private void Add_Click(object sender, EventArgs e) { this.label3.Text = string.Empty; if (this.Name.Text == string.Empty) { this.label3.ForeColor = Color.DarkRed; this.label3.Text = "Name missing"; } else if (this.Value.Text == string.Empty) { this.label3.ForeColor = Color.DarkRed; this.label3.Text = "Value missing"; } else { var isSuccesful = service.AddDynamicPropery(Name.Text, Value.Text); if (!isSuccesful) { this.label3.ForeColor = Color.DarkRed; this.label3.Text = "Already exists"; } else { this.label3.ForeColor = Color.DarkGreen; this.label3.Text = "Succes"; } } }