaiTi_GB2312;font-size:24px;">public partial class frmStuOnlineInfo : frmGroup</span>

但是经过编译会报错：frmStuOnlineInfo有着不同的基类

这是因为frmStuOnlineInfo同时继承了window和frmGroup，多继承是不允许的。

解决方法：

需要修改frmStuOnlineInfo.xaml，将其中的根“Window”，修改成我们的frmGroup：

<span style="font-family:KaiTi_GB2312;font-size:24px;"><Controls:MetroWindow x:Class="JfCooperate.一般用户.frmStuOnlineInfo"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"        Title="frmStuOnlineInfo" Height="473.617" Width="831.064">    <Grid>            </Grid></Controls:MetroWindow></span>

此时一个新的错误：src:frmGroup不能是Xaml文件的根，因为它是由Xaml定义的

解决方法：

把父窗体的xaml放到App.xaml中

下面是我设计的组合查询窗体的样式：

<span style="font-family:KaiTi_GB2312;font-size:24px;"><ControlTemplate x:Key="WindowControlTemplate1" TargetType="{x:Type Window}">                <Grid>                    <Frame Content="字段名" HorizontalAlignment="Left" Height="129" Margin="10,44,0,0" VerticalAlignment="Top" Width="152"/>                    <ComboBox HorizontalAlignment="Left" Margin="27,62,0,0" VerticalAlignment="Top" Width="120"/>                    <ComboBox HorizontalAlignment="Left" Margin="27,102,0,0" VerticalAlignment="Top" Width="120"/>                    <ComboBox HorizontalAlignment="Left" Margin="27,147,0,0" VerticalAlignment="Top" Width="120"/>                    <Frame Content="操作符" HorizontalAlignment="Left" Height="129" Margin="197,44,0,0" VerticalAlignment="Top" Width="152"/>                    <ComboBox HorizontalAlignment="Left" Margin="214,62,0,0" VerticalAlignment="Top" Width="120"/>                    <ComboBox HorizontalAlignment="Left" Margin="214,102,0,0" VerticalAlignment="Top" Width="120"/>                    <ComboBox HorizontalAlignment="Left" Margin="214,147,0,0" VerticalAlignment="Top" Width="120"/>                    <Frame Content="输入查询内容" HorizontalAlignment="Left" Height="129" Margin="527,45,0,0" VerticalAlignment="Top" Width="152"/>                    <ComboBox HorizontalAlignment="Left" Margin="544,78,0,0" VerticalAlignment="Top" Width="120"/>                    <ComboBox HorizontalAlignment="Left" Margin="544,133,0,0" VerticalAlignment="Top" Width="120"/>                    <Frame Content="组合关系" HorizontalAlignment="Left" Height="142" Margin="385,45,0,0" VerticalAlignment="Top" Width="137"/>                    <TextBox HorizontalAlignment="Left" Height="23" Margin="385,78,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>                    <TextBox HorizontalAlignment="Left" Height="23" Margin="385,133,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>                    <DataGrid HorizontalAlignment="Left" Margin="70,215,0,0" VerticalAlignment="Top" Height="208" Width="571"/>                    <Button Content="查询" HorizontalAlignment="Left" Margin="702,103,0,0" VerticalAlignment="Top" Width="75"/>                    <Button Content="清空" HorizontalAlignment="Left" Margin="702,173,0,0" VerticalAlignment="Top" Width="75"/>                    <Button Content="导出" HorizontalAlignment="Left" Margin="702,300,0,0" VerticalAlignment="Top" Width="75"/>                    <Button Content="退出" HorizontalAlignment="Left" Margin="702,236,0,0" VerticalAlignment="Top" Width="75"/>                </Grid>                <ControlTemplate.Triggers>                    <MultiTrigger>                        <MultiTrigger.Conditions>                            <Condition Property="ResizeMode"                               Value="CanResizeWithGrip" />                            <Condition Property="WindowState"                               Value="Normal" />                        </MultiTrigger.Conditions>                    </MultiTrigger>                </ControlTemplate.Triggers>            </ControlTemplate></span>

子窗体继承代码为：

<span style="font-family:KaiTi_GB2312;font-size:24px;"><Controls:MetroWindow x:Class="JfCooperate.一般用户.frmStuOnlineInfo"        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"        Title="frmStuOnlineInfo" Height="473.617" Width="831.064"        Template="{StaticResource WindowControlTemplate1}">    <Grid>            </Grid></Controls:MetroWindow></span>

显示结果

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