我在我的应用程序中打开了一个新页面。
XAML
<MenuItem Header="Admin" IsTabStop="False">
<MenuItem x:Name="mi_ManageUsers" Header="Manage Users" Click="mi_ManageUsers_Click"/>
</MenuItem>
C#
private void mi_ManageUsers_Click(object sender, RoutedEventArgs e)
{
ManageUsers newPage = new ManageUsers();
this.Content = newPage;
}
现在我的新页面中有一个按钮
XAML
<Page x:Class="Billing.ManageUsers"
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"
d:DesignHeight="300" d:DesignWidth="300"
Title="ManageUsers">
<Grid>
<Button x:Name="btnClose" Content="Close" HorizontalAlignment="Left" Margin="185,219,0,0" VerticalAlignment="Top" Width="75" Click="btnClose_Click"/>
</Grid>
</Page>
C#
private void btnClose_Click(object sender, RoutedEventArgs e)
{
//OnReturn(new ReturnEventArgs<string>(this.dataItem1TextBox.Text));
this.NavigationService.GoBack();
}
但代码无效。我需要关闭这个新页面或点击按钮
返回previos窗口答案 0 :(得分:1)
正如我在评论中提到的那样,当您this.Content = newPage;
时, 实际导航到该页面,而不是更改当前页面的Content
。当我尝试使用您的代码时,我在第InvalidOperationException
行上获得了this.NavigationService.GoBack();
。
要使其正常运行,请将mi_ManageUsers_Click
方法中的代码更改为:
NavigationService.Navigate(new ManageUsers());
我已经测试了这段代码并且有效。希望这会有所帮助。
答案 1 :(得分:-1)
我为此感到挣扎,但最终找到了答案...要从打开的页面中关闭页面,请使用:
<table>
<tr>
<th class="day-name">Wed</th>
<th class="day-name">Thu</th>
<th class="day-name">Fri</th>
<th class="day-name">Sat</th>
</tr>
<tr>
<td class="day day-3">
<span class="number">3</span>
<span class="event event-multiday-start event-1"></span>
</td>
<td class="day day-4">
<span class="number">4</span>
<span class="event event-multiday event-1"></span>
<span class="event event-multiday-start eventclass event-2" style="background-color:#5a9ab2;"></span>
<span class="event event-3"></td>
<td class="day day-5">
<span class="number">5</span>
<span class="event event-multiday-finish event-1"></span>
<span class="event event-multiday eventclass event-2" style="background-color:#5a9ab2;"></span></td>
<td class="day day-6">
<span class="number">6</span>
<span class="event event-ghost event-1"></span>
<span class="event event-multiday-finish eventclass event-2" style="background-color:#5a9ab2;"></span>
</td>
</tr>
</table>