private void Button_Click(object sender, RoutedEventArgs e)
时间: 2024-03-04 22:49:56 浏览: 118
这段代码是C#中的一个事件处理方法。具体来说,这是一个名为Button_Click的方法,返回类型为void,没有参数。在WPF应用程序中,事件是指用户执行某些操作时,程序会自动触发的动作,如单击按钮、选择下拉列表等。在这个方法中,通过sender和e两个参数,可以获取触发该事件的控件实例和事件参数。在这个方法中,可以编写相应的代码来处理用户操作,如读取文本框内容并执行相应的操作。在WPF中,事件处理方法通常会通过XAML中的事件绑定,与相应的控件事件关联起来。
相关问题
加英文注释 private void Button_ok(object sender, RoutedEventArgs e) { if (string.IsNullOrEmpty(Height.Text)&& string.IsNullOrEmpty(width.Text)) { } else { q = Convert.ToInt32(Height.Text); p = Convert.ToInt32(width.Text); Thickness1(); } }
Here's the annotated code with English comments:
```csharp
private void Button_ok(object sender, RoutedEventArgs e)
{
// Check if the Height and Width text boxes are empty or null
if (string.IsNullOrEmpty(Height.Text) && string.IsNullOrEmpty(width.Text))
{
// If both are empty, do nothing
}
else
{
// If at least one text box has a value, convert the text to integers
q = Convert.ToInt32(Height.Text);
p = Convert.ToInt32(width.Text);
// Call the method Thickness1() to perform some calculations
Thickness1();
}
}
```
This code is a method that handles a button click event. It checks if the Height and Width text boxes are empty or null, and if not, converts their values to integers. Then it calls another method called Thickness1() to perform some calculations.
private void InjectStopOnClick(object sender, RoutedEventArgs e) { IsReading = !IsReading; if (IsReading) Task.Factory.StartNew(Read); }将这段代码改写成当数据改变时发生
我不确定您的问题的具体含义,但我会尝试回答它。如果您希望在数据更改时触发某些操作,您可以使用数据绑定和属性更改通知。您可以将属性定义为具有get和set访问器,并在set访问器中触发PropertyChanged事件。然后,在XAML中将该属性绑定到UI元素的属性,例如按钮的IsEnabled属性。当属性更改时,将自动更新UI元素。以下是一个示例:
```
private bool _isReading;
public bool IsReading
{
get { return _isReading; }
set
{
if (_isReading != value)
{
_isReading = value;
OnPropertyChanged(nameof(IsReading));
if (IsReading) Task.Factory.StartNew(Read);
}
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
```
然后,在XAML中将按钮的IsEnabled属性绑定到该属性:
```
<Button Content="Stop" IsEnabled="{Binding IsReading}" Click="InjectStopOnClick"/>
```
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