我目前正在编写一个函数，该函数根据从C#中的API调用接收到的JSON信息在XAML中创建按钮（在运行时）。
我目前有以下代码：

Button downloadButton = new Button();
downloadButton.Click += new RoutedEventHandler(DownloadContent);

但我得到以下错误：
非静态字段、方法或属性'Mainwindow.DownloadContent（object，RoutedEventArgs）'需要对象指涉
我尝试将其更改为downloadButton.Click += new RoutedEventHandler(this, DownloadContent);，但出现错误：
Keyword 'this' is not valid in a static property, static method, or static field initializer
以下是DownloadContent的外观，以供参考

private void DownloadContent(object sender, RoutedEventArgs e)
{
    WebClient webClient = new WebClient();
    webClient.DownloadFileAsync(new Uri("API-URL"), contentZip);
    webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(InstallContent);        
}

这就是我想要的按钮外观（跳过其他内容，如背景颜色等）

<Button Name="Downloadbutton" 
  Content="Download"
  Click="DownloadContent"
</Button>

我是否遗漏了一些东西，比如为什么我会出现此错误以及如何修复它？

编辑

Installcontent函数如下所示：

private void InstallContent(object sender, AsyncCompletedEventArgs e)
{
    ZipFile.ExtractToDirectory(contentZip, contentPath, true);
    File.Delete(contentZip);
    writeJsonData(DLCbuttonTag);
    Downloadbutton.Visibility = Visibility.Collapsed;
    Uninstallbutton.Visibility = Visibility.Visible;
}

创建按钮的函数：

public static void getContentList()
        {
        string jsonString = File.ReadAllText(@"C:\Users\stage\OneDrive\Documenten\ContentInfo.json")
        ContentList contentList = JsonConvert.DeserializeObject<ContentList>(jsonString);;

            for (int i = 0; i < contentList.Content.Count; i++)
            {
                    StackPanel dynamicStackPanel = new StackPanel();
                    dynamicStackPanel.Orientation = Orientation.Horizontal;
                    dynamicStackPanel.Background = Brushes.Transparent;
                    
                    Button downloadButton = new Button();
                    downloadButton.Click += new RoutedEventHandler(DownloadContent);
                    dynamicStackPanel.Children.Add(downloadButton);
            }
        }