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Juan Manuel Palacios
Asked: 2020-05-17 05:49:51 +0800 CST 2020-05-17 05:49:51 +0800 CST

How can I switch control in C# when pressing the Enter key?

  • 772

I am trying to use the mouse as little as possible and for this I need to know if there is any way to be able to change control when pressing the key Enter.

The idea I have is that if I'm on a form with several controls, I'm mostly using controls of type TextBoxbut I could have DateTimePickersor ComboBox; that when pressing Enterskip to the next control, using the order that is given to them when creating them in the form with the property TabIndex.

private void txtOrdenServicio_KeyPress(object sender, KeyPressEventArgs e)
    {
        if (e.KeyChar == (char)13)
        {
            Cargar_OrdenesServicio();
            txtRazonTrabajo.Focus();
        }
    }

With the previous code I have put it in one of the events KeyPressbut if I have 10 I TextBoxwould have to place the control that follows manually. I am working with Windows Form.

Is there any way to achieve this jump?

c#

3 Answers

  1. Best Answer

    To pass to the other control you just need to handle the event OnKeydownof the control you want to work with.

    Example:

    private void TextBox1_KeyDown(object sender, KeyEventArgs e)
{
    // Algúna regla para evitar que se salte al otro control?
    if (e.KeyCode.Equals(Keys.Enter))
        System.Windows.Forms.SendKeys.Send("{TAB}");
}

    Or example 2:

    private void TextBox1_KeyDown(object sender, KeyEventArgs e)
{
    // Algúna regla para evitar que se salte al otro control?
    if (e.KeyCode.Equals(Keys.Enter))
        otroControl.Focus();
}

    If your method Cargar_OrdenesServicio();performs some type of action on the control when changing its value in the text, I recommend you to put said call inside the event OnTextChanged.

    In VB.NET what you want would be a bit easier to implement, because you can handle different unsigned events from the same method, but C# doesn't support implementing an event unless it has its required signature, for events of type Key, the required signature bears the following:

    private void Nombre_Del_Control(object sender, KeyEventArgs e) { }

    That said, you can implement the same method on all controls that support the event OnKeyDownfrom the event browser:

    private void SaltarControl(object sender, KeyEventArgs e)
{
    if (e.KeyCode.Equals(Keys.Enter)) SendKeys.Send("{TAB}");
}

    Signatures and Overloads if you want to understand a little more than what I mentioned.

    I hope it has helped you.

    • 6

  2. The key is to use the GetNextControl () with this you will be able to know which is the next control that should take the focus.

    Using Enter Key as a Tab

    as you will see the keypress you define it at the level of the form to make it global

    private void Form1_KeyDown(object sender, KeyEventArgs e)
{
    Control nextControl ;
    if (e.KeyCode == Keys.Enter)
    {
        nextControl = GetNextControl(ActiveControl, !e.Shift);
        if (nextControl == null)
            nextControl = GetNextControl(null, true);
        nextControl.Focus();
        e.SuppressKeyPress = true;
    }
}

    You could also consider using the Form.ProcessCmdKey to control the form keys even more generally.

    • 4

  3. For it to work correctly it is important that you use the PreviewKeyDown event

    '''

    private void tbContra_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
      if (e.KeyCode.Equals(Keys.Enter))
          button1.Focus();
}

    '''

    • 0