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Dynamically referencing a Label Control

Hi.

I'm trying to write a generalevent that highlights a textbox and an associated label. This event isthetied to multiple textbox's Enter event.

So far I have this, which successfully changes the background color of the textbox to lightblue when the user enters the textbox.

private void HightLight(object sender, System.EventArgs e)

{

TextBox t = (TextBox)sender;

t.BackColor = Color.LightBlue;

}

But how do I make a reference to the associated label?

The naming of my textbox's and labels are the sameexcept for a txt and lbl prefix.

ie: a customer textbox and customer label would be named "txtCustomer" and "lblCustomer" respectively.

Through string manipulation I am able to derivie the label's name from the sender's textbox's name. But is there a way to now reference the label given that I know it's name?

MTech8 Friday, July 13, 2007 3:58 PM

You can use the Textbox' Parent.Controls property to find the label back. Here's an example:

private static void HighLight(object sender, bool enter) {
Control ctl = sender as Control;
if (ctl == null) return;
ctl.BackColor = enter ? Color.LightBlue : Color.Empty;
// Find matching label, assume control's name has a 3-letter prefix (like "txtSample")
string lblName = "lbl" + ctl.Name.Substring(3);
Control lbl = ctl.Parent.Controls[lblName] as Control;
if (lbl != null) lbl.Font = new Font(lbl.Font, enter ? FontStyle.Bold : FontStyle.Regular);
}
private void txtSample_Enter(object sender, EventArgs e) {
HighLight(sender, true);
}
private void txtSample_Leave(object sender, EventArgs e) {
HighLight(sender, false);
}

nobugz Friday, July 13, 2007 4:16 PM