如何将WPF网格单元格复制到同一网格中的另一个单元格

如何解决如何将WPF网格单元格复制到同一网格中的另一个单元格

我有一个网格17x13，每个单元格包含一个图像，另一个网格2x2，每个单元格包含一个图像。 xaml的用法是：（Grid_0_0重复了很多，所以这只是它的主要作用）

<Canvas x:Name="baseContainer">
    <Grid x:Name="MainGrid" ScrollViewer.VerticalScrollBarVisibility="Disabled" Width="{Binding ActualWidth,ElementName=baseContainer,Mode=OneWay}" Height="{Binding ActualHeight,Mode=OneWay}">
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>    
        <Grid x:Name="Grid_0_0" Grid.Row="0" Grid.Column="0" RenderTransformOrigin="0.5,0.5">
            <Grid.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform/>
                    <TranslateTransform/>
                </TransformGroup>
            </Grid.RenderTransform>
            <Grid.RowDefinitions>
                <RowDefinition/>
                <RowDefinition/>
            </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition/>
                <ColumnDefinition/>
            </Grid.ColumnDefinitions>
            <Image x:Name="Baseimg_0_0" Grid.Column = "0" Grid.Row = "0" Source = "/psyduck larger.jpg" Stretch = "Fill" Visibility="Visible" Grid.RowSpan="2" Grid.ColumnSpan="2" RenderTransformOrigin="0.5,0.5" />
            <Image x:Name="Altimg_0_0_TL" Source="/psyduck larger.jpg" Stretch="Fill" Visibility="Hidden" Width="{Binding ActualWidth,ElementName=Baseimg_0_0,Mode=OneWay}"/>
            <Image x:Name="Altimg_0_0_TR" Source="/psyduck larger.jpg" Stretch="Fill" Visibility="Hidden" Width="{Binding ActualWidth,Mode=OneWay}" Grid.Column="1" HorizontalAlignment="Right"/>
            <Image x:Name="Altimg_0_0_BL" Source="/psyduck larger.jpg" Stretch="Fill" Visibility="Hidden" Width="{Binding ActualWidth,Mode=OneWay}" Grid.Row="1" VerticalAlignment="Bottom"/>
            <Image x:Name="Altimg_0_0_BR" Source="/psyduck larger.jpg" Stretch="Fill" Visibility="Hidden" Width="{Binding ActualWidth,Mode=OneWay}" Grid.Column="1" Grid.Row="1" VerticalAlignment="Bottom" HorizontalAlignment="Right"/>
        </Grid>

这些“微型网格”根据按下哪个箭头键向上，向下，向左或向右滑动一个网格单元。每个单元然后将在视觉上位于相邻单元的位置。 最后，我将移动的单元格的内容复制到它已移动到其上的单元格。

我试图简单地通过

Grid_0_0 = Grid_0_1;

但是它并没有导致任何实际更改。或者至少它没有复制诸如“ visible”和“ hidden”之类的值。 而且我也尝试为此做一个foreach循环。

private void ResetBoardSlide()
    {
        foreach (Grid grid in MainGrid.Children) 
        { 
            grid.RenderTransform = new TranslateTransform(0,0);
            grid = Grid_0_0;
        } 
    }

但是，由于“ CS1656 C＃无法分配，因为它是一个'foreach迭代变量'”，因此无法使用它，这似乎是因为foreach是只读的。整齐。但是，是否有任何内置或简单的方式将所有子代及其状态复制到另一个单元格中？

解决方法

您需要以编程方式更改小型网格“ Grid_0_0”对象的附加属性（Grid.RowProperty和Grid.ColumnProperty）的值。假设您有一个按键事件的回调，代码应该像这样

private void OnKeyPress(KeyNameEnum key)
{
    switch(key)
    {
        case KeyNameEnum.Up: 
             Grid_0_0.SetValue(Grid.RowProperty,((int)Grid_0_0.GetValue(Grid.RowProperty))-1);
             break;
        case KeyNameEnum.Down:
             Grid_0_0.SetValue(Grid.RowProperty,((int)Grid_0_0.GetValue(Grid.RowProperty))+1);
             break;
        case KeyNameEnum.Left: 
             Grid_0_0.SetValue(Grid.ColumnProperty,((int)Grid_0_0.GetValue(Grid.ColumnProperty))-1);
             break;
        case KeyNameEnum.Right:
             Grid_0_0.SetValue(Grid.ColumnProperty,((int)Grid_0_0.GetValue(Grid.ColumnProperty))+1);
             break;
        default:
             break;
    }
}

当然，您需要添加边界检查以防止微网格从字面上消失。