当用户在文本框中输入ssn时添加破折号。无法使用delete\backbutton删除hyphons

本文介绍了当用户在文本框中输入ssn时添加破折号。无法使用delete\backbutton删除hyphons的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 当用户在文本框中输入ssn时，我有一个XAML要求添加破折号。我尝试下面的代码，能够添加短划线，但无法从文本框中删除破折号。每当我尝试删除或使用后退空间连字符都不会被删除 我尝试过： XAML：Hi I have a XAML requirement to add dashes when user is entering ssn in a text box. I tried below code, am able to add dashes, but unable to delete dashes from text box. Whenever i try to delete or use back space hyphens are not deletedWhat I have tried:XAML:<Window x:Class="WpfApplication2.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <grid> <TextBox HorizontalAlignment="Left" Height="23" Margin="10,10,0,0" TextWrapping="Wrap" Name="Txtssn" Text="" MaxLength="11" VerticalAlignment="Top" Width="120" TextChanged="TextBox_TextChanged"/> C＃：C#:using System.Windows;using System.Windows.Controls;namespace WpfApplication2{ public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void TextBox_TextChanged(object sender, TextChangedEventArgs e) { var textBox = sender as TextBox; string data = textBox.Text; if (data.Length == 3) { string formattedSSN = data.Insert(3, "-"); Txtssn.Text = formattedSSN.ToString(); textBox.Focus(); textBox.SelectionStart = textBox.Text.Length; } else if (data.Length == 6) { string formattedSSN = data.Insert(6, "-"); Txtssn.Text = formattedSSN.ToString(); textBox.Focus(); textBox.SelectionStart = textBox.Text.Length;}}}推荐答案 这篇关于当用户在文本框中输入ssn时添加破折号。无法使用delete\backbutton删除hyphons的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！