#\ =〜])* [^ \.\，\)\(\ s]

#\=~])*[^\.\,\)\(\s]

" ; Regex reg = 新 Regex(样式，RegexOptions.Compiled | RegexOptions.IgnoreCase)； 返回 reg.IsMatch(url); }

"; Regex reg = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase); return reg.IsMatch(url); }

private void comboBox_Url_Validating(object sender, CancelEventArgs e)
       {
           bool s = isValidUrl(comboBox_Url.Text);
           if (s)
           {
               MessageBox.Show("URL is valid.");
              
           }
           else
           {
               MessageBox.Show("In valid URL.");
               this.comboBox_Url.Focus();
           }

这里是通用表达式

Here is the general expression

^(ht|f)tp(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\''\/\\\+&%\