在winform空密码字符 [英] Null Password Char in Winform

问题描述

我有一个文本在C＃中的windows窗体我有中分配一个空值问题的 PasswordChar 。我想要做的是，如果一个复选框被选中则 PasswordChar 应空即应否则显示的实际文本的 PasswordChar 应 * 。这是我曾尝试

I have a textbox in a c# windows form i am having problems in assigning a null values to a PasswordChar. What i want to do is that if a checkbox is checked then the PasswordChar should be null i.e the actual text should be displayed else the PasswordChar should be *. This what i have tried

    private void checkBox1_CheckedChanged(object sender, EventArgs e)
    {
        if (!checkBox1.Checked)
        {
            txtPassword.PasswordChar = '*';
        }
        else
        {
            txtPassword.PasswordChar = '';
        }
    }

但此行

     txtPassword.PasswordChar = ''; 

时，产生错误。我甚至试过

is generating an error. I have even tried

     txtPassword.PasswordChar = null;

但我仍然得到一个错误。

but i still get an error.

请帮我纠正我的code。

Please help me correct my code.

推荐答案

要重置 PassswordChar ，这样做 txtPassword.PasswordChar ='\\ 0' ;

为了方便您：

private void checkBox1_CheckedChanged(object sender, EventArgs e){
   txtPassword.PasswordChar = checkBox1.Checked ? '*' : '\0';
}

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