// Fetch the HTML Title from remote page
public void GetTitle()
{
// Check Prefix
System.Globalization.CompareInfo cmpUrl = System.Globalization.CultureInfo.InvariantCulture.CompareInfo;
if (cmpUrl.IsPrefix(this.tb_LinkUrl.Text, "http") == false)
{
this.tb_LinkUrl.Text = "http://" + this.tb_LinkUrl.Text;
}
}
public static bool IsValidUrl(string url)
{
if (string.IsNullOrEmpty(url))
{
return(false);
}
System.Globalization.CompareInfo cmpUrl = System.Globalization.CultureInfo.InvariantCulture.CompareInfo;
if (cmpUrl.IsPrefix(url, "http://") == false && cmpUrl.IsPrefix(url, "https://") == false)
{
url = "http://" + url;
}
//Regex urlRegex = new Regex("(^|[^\\w'\"]|\\G)(?<uri>(?:https?|ftp)://(?:[^./\\s'\"<)\\]]+\\.)+[^./\\s'\"<)\\]]+(?:/.*?)?)(\\.[\\s<'\"]|[\\s,<'\"]|$)", RegexOptions.Compiled | RegexOptions.IgnoreCase); // Regex("^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(/?([^#]*))?(#(.*))?");
//^((https?|ftp)://|(www|ftp)\.)[a-z0-9-]+(\.[a-z0-9-]+)+([/?].*)?$
Regex urlRegex = new Regex("^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(/?([^#]*))?(#(.*))?");
return(urlRegex.IsMatch(url));
}
public static bool IsValidUrl(string url)
{
bool bResponse = false;
System.Globalization.CompareInfo cmpUrl = System.Globalization.CultureInfo.InvariantCulture.CompareInfo;
if (cmpUrl.IsPrefix(url, @"http://", System.Globalization.CompareOptions.IgnoreCase) == false)
{
url = @"http://" + url;
}
Regex RgxUrl = new Regex(@"^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*[^\.\,\)\(\s]$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
if (RgxUrl.IsMatch(url))
{
bResponse = true;
}
else
{
bResponse = false;
}
return(bResponse);
}