using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace testLabelsinApp { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { ContolsInApplication.ClearLabels(this); } } class ContolsInApplication { public static void ClearLabels(Form f) { foreach(Control c in f.Controls) { if(c is Label) { c.Visible = false; } } } } }