QuickOPC User's Guide and Reference
DiscoveryUriString Property (UADiscoveryElement)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.Discovery Namespace > UADiscoveryElement Class : DiscoveryUriString Property
The URL that can be used to reach the application, using discovery.
Syntax
'Declaration
 
<DefaultValueAttribute()>
<IgnoreDataMemberAttribute()>
<XmlIgnoreAttribute()>
Public Property DiscoveryUriString As String
'Usage
 
Dim instance As UADiscoveryElement
Dim value As String
 
instance.DiscoveryUriString = value
 
value = instance.DiscoveryUriString
[DefaultValue()]
[IgnoreDataMember()]
[XmlIgnore()]
public string DiscoveryUriString {get; set;}
[DefaultValue()]
[IgnoreDataMember()]
[XmlIgnore()]
public:
property String^ DiscoveryUriString {
   String^ get();
   void set (    String^ value);
}
Remarks

This value can be used as OpcLabs.BaseLib.ResourceDescriptor.UrlString.

A generic string is used instead of System.Uri, because in some cases, the value may not represent a real URI.

This value is derived from DiscoveryUriStrings. When DiscoveryUriStrings contains precisely one element, DiscoveryUriString is equal to value of this element. Otherwise, DiscoveryUriString is an empty string. Assigning a non-empty string to DiscoveryUriString clears the DiscoveryUriStrings and adds this string as a single element to the collection. Assigning an empty string to DiscoveryUriString has no effect.

Certain types of discovery queries, such as UALocalApplicationDiscoveryQuery or UALocalApplicationDiscoveryQuery with the Flat parameter set to true always return application elements which have precisely one discovery URI, and in such case it is guaranteed that DiscoveryUriString contains a non-empty string.

Requirements

Target Platforms: Windows 7 with SP1, Windows Server 2008 R2 with SP1

See Also

Reference

UADiscoveryElement Class
UADiscoveryElement Members