c# - C# 中的文本框输入是否可以限制为格式化类型？

Question

我只想知道是否有一种功能/方法可以将文 native 器人的输入限制为格式化类型，例如用户只能在文本框中输入日期；还是类似于我可以用来实现相同功能的 C 扫描集的函数？

谢谢

Answer 1

如果您正在编写桌面应用程序，您可以使用 MaskedTextBox .

The MaskedTextBox class is an enhanced TextBox control that supports a declarative syntax for accepting or rejecting user input. Using the Mask property, you can specify the following input without writing any custom validation logic in your application:

• Required input characters.

• Optional input characters.

• The type of input expected at a given position in the mask; for example, a digit, or an alphabetic or alphanumeric character.

• Mask literals, or characters that should appear directly in the MaskedTextBox; for example, the hyphens (-) in a phone number, or the currency symbol in a price.

• Special processing for input characters; for example, to convert alphabetic characters to uppercase.