C# wpf用户控件-如何从外部uc设置文本_C#_Wpf

C# wpf用户控件-如何从外部uc设置文本

c# wpf

C# wpf用户控件-如何从外部uc设置文本,c#,wpf,C#,Wpf,我有一个问题，我有2个uc显示在主窗口中。我希望当我按下第一个uc中的on按钮时，另一个uc中的文本将发生变化 <Grid.RowDefinitions> <RowDefinition ></RowDefinition> </Grid.RowDefinitions>

我有一个问题，我有2个uc显示在主窗口中。我希望当我按下第一个uc中的on按钮时，另一个uc中的文本将发生变化

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

这是我使用的axml和代码第一加州大学

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>


赛科大学

所以我想按下启动按钮，计时器会改变吗？如何

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

10x

这应该在主窗口的视图模型中进行管理，因为这似乎是唯一一个同时了解这两个控件的位置，而且听起来好像每个用户控件都不一定相互了解

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

理想情况下，您应该在代码隐藏中对每个用户控件都有一个引用（或者，如果您有一个专用的视图模型类，就应该有一个视图模型类）

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

如果在代码隐藏中，您只需通过给它们命名来公开它们

                        <Grid.RowDefinitions>
                            <RowDefinition ></RowDefinition>
                        </Grid.RowDefinitions>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                        <ColumnDefinition></ColumnDefinition>
                    </Grid.ColumnDefinitions>
                    <Button Width="40" Height="40" Name="playbtn"  HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" >
                        <Button.Content>
                            <Image Source="/img/player_play.png"  ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_pause.png" ></Image>
                        </Button.Content>
                    </Button>
                    <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2"   Grid.Row="0" >
                        <Button.Content>
                            <Image Source="/img/player_stop.png" ></Image>
                        </Button.Content>
                    </Button>
                </Grid>

            </StackPanel>
        </Grid>
    </StackPanel>


  secound uc   <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

<Window x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:controls="your controls reference here">

    <Grid>

        <Grid.ColumnDefinitions>
            </ColumnDefinition>
            </ColumnDefinition>
        </Grid.ColumnDefinitions>

        <controls:UserControl1 x:Name="Control1"/>

        <controls:UserControl2 x:Name="Control2" Grid.Column="1"/>

    </Grid>

</Window>

在哪里做这个？您可能想在您的控件1上创建一个停止的事件，您可以将它附加到您的代码后面-在您的情况下，类似于停止的。在您的UserControl1类中，您应该声明如下内容

<Grid.RowDefinitions> <RowDefinition ></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <Button Width="40" Height="40" Name="playbtn" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" > <Button.Content> <Image Source="/img/player_play.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1" Grid.Row="0" > <Button.Content> <Image Source="/img/player_pause.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2" Grid.Row="0" > <Button.Content> <Image Source="/img/player_stop.png" ></Image> </Button.Content> </Button> </Grid> </StackPanel> </Grid> </StackPanel> secound uc <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

public event EventHandler Stopped;
然后在本地事件处理程序中单击停止按钮的调用该事件

<Grid.RowDefinitions> <RowDefinition ></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <Button Width="40" Height="40" Name="playbtn" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" > <Button.Content> <Image Source="/img/player_play.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1" Grid.Row="0" > <Button.Content> <Image Source="/img/player_pause.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2" Grid.Row="0" > <Button.Content> <Image Source="/img/player_stop.png" ></Image> </Button.Content> </Button> </Grid> </StackPanel> </Grid> </StackPanel> secound uc <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

private void Stop_Click(object sender, RoutedEventArgs e) { if (Stopped != null) Stopped(this, e); }
将其附加到主窗口中：

<Grid.RowDefinitions> <RowDefinition ></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <Button Width="40" Height="40" Name="playbtn" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0" Click="playbtn_Click" > <Button.Content> <Image Source="/img/player_play.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="pausebtn" Grid.Column="1" Grid.Row="0" > <Button.Content> <Image Source="/img/player_pause.png" ></Image> </Button.Content> </Button> <Button Width="40" Height="40" Name="stopbtn" Grid.Column="2" Grid.Row="0" > <Button.Content> <Image Source="/img/player_stop.png" ></Image> </Button.Content> </Button> </Grid> </StackPanel> </Grid> </StackPanel> secound uc <TextBlock Name="Progresstimertext" Text="00:00:00" FontSize="20"></TextBlock>

<controls:UserControl1 x:Name="Control1" Stopped=Control1_Stopped/>