wpf textbox只能输入数字，屏蔽中文输入

1、设置textbox属性InputMethod.IsInputMethodEnabled="False"

2、增加KeyDown事件

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private void TextBox_KeyDown(object sender, KeyEventArgs e)         {             #region --对输入中文就没办法屏蔽，可以在Textbox添加属性InputMethod.IsInputMethodEnabled="False"--             //屏蔽非法按键             if (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9)             {                 e.Handled = false;             }             else if (e.Key >= Key.D0 && e.Key <= Key.D9)             {                 e.Handled = false;             }             else             {                 e.Handled = true;             }             #endregion         }