Winform中的空密码字符

Null Password Char in Winform(Winform中的空密码字符)

问题描述

我在 c# windows 窗体中有一个 textbox 我在将空值分配给 PasswordChar 时遇到问题.我想要做的是，如果一个 checkbox 被选中，那么 PasswordChar 应该是 null 即应该显示实际的文本，否则 PasswordChar 应该是 *.这是我尝试过的

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 = '';
        }
    }

但是这一行

     txtPassword.PasswordChar = ''; 

正在生成错误.我什至尝试过

is generating an error. I have even tried

     txtPassword.PasswordChar = null;

但我仍然收到错误.

请帮我更正我的代码.

推荐答案

要重置 PasswordChar，请执行此操作 txtPassword.PasswordChar = '';

To reset PassswordChar, do this txtPassword.PasswordChar = '';

为了您的方便:

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

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