Is it Possible to declare Key Event Args in CheckedChanged Event Args

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Hello can any one help.

I have CheckBox and TextBox in Windows Forms, I would like to have if i make (CheckBox.checked==false) and TextBox.Text is not null, then i would like to make TextBox.clear() and next step I would like TextBox Key.Enter eventargs, then TextBox.Enable==false.

Here is the code

C#

private void checkbox_CheckedChanged(object sender, EventArgs e)
          {
              if (checkbox.Checked == true)
              {
                  this.textBox1.Enabled = true;
              }

               if (checkbox.Checked == false)
              {
                  textBox1.Clear();

              // here i want textBox1.KeyEnterEventArgs "Enter" key pressed ..........

                  this.textBox1.Enabled = false;
              }

          }

Is it possible to do this please, thanks in advance

Posted 29-Nov-12 21:57pm

getanswer

Updated 29-Nov-12 22:50pm

André Kraak

v2

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lukeer · Accepted Answer · 2012-11-29T23:07:00

Don't simulate pressing of a key. If it will do anything, you have an event handler attached anyway. Call that method directly instead of making the event call it.

[Edit]
There are two independent errors in your comment:

1. e.KeyCode = Keys.Enter;
is not possible since e.KeyCode[^] is readonly. What do you want to achieve by doing this?

2. textBox_KeyDown(sender,e);
doesn't work because here your e is of type EventArgs[^], but the method you're calling expects a KeyEventArgs[^] as second parameter.

This is how you could get that to work:

C#

private void MethodNameDescribingTheActionToTake()
{
    // Do whatever needs to be done.
}

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
    MethodNameDescribingTheActionToTake();
}

private void checkbox_CheckedChanged(object sender, EventArgs e)
{
    if (checkbox.Checked == true)
    {
        this.textBox1.Enabled = true;
    }

    if (checkbox.Checked == false)
    {
        textBox1.Clear();

        MethodNameDescribingTheActionToTake();

        this.textBox1.Enabled = false;
    }
}

[/Edit]