如何限制WPF文​​本框中的特殊字符 [英] How can I restrict special character in WPF text box

问题描述

大家好



请求您帮助限制WPF文​​本框中的特殊字符，包括shift键+键



所有正则表达式都不考虑 shiftkey +键的组合。



这就是我所说的不适用于 shiftkey 的组合



var regex = new Regex（@[^ a-zA-Z0-9 \\ \\ s]）;

if（regex.IsMatch（e.Key.ToString（）））

{

e.Handled =真的;

}



问候

解决方案

你为什么不呢？探索WPF TextBoxes的各种EventHandler，并拒绝你不想通过的键？



在Windows Forms中这很容易将TextBox条目限制为只有字母和数字：

  private   void  textBox1_KeyPress（对象 sender，KeyPressEventArgs e）
 {
 e.Handled =！ Char.IsLetterOrDigit（e.KeyChar）; 
} 

WPF的架构（附加事件，事件路由等）使这更加困难：[ ^ ]。



你可以找到一些限制密钥输入的代码示例此QA线程解决方案中的WPF TextBox：[ ^ ]。

Hi All

Request your help in restricting special character in WPF text box including "shift key" + "Keys"

All regular expressions are not considering the combination of shiftkey + keys.

This is what I've which doesn't work with the combination of shiftkey

var regex = new Regex(@"[^a-zA-Z0-9\s]");
if (regex.IsMatch(e.Key.ToString()))
{
e.Handled = true;
}

Regards

解决方案

Why don't you explore the various EventHandlers for WPF TextBoxes, and reject the keys you don't want to get through ?

It's this easy in Windows Forms to restrict TextBox entry to only letters and digits:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    e.Handled = ! Char.IsLetterOrDigit(e.KeyChar);
}

The architecture of WPF (Attached Events, Event Routing, etc.) makes this more difficult: [^].

You can find some code examples of restricting key-entry in the WPF TextBox in the solutions on this QA thread here: [^].

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