如何在C＃上启用checkbox.checked的文本框？

Question

I'm new to C#. The textbox1 is locked by default and I want to enable it the moment I check the checkbox1. I use the following code, but it doesn't work:

private void checkboxevent(object sender, EventArgs e)
{
    if (checkBox1.Checked = true)
        textBox1.Enabled = true;
    else
        textBox1.Enabled = false;
}

Answer 1

= is the assignment operator == is the equality operator

Take a close look at the following statement

if (checkBox1.Checked = true)

Answer 2

add autopostaback="true" for your checkbox in order to refresh the page whenever the checkbox is checked or unchecked

I'm assuming that you're talking about webforms.

Also = true is incorrect. It should be == true

Also, == true is altogether redundant. if (checkbox.Checked) is all you need.