XAML代码
< TextBox Height="23" HorizontalAlignment="Left" Margin="100,5,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" DataObject.Pasting="textBox1_Pasting" PreviewKeyDown="textBox1_PreviewKeyDown" InputMethod.IsInputMethodEnabled="False" PreviewTextInput="textBox1_PreviewTextInput"/ > cs代码 //检测粘贴 private void textBox1_Pasting(object sender, DataObjectPastingEventArgs e) { if (e.DataObject.GetDataPresent(typeof(String))) { String text = (String)e.DataObject.GetData(typeof(String)); if (!isNumberic(text)) { e.CancelCommand(); } } else { e.CancelCommand(); } } private void textBox1_PreviewKeyDown(object sender, KeyEventArgs e) { if (e.Key == Key.Space) e.Handled = true; } private void textBox1_PreviewTextInput(object sender, TextCompositionEventArgs e) { if (!isNumberic(e.Text)) { e.Handled = true; } else e.Handled = false; } //isDigit是否是数字 public static bool isNumberic(string _string) { if (string.IsNullOrEmpty(_string)) return false; foreach (char c in _string) { if (!char.IsDigit(c)) //if(c<‘0‘ c="">‘9‘)//最好的方法,在下面测试数据中再加一个0，然后这种方法效率会搞10毫秒左右 return false; } return true; }