private void butValidate4_Click(object sender, EventArgs e) { try { int x = int.Parse(String4.Text, System.Globalization.NumberStyles.None); String4.Text = x.ToString(); } catch (Exception) { MessageBox.Show("Enter only numbers"); String4.Clear(); } }
private void butValidateall_Click(object sender, EventArgs e) { string a = string1.Text; for (int i = 0; i <= a.Length; i++) { a = a.Replace("$", ""); a = a.Replace("@", ""); a = a.Replace("#", ""); a = a.Replace("%", ""); a = a.Replace("&", ""); a = a.Replace("^", ""); a = a.Replace("*", ""); } outptstring1.Text = a; string b = String3.Text; if (b.StartsWith(" ") || b.StartsWith("$") || b.StartsWith("@") || b.StartsWith("%") || b.StartsWith("#")) { MessageBox.Show("The string3 can't start with a space or $ or @ or % or #"); String3.Clear(); String3.Focus(); } string c = string2.Text; if (c.EndsWith(" ") || c.EndsWith("$") || c.EndsWith("@") || c.EndsWith("%") || c.EndsWith("#")) { MessageBox.Show("The string2 can't End with a space or $ or @ or % or #"); string2.Clear(); string2.Focus(); } try { int x = int.Parse(String4.Text, System.Globalization.NumberStyles.None); String4.Text = x.ToString(); } catch (Exception) { MessageBox.Show("Enter only numbers"); String4.Clear(); } }