如何在C＃中禁用文本框 [英] How do I disable textbox in C#

问题描述

嗨！这是Atta Ur Rahman。我有两个问题。第一个是禁用文本框。在形式上我有单选按钮男和女。和一个文本框丈夫名字和丈夫NIC。当我检查男性按钮。我想要禁用丈夫姓名和丈夫的texbox。

另一个问题是这个，我想要允许texbox只有字母表。



我尝试过：



i试图在tex框中允许数字，但我不知道如何不允许数字。

Hi! This is Atta Ur Rahman. I have Two Question. First one is to disable textbox. in form i have radio Button "Male" and "Female". and a textbox " Husband Name" and Husband NIC". when I check "Male" button. I want to disable both the texboxes of husband name and husband nic.
Another question is this, i want to allow the texboxes only alphabets.

What I have tried:

i tried to allow the numeric in tex boxes but i don't know how to not allow the numerics.

private void txbxralativenic_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (!char.IsDigit(e.KeyChar) && e.KeyChar != '-' && !char.IsControl(e.KeyChar))
            {
                e.Handled = true;
            }
            if (txbxralativenic.Text.Length > 14 && !char.IsControl(e.KeyChar))
            {
                e.Handled = true;
            }
        }

推荐答案

如果textBox1是丈夫姓名和radioButton1的文本框是男性选择的广播，然后

If textBox1 is the text box for husband name and radioButton1 is the radio for male option, then

private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
	textBox1.Enabled = !radioButton1.Checked;
}

对于下一个问题，请查看： Windows窗体中的用户输入验证 [ ^ ]

For the next question, check this out: User Input Validation in Windows Forms[^]

尝试：

Try:

MyTextBox.Enabled = false;

对于仅数字输入，我不会使用TextBox - 你可以做到，但它有点像PITA，因为你必须防止粘贴和键盘输入。

相反，我建议你使用NumericUpDown控件 - 它只允许数字，并允许您设置最大值和最小值。

For numeric only input, I wouldn't use a TextBox - you can do it, but it's a bit of a PITA because you have to prevent Pasting as well as keyboard entry.
Instead, I'd suggest you use a NumericUpDown control - it will only allow numbers, and allows you to set a maximum and minimum value as well.

这篇关于如何在C＃中禁用文本框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！