c# - WPF:在单击事件中更改动态创建的按钮的背景颜色

Question

我在点击事件上创建了一个按钮:

  private void  btnAddNewQuestion_Click(object sender, RoutedEventArgs e)
        {
         Button btnQuestion = new Button();
         btnQuestion.Name="btn"+counter.toString();
         btnQuestion.Content="Enter/Edit your question here";
         btnQuestion.Background=Brushes.Grey;
         btnQuestion.Click += new RoutedEventHandler(btnEnterQuestion_Click);   
         counter++;
        }

下面是动态创建按钮的点击事件:

   private void  btnEnterQuestion_Click(object sender, RoutedEventArgs e)
        {
                        Button button = sender as Button;
                        button.Background=Brushes.White;
        }

问题:

我希望在单击按钮时，只有单击按钮的背景应更改为白色，而之前单击的按钮应将其颜色更改回灰色

为了引用，我附上了截图:

On click of first button

On click of second button

更新

我正在为 btnAddNewQuestion 添加 XAML 代码

<Button x:Name="btnAddNewQuestion" Click="btnAddNewQuestion_Click" />

Answer 1

在 spMain.Children 中搜索并更改所有按钮背景，然后单击下一个更改当前背景的按钮。

 private void btnEnterQuestion_Click(object sender, RoutedEventArgs e)
    {
        foreach (var btn in spMain.Children.OfType<Button>().Where(x=> x.Name.StartsWith("btn")))
            btn.Background =  Brushes.Gray;

        Button button = sender as Button;
        button.Background = Brushes.White;
    }