using System; using System.Linq; using System.Windows.Forms; namespace KMBIM { public partial class GetRadius : Form { public GetRadius() { InitializeComponent(); } private void GetRadius_KeyDown(object sender, KeyEventArgs e) { if (e.KeyCode == Keys.Escape) { //this.Close(); this.DialogResult = DialogResult.Cancel; } else if (e.KeyCode == Keys.Enter) { this.DialogResult = DialogResult.OK; } } private void GetRadius_Load(object sender, EventArgs e) { this.KeyPreview = true; } private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { int keyCode = (int)e.KeyChar; if ((keyCode < 48 || keyCode > 57) && keyCode != 8 && keyCode != 46) e.Handled = true; if (keyCode == 46) { if (string.IsNullOrEmpty(textBox1.Text) || textBox1.Text.Contains('.') == true) e.Handled = true; } } } }