在单击页面上的事件后使窗口上的按钮启用

本文关键字：窗口 按钮 启用 事件 单击 | 更新日期: 2023-09-27 18:18:57

我有一个Window和一个Page。Window有3个按钮，默认禁用。Page有1个按钮，当点击10次时显示一条消息，并且应该启用Window上的按钮。

在Page中的按钮被点击10次后，我如何启用窗口中的3个按钮?

主窗口XAML: 

 <Window x:Class="MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
    <Grid x:Name="Window1Grid">
        <Grid x:Name="FrameGrid">
            <Button IsEnabled="False" Content="Button" Height="23" HorizontalAlignment="Left" Margin="18,56,0,0" Name="Button1" VerticalAlignment="Top" Width="75" />
            <Button IsEnabled="False" Content="Button" Height="23" HorizontalAlignment="Left" Margin="18,112,0,0" Name="Button2" VerticalAlignment="Top" Width="75" />
            <Button IsEnabled="False" Content="Button" Height="23" HorizontalAlignment="Left" Margin="18,165,0,0" Name="Button3" VerticalAlignment="Top" Width="75" />
        </Grid>
        <Frame Source="Page1.xaml" Height="250" HorizontalAlignment="Left" Margin="114,38,0,0" Name="Frame1" VerticalAlignment="Top" Width="300" />
    </Grid>
</Window>

主窗口.vb 

   Public Class MainWindow
End Class

Page1 .Xaml 

<Page x:Class="Page1"
  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="250" d:DesignWidth="300"
  Title="Page1">
<Grid x:Name="Page1Grid" Background="Red">
    <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="113,166,0,0" Name="Button1" VerticalAlignment="Top" Width="75" />
    <TextBlock Height="23" HorizontalAlignment="Left" Margin="14,12,0,0" Name="Page1TxtBlock" Text="Page1" VerticalAlignment="Top" />
</Grid>

第1页。vb

Class Page1
Dim clicks As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click
    Try

        clicks += 1
        If clicks >= 10 Then
            MessageBox.Show("Window Buttons should be enabled")
            clicks = 0
        End If
    Catch ex As Exception
    End Try
End Sub
End Class

在单击页面上的事件后使窗口上的按钮启用

按注释中的要求编辑

点击父按钮禁用所有三个按钮

在你的Page1类中:

Dim parentWindow as MainWindow;

然后重载页面构造函数:

Public Sub New(ByVal mw As MainWindow)
    parentWindow=mw
End Sub

初始化Page in Frame时使用

Dim p As New Page1(Me)
frame.Content = p

使用

从page1调用它
parentWindow.btnSomethinf.IsEnabled=true...
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