如何在文本框中仅允许使用字母和/? [英] How to Allow only Alphabets and / on text box?

问题描述

我必须输入一个部门文本，它必须像这样的/AAA/AAA/AAA/AAA/AAA/，它已经像我们输入的文本一样显示了这是__/__/__/__/__

请使用PLS帮助我SIR吗?

I have to Enter in to an Sector text, it has to come like this /AAA/AAA/AAA/AAA/AAA/,ITS ALREADY THE TEXT HAS SET AS WHEN WE HAD ENTERED IN TO THAT TEXT IT WILL SHOWS LIKE THIS __/__/__/__/__

PLS HELP ME SIR?

推荐答案

使用MaskedTextBox

http://msdn.microsoft.com/en-us/library/system.windows.forms.maskedtextbox.mask.aspx [ ^ ]

use MaskedTextBox

http://msdn.microsoft.com/en-us/library/system.windows.forms.maskedtextbox.mask.aspx[^]

在TextBox上添加KeyPress事件处理程序.
然后将这段代码放入文本框中.这将只允许使用字母或/.

Add a KeyPress event handler on the TextBox.
Then put in this code into the textbox. This will allow only alphabets or /.

private void textBox_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!Regex.IsMatch(textbox.Text, @"[a-zA-Z/]"))
    {
        e.Handled = true;
    }
}

<pre>Regex rx = new Regex(@"^[a-zA-Z]+

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