Is there a way to verify Webservice url if it's exists or not?

[goodmorningsky]

Hi all

Is there a way to verify Webservice url if it's exists or not?

 

I have a situation that I have to verify webservice url retrieved from config file before calling Webservice.

 

Thank you..

[HJB417]

try downloading the wsdl file 1st.

[goodmorningsky]

try downloading the wsdl file 1st.

How can I try to download?

 

I've used only VS.NET to get WSDL. so I don't know how to download it programmatically!

[HJB417]

even your web browser can do it.

[goodmorningsky]

even your web browser can do it.

I means...

 

Which method should I use?

Do you have any code snippt for this?

It's hard to find one...

[HJB417]

Here are the two simplest ways to do it using the bcl. The WebClient ,as simple as it is, is unfortunately a GUI component and therefore extends IDisposable. The HttpWebRequest object is more configurable than the WebClient, for example, you can't set the keep-alive property using the WebClient.

using System;
using System.Net;

namespace ConsoleApplication2
{
class Class1
{
	static void Main(string[] args)
	{
		Uri badUri = new Uri("http://www.webservicex.net/WeatherForecast.asewr");
		Uri goodUri = new Uri("http://www.webservicex.net/WeatherForecast.aspx?WSDL");

		Console.WriteLine("WSDL exists @ {0} = {1}", badUri, WsdlExists1(badUri));
		Console.WriteLine("WSDL exists @ {0} = {1}", badUri, WsdlExists2(badUri));

		Console.WriteLine("WSDL exists @ {0} = {1}", goodUri, WsdlExists1(goodUri));
		Console.WriteLine("WSDL exists @ {0} = {1}", goodUri, WsdlExists2(goodUri));
	}

	static bool WsdlExists1(Uri uri)
	{
		using(WebClient wc = new WebClient())
		{
			try
			{
				wc.DownloadData(uri.AbsoluteUri);
				return true;
			}
			catch(WebException error)
			{
				HttpWebResponse response = (HttpWebResponse) error.Response;
				switch(response.StatusCode)
				{
					case HttpStatusCode.NotFound:
						return false;
					default:
						throw;
				}
			}
		}
	}

	static bool WsdlExists2(Uri uri)
	{
		HttpWebRequest request = (HttpWebRequest) WebRequest.Create(uri);
		try
		{
			using(HttpWebResponse response = (HttpWebResponse) request.GetResponse());
			return true;
		}
		catch(WebException error)
		{
			HttpWebResponse response = (HttpWebResponse) error.Response;
			switch(response.StatusCode)
			{
				case HttpStatusCode.NotFound:
					return false;
				default:
					throw;
			}
		}
	}
}
}

[goodmorningsky]

Thank you very much~!!

I got it!