C# 在 WPF 中单击按钮后如何清除文本框？
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How to clear a textbox once a button is clicked in WPF?
提问by Anjola
How can I clear a textboxonce a button is clicked in the WPF application, I know I have to do it in click method of the button but what code should I use for the mentioned purpose?
textbox在 WPF 应用程序中单击按钮后如何清除，我知道我必须在按钮的 click 方法中执行此操作，但是我应该使用什么代码来实现上述目的？
采纳答案by ChrisO
Give your textbox a name and then use TextBoxName.Text = String.Empty;
为您的文本框命名，然后使用 TextBoxName.Text = String.Empty;
回答by devdigital
You wouldn't have to put it in the button click hander. If you were, then you'd assign your text box a name (x:Name) in your view and then use the generated member of the same name in the code behind to set the Textproperty.
您不必将它放在按钮单击处理程序中。如果是，那么您可以x:Name在视图中为文本框指定一个名称 ( )，然后在后面的代码中使用生成的同名成员来设置该Text属性。
If you were avoiding code behind, then you would investigate the MVVM design pattern and data binding, and bind a property on your view model to the text box's Textproperty.
如果您要避免代码隐藏，那么您将研究 MVVM 设计模式和数据绑定，并将视图模型上的属性绑定到文本框的Text属性。
回答by misak
For example:
例如：
XAML:
XAML：
<Button Content="ok" Click="Button_Click"/>
<TextBlock Name="textBoxName"/>
In code:
在代码中：
private void Button_Click(object sender, RoutedEventArgs e)
{
textBoxName.Text = "";
}
回答by misak
I use this. I think this is the simpliest way to do it:
我用这个。我认为这是最简单的方法：
textBoxName.Clear();
回答by Er. Harry Singh
When you run your form and you want showing text in textbox is clear so you put the code : -
当您运行表单并希望在文本框中显示文本时很清楚，因此您可以输入代码：-
textBox1.text = String.Empty;
Where textBox1 is your textbox name.
其中 textBox1 是您的文本框名称。
回答by Nio74
For me texBoxName.Clear();is the best method because I have textboxs in binding and if I use other methods I do not have a good day
对我来说texBoxName.Clear();是最好的方法，因为我有绑定文本框，如果我使用其他方法，我的日子不好过
回答by Farhan Aslam
You can use Anyof the statement given below to clear the text of the text box on button click:
您可以使用下面给出的任何语句来清除按钮单击时文本框的文本：
textBoxName.Text = string.Empty;textBoxName.Clear();textBoxName.Text = "";
textBoxName.Text = string.Empty;textBoxName.Clear();textBoxName.Text = "";
回答by Tomá? Oplatek
There is one possible pitfall with using textBoxName.Text = string.Empty;and that is if you are using Text binding for your TextBox (i.e. <TextBox Text="{Binding Path=Description}"></TextBox>). In this case, setting an empty string will actually override and break your binding.
使用存在一个可能的陷阱，textBoxName.Text = string.Empty;那就是如果您为 TextBox（即<TextBox Text="{Binding Path=Description}"></TextBox>）使用文本绑定。在这种情况下，设置空字符串实际上会覆盖并破坏您的绑定。
To prevent this behavior you have to use the Clear method:
为了防止这种行为，您必须使用 Clear 方法：
textBoxName.Clear();
This way the TextBox will be cleared, but the binding will be kept intact.
这样 TextBox 将被清除，但绑定将保持不变。
