URL Validity

[Luke Davis]

Is there an easy method that takes a URL string and checks if it is valid?

Luke

[Robbe Morris - [MVP] C#]

What would you consider "invalid"?

--
Robbe Morris [Microsoft MVP - Visual C#]
..NET PropertyGrid Control - ListBox, ComboBox, and Custom Classes
http://www.eggheadcafe.com/tutorials...d-control.aspx


"Luke Davis" <lu**@gorealco.comwrote in message
news:eO****************@TK2MSFTNGP03.phx.gbl...

Is there an easy method that takes a URL string and checks if it is valid?

Luke

[Cowboy \(Gregory A. Beamer\)]

You can Regex the string, but something like

http://www.thisisafakesite.com/default.aspx

would be seen as valid, as it is correctly formed. You would have to
actually issue a request to the server and check the return code to
determine if it was a real site.

--
Gregory A. Beamer
MVP, MCP: +I, SE, SD, DBA

*************************************************
| Think outside the box!
|
*************************************************
"Luke Davis" <lu**@gorealco.comwrote in message
news:eO****************@TK2MSFTNGP03.phx.gbl...

Is there an easy method that takes a URL string and checks if it is valid?

Luke

[Luke Davis]

Invalid as in a 404 error or if it's an image it will come back with a red
"x". There be nothing at the domain. So if I passed http://google.com/
it would come back true, but if I passed http://asfsaf3985r2934.com it will
come back false.
"Robbe Morris - [MVP] C#" <in**@eggheadcafe.comwrote in message
news:uP****************@TK2MSFTNGP05.phx.gbl...

What would you consider "invalid"?

--
Robbe Morris [Microsoft MVP - Visual C#]
.NET PropertyGrid Control - ListBox, ComboBox, and Custom Classes
http://www.eggheadcafe.com/tutorials...d-control.aspx


"Luke Davis" <lu**@gorealco.comwrote in message
news:eO****************@TK2MSFTNGP03.phx.gbl...

>Is there an easy method that takes a URL string and checks if it is
valid?

Luke

[Robbe Morris - [MVP] C#]

HttpWebRequest and HttpWebResponse

There are tons of samples for these two classes.

--
Robbe Morris [Microsoft MVP - Visual C#]
..NET PropertyGrid Control - ListBox, ComboBox, and Custom Classes
http://www.eggheadcafe.com/tutorials...d-control.aspx


"Luke Davis" <lu**@gorealco.comwrote in message
news:eK****************@TK2MSFTNGP04.phx.gbl...

Invalid as in a 404 error or if it's an image it will come back with a red
"x". There be nothing at the domain. So if I passed
http://google.com/ it would come back true, but if I passed
http://asfsaf3985r2934.com it will come back false.
"Robbe Morris - [MVP] C#" <in**@eggheadcafe.comwrote in message
news:uP****************@TK2MSFTNGP05.phx.gbl...

>What would you consider "invalid"?

--
Robbe Morris [Microsoft MVP - Visual C#]
.NET PropertyGrid Control - ListBox, ComboBox, and Custom Classes
http://www.eggheadcafe.com/tutorials...d-control.aspx


"Luke Davis" <lu**@gorealco.comwrote in message
news:eO****************@TK2MSFTNGP03.phx.gbl...

>>Is there an easy method that takes a URL string and checks if it is
valid?

Luke

[Donn Felker]

I have a post on how to work with HttpWebRequest here:
http://blog.donnfelker.com/2007/09/1...PNETsCURL.aspx

[Jesse Houwing]

Hello Cowboy (Gregory A. Beamer),

You can Regex the string, but something like

http://www.thisisafakesite.com/default.aspx

would be seen as valid, as it is correctly formed. You would have to
actually issue a request to the server and check the return code to
determine if it was a real site.

*************************************************
| Think outside the box!
|
*************************************************
"Luke Davis" <lu**@gorealco.comwrote in message
news:eO****************@TK2MSFTNGP03.phx.gbl...

>Is there an easy method that takes a URL string and checks if it is
valid?

Luke

You could always pass it to the URI class and see what happens. My guess
is that it will choke on incorrectly formatted URI's.

--
Jesse Houwing
jesse.houwing at sogeti.nl