今天我来给大家推荐一个非常实用的库——xamltreedump。这个库可以将 xaml 树上的元素转换成 json 字符串,非常适合用于 ui 单元测试。
首先,我们需要通过 NuGet 工具来安装 XamlTreeDump 库。

假设我们有一个 UI 界面代码如下:
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在后台代码中,我们可以使用 VisualTreeDumper.DumpTree 方法来获取 JSON 字符串:
public MainPage()
{
InitializeComponent();
Loaded += MainPage_Loaded;
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
var xaml = VisualTreeDumper.DumpTree(this, null, Array.Empty(), new AttachedProperty[0]);
} 通过上述代码,我们可以得到如下的 JSON 字符串:
{
"XamlType": "WholebaycarNowawnawka.MainPage",
"Background": "#FFFFFFFF",
"BorderBrush": null,
"BorderThickness": "0,0,0,0",
"Clip": null,
"CornerRadius": "0,0,0,0",
"FlowDirection": "LeftToRight",
"Foreground": "#FF000000",
"HorizontalAlignment": "Stretch",
"Margin": "0,0,0,0",
"Padding": "0,0,0,0",
"RenderSize": [1200, 900],
"VerticalAlignment": "Stretch",
"Visibility": "Visible",
"children":
[
{
"XamlType": "Windows.UI.Xaml.Controls.Grid",
"Background": null,
"BorderBrush": null,
"BorderThickness": "0,0,0,0",
"Clip": null,
"CornerRadius": "0,0,0,0",
"FlowDirection": "LeftToRight",
"HorizontalAlignment": "Stretch",
"Margin": "0,0,0,0",
"Padding": "0,0,0,0",
"RenderSize": [1200, 900],
"VerticalAlignment": "Stretch",
"Visibility": "Visible",
"children":
[
{
"XamlType": "Windows.UI.Xaml.Controls.TextBlock",
"Clip": null,
"FlowDirection": "LeftToRight",
"Foreground": "#FF000000",
"HorizontalAlignment": "Stretch",
"Margin": "0,0,0,0",
"Padding": "0,0,0,0",
"RenderSize": [1200, 900],
"Text": "欢迎访问我博客 https://blog.lindexi.com 里面有大量 UWP WPF 博客",
"VerticalAlignment": "Stretch",
"Visibility": "Visible"
}
]
}
]
}更多详细信息,请参考 asklar/XamlTreeDump: A UWP library to produce and compare XAML tree dumps useful for visual end-to-end testing。
本文的所有代码都已放置在 GitHub 和 Gitee 上,欢迎大家访问。
本文会经常更新,请阅读原文:https://www.php.cn/link/8b23716b7bceb1123ebe2457a756dc13。
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