c# - Avalonia 按钮单击事件不起作用

Question

我有一个简单的 Avalonia 形式:

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
        x:Class="AvaloniaExperiment.MainWindow"
        Title="AvaloniaExperiment">
  <StackPanel>
    <TextBlock>Welcome to Avalonia!</TextBlock>
    <Button Name="btn" Click="btn_OnClick">Fred!</Button>
  </StackPanel>
</Window>

以及后面代码中的一个方法(我想这样做，直到我熟悉了Avalonia，然后也许我会尝试MVVM):

private void btn_OnClick()
{
    btn.Text = "Ginger";
}

但是我收到这些编译错误:

The name btn does not exist in the current context (in the code behind)

Unable to find suitable setter or adder for property Click of type Avalonia.Controls:Avalonia.Controls.Button for argument System.Private.CoreLib:System.String, available setter parameter lists are: System.EventHandler`1[[Avalonia.Interactivity.RoutedEventArgs, Avalonia.Interactivity, Version=0.9.0.0, Culture=neutral, PublicKeyToken=null]] (in the XAML)

Unable to find suitable setter or adder for property Command of type Avalonia.Controls:Avalonia.Controls.Button for argument System.Runtime:System.String, available setter parameter lists are: Avalonia.UnsetValueType Avalonia.Data.IBinding System.Windows.Input.ICommand (also in the XAML)

连接此事件处理程序时我会做错什么？

Answer 1

你有没有尝试过...

public void btn_OnClick(object sender, RoutedEventArgs e)
{
    btn.Text = "Ginger";
}