Is it possible to know when TextBox loses focus to which object it

[Guest]

Hi,

Is it possible to know when TextBox loses focus to which object it lost it?
what i mean is when the LostFocus Event occur is it possible to know which
object got the focus instead?

thanks,

 

[Morten Wennevik]

Hi Gidi,

I believe you will need to traverse all the controls to see which one has the Focused property set.

private void textBox_LostFocus(object sender, EventArgs e)
{
foreach(Control c in this.Controls)
{
if(c.Focused)
label1.Text = c.Name;
}
}

Of course, if you got any container controls with child controls inside you will need to do it recursively or, when creating the Form, add all 'focusable' controls to a list of your own.

 

[cody]

better would be to use the ActiveControl property of
System.Windows.Forms.Form class.

Hi Gidi,

I believe you will need to traverse all the controls to see which one has the Focused property set.

private void textBox_LostFocus(object sender, EventArgs e)
{
foreach(Control c in this.Controls)
{
if(c.Focused)
label1.Text = c.Name;
}
}

Of course, if you got any container controls with child controls inside

you will need to do it recursively or, when creating the Form, add all
'focusable' controls to a list of your own.

 

[Morten Wennevik]

Well, the ActiveControl property is good if you use TAB to change between Controls. However, if the user left-clicks on another control, the ActiveControl will not be updated before LostFocus is triggered.

better would be to use the ActiveControl property of
System.Windows.Forms.Form class.

Hi Gidi,

I believe you will need to traverse all the controls to see which one has the Focused property set.

private void textBox_LostFocus(object sender, EventArgs e)
{
foreach(Control c in this.Controls)
{
if(c.Focused)
label1.Text = c.Name;
}
}

Of course, if you got any container controls with child controls inside

you will need to do it recursively or, when creating the Form, add all
'focusable' controls to a list of your own.