URL VALIDATION

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Hello everyone,

I am trying to validate url.
I'm using HttpWebRequest and HttpWebResponse for this but in each case i'm getting an exception.

Following is my code for validation

Uri _url = new Uri(TextUrl);
            MessageBox.Show(_url.ToString()); //jus to check url content
            HttpWebRequest webrequest = (HttpWebRequest)WebRequest.Create(_url);
                try
                {
                 HttpWebResponse webresponse = (HttpWebResponse)webrequest.GetResponse();
}


catch
                {
                    MessageBox.Show("this url is not valid");
                    TextUrl = "";
                    url.Focus();
}

When I'm entring url in proper syntax like "http://www.gmail.com"
I'm getting customized exception.

But if I'm entering url like "www.gmail.com"
its throwing an error :sigh:
Please reply soon if anyone have any ideas.

Posted 4-Oct-10 20:35pm

Ashutosh kumar Tripathi

Updated 4-Oct-10 21:38pm

Dalek Dave

v3

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Dalek Dave 5-Oct-10 3:38am

Edited for Grammar, Spelling and Readability.

1 solution

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Al-Farooque Shubho · Accepted Answer · 2010-10-04T22:50:00

Two issues:

1. if you enter www.gmail.com in the text box, you have to check the URL format in programmatic way and add the (http://) portion so that, the input URL actually become http://www.gmail.com before calling WebRequest.Create(url);

2. I have tested the code with setting the url to "http://www.gmail.com" and it works quite fine (Doesn't throw any exception). You please try to debug your code and check whether there is any other code that throws exception. Also, you need to make sure that your machine has Internet connection enable so that your code actually is able to hit a web request.

also, you should modify the try..catch portion so that, you can view the exact exception detail as follows:

try
{
..
}
catch(Exception ex)
{
    MessageBox.Show(ex.ToString());
}