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I am trying to add web reference when adding web reference url in windows application it shows error like this. how do i solve it?

There was an error downloading 'http://www.example.com/BackEndWebService/LoginWebService.asmx/$metadata'.

The request failed with the error message:

$metadata Web Service method name is not valid.

Ct.Manoj
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  • Are you adding it as a web reference, or a service reference? Web references are deprecated. – Nikki9696 Mar 29 '16 at 18:17
  • I am adding it as Service Reference which displays dailogue box , in advanced button i clicked Add Web Reference and enter the url – Ct.Manoj Mar 30 '16 at 06:33
  • Can you open it in a browser? There might be an issue with the web service. See http://blog.consejoinc.com/2012/12/interesting-cause-for-exception.html – Nikki9696 Mar 30 '16 at 13:39
  • yes,i open it in a bowser and it is working well.. – Ct.Manoj Mar 31 '16 at 05:32
  • Just had the same issue, I finally figured out that selecting the service on VS and going to properties shows the url, just changed it and it worked. – Red Jun 16 '16 at 04:01

2 Answers2

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I had the same issue the other day when tried to update the web reference and managed to fix it by adding ?WSDL at the end. That should work.

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Farzad Jafarizadeh
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  • Thanks! In my case was a external java web service and I replaced the dot by a question mark: https://webservice.web/webservicename.wsdl --> https://webservice.web/webservicename?wsdl and it worked! – rasputino Jan 18 '17 at 09:57
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    Is this behavior explained/documented somewhere? – Doc Jan 23 '17 at 15:20
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In my case, I got this error for adding a Hashtable as a parameter and it failed because it's not supported:

The type system.collections.hashtable is not supported because it implements IDictionary

IDictionary is not serializable, so in my case I switched to a simple array

Milana
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