XMLDA.NET Reference
XmlServer Class Members
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xmldanet Namespace : XmlServer Class


Glossary Item Box

The following tables list the members exposed by XmlServer.

Public Constructors

 NameDescription
Public ConstructorXmlServer ConstructorOverloaded.   
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Public Fields

 NameDescription
Public FieldbtProperties This property contains definitions for the display of the browse tree.  
Public FieldRingBufferSize Subscription ring-buffer size in the internal OPC-DA gateway. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public FieldUrl URL of the XML-DA serverice or ProgID of the OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
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Public Properties

 NameDescription
Public PropertyCredentials Credentials for the server access (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyEndPointNameWCF endpoint to be used in the server access. The name must be defiend in the WCF Configuration. The default value is "basicHTTP".
This property exists only in the XmlDaNetWCF.DLL (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyOpcDaDisconnectIdleTime Idle time in seconds. The OPC-DA server is disconnected when there is no client acivity for this time. The default is 20 seconds. This property is used only for OPC-DA server access. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyOpcDaReadFromDevice Force all reads made from the device (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyOpcDaWaitAfterAddItems Delay in milliseconds after AddItems to an OPC server group. Some servers need time before a read/write operation can be executed. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyOpcDaWaitAfterConnect Delay in milliseconds after a connect to an OPC DA server. Somer servers need time to be ready for client calls. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyProxy Proxy access for the Web access (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyReadWriteTimeout Read/Write timeout in ms (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyTimeout Client wait timeout in ms (Inherited from xmldanet.xmlda.OpcXmlDA)
Public PropertyUserAgent User agent header sent with each request (Inherited from xmldanet.xmlda.OpcXmlDA)
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Public Methods

 NameDescription
Public MethodBeginBrowse XML-DA method to asynchronously browse an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginGetProperties XML-DA method to asynchronously get item properties from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginGetStatusXML-DA method to asynchronously read the current XML-DA or OPC-DA server status.
The purpose of the GetStatus service is:
- It provides a common mechanism for checking the status of the server - whether it is operational or in need of maintenance.
- It provides a common mechanism for obtaining vendor-specific information about the server that is not available through the other OPC services (version number, etc).
- Provides insight for clients as to the relative time synchronization between the client and server. As an example, this information is useful for Read requests. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginRead XML-DA method to asynchronously read a set of item values from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginSubscribe XML-DA method to asynchronously subscribe a set of item values with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginSubscriptionCancel XML-DA method to asynchronously cancel a subscription with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginSubscriptionPolledRefresh XML-DA method to asynchronously poll subscribed items from either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBeginWrite XML-DA method to asynchronously write a set of item values to either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBrowse XML-DA method to browse an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodBrowseTree A TreeNode structure is created, starting from the specifeid branch. The BrowseElement object returned from the server is copied into the Tag property of the TreeNode object. It contains the detail information according the XML-DA specs.  
Public MethodDataBindCancel Cancels some or all DataBind subscriptions. The server subscription/group is deleted if no DataBind is left active.  
Public MethodDataBindFromXmlFile Load the DataBind definitions from a ListBuilder generated XML file. A DataBind subscription is started with the call parameters and the DataBinds for the items defined in the XML file.  
Public MethodDataBindSubscribe Creates DataBind subscriptions to items of either an XML-DA or OPC-DA server  
Public MethodDispose (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndBrowse XML-DA method to asynchronously browse an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndGetProperties XML-DA method to asynchronously get item properties from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndGetStatusXML-DA method to asynchronously read the current XML-DA or OPC-DA server status.
The purpose of the GetStatus service is:
- It provides a common mechanism for checking the status of the server - whether it is operational or in need of maintenance.
- It provides a common mechanism for obtaining vendor-specific information about the server that is not available through the other OPC services (version number, etc).
- Provides insight for clients as to the relative time synchronization between the client and server. As an example, this information is useful for Read requests. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndRead XML-DA method to asynchronously read a set of item values from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndSubscribe XML-DA method to asynchronously subscribe a set of item values with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndSubscriptionCancel XML-DA method to asynchronously cancel a subscription with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndSubscriptionPolledRefresh XML-DA method to asynchronously poll subscribed items from either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodEndWrite XML-DA method to asynchronously write a set of item values to either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodGetBindValue Get the current item value for the named DataBind. This method is typically called from the ASP.NET DataBind handler. In Windows forms application, where an asynchronous callback into the object/control is possible, this method need not be called.  
Public MethodGetProperties XML-DA method to get item properties for a set of items from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodGetStatusXML-DA method to get the current XML-DA or OPC-DA server status.
The purpose of the GetStatus service is:
- It provides a common mechanism for checking the status of the server - whether it is operational or in need of maintenance.
- It provides a common mechanism for obtaining vendor-specific information about the server that is not available through the other OPC services (version number, etc).
- Provides insight for clients as to the relative time synchronization between the client and server. As an example, this information is useful for Read requests. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodRead XML-DA method to read a set of item values from an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodSubscribe XML-DA method to subscribe a set of item values with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodSubscriptionCancel XML-DA method to cancel a subscription with either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodSubscriptionPolledRefresh XML-DA method to poll subscribed items from either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
Public MethodWrite XML-DA method to write a set of item values to either an XML-DA or OPC-DA server. (Inherited from xmldanet.xmlda.OpcXmlDA)
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Public Events

 NameDescription
Public EventDataBindCallbackError This callback handler is called when an error occurs in the server poll or callback handler. Item and error information is passed in the DataBindInfo argument and the Exception object.  
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See Also

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