Hey how can i change the ugly outer borders on win ui .net maui picker? Is there any way to disable it? Or maybe change the color?

嘿，我怎么才能改变Win UI.Net Maui Picker上难看的外部边框呢？有什么办法可以禁用它吗？或者换个颜色？

Also what is this weird bug when you hover over the picker the texts change colors?

还有，当你将鼠标悬停在选取器上，文本会改变颜色时，这个奇怪的错误是什么？

The picker's windows natvie control is combobox. So you can use the handler to disable the border:

选取器的窗口Natvie控件是组合框。因此，您可以使用处理程序禁用边框：

public App()
      {
            InitializeComponent();

            MainPage = new AppShell(); 
Microsoft.Maui.Handlers.PickerHandler.Mapper.AppendToMapping(nameof(Picker), (handler, view) =>
        {
#if WINDOWS
            var combobox = handler.PlatformView;
            combobox.BorderBrush = null;
            combobox.BorderThickness = new Microsoft.UI.Xaml.Thickness(0);     
#endif
        });
    }

Or you can change its color by change the windows native combobox style. Just add the following code to the \Platforms\Windows\App.xaml:

或者，您可以通过更改Windows本机组合框样式来更改其颜色。只需将以下代码添加到\Platels\Windows\App.xaml：

<maui:MauiWinUIApplication
    x:Class="MauiAppTest.WinUI.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:maui="using:Microsoft.Maui"
    xmlns:local="using:MauiAppTest.WinUI">
    <maui:MauiWinUIApplication.Resources>
        <ResourceDictionary>
            <SolidColorBrush x:Key="ComboBoxBorderBrush" Color="#Ff0000" />
            <SolidColorBrush x:Key="ComboBoxBorderBrushPointerOver" Color="#Ff0000" />
            <SolidColorBrush x:Key="ComboBoxBorderBrushPressed" Color="#Ff0000" />
        </ResourceDictionary>
    </maui:MauiWinUIApplication.Resources>
</maui:MauiWinUIApplication>

But I can't reproduce the problem you said about the text color changed. You can check the default style of the combobox.

但我无法重现您所说的文本颜色更改的问题。您可以选中组合框的默认样式。