在 C# 中更改密钥

Question

I need to change keys in c#.

Example : if press on "a" then "b" pressing.

Something like this:

Key.change("a","b"); // a = key , b = value

Please note this : key is static and value is dynamic, it's meaning : key = (always) "a" , value = (can be change) "b" || "c" || "d",etc

So if this problem solving with simply way i really glad.

Thanks and sorry for poor english.

Answer 1

On the Form class, add this method & variable :

char change = 'b';
private void ChangeKey(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar=='a')
    {
            e.KeyChar = change;
    }
}

Then either on Load or Form constructor, subscribe to each of input control you have, manually

textBox1.KeyPress += ChangeKey;
textBox2.KeyPress += ChangeKey;

or all of them

 foreach (var item in Controls.OfType<Control>())
 {
    item.KeyPress += ChangeKey;
 }

Answer 2

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
    {
        if (e.KeyChar > (char)001 )
        {
            e.KeyChar++;

        }
    }

also works.