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Delete Session Variable VI

LabVIEW 2013 Help

Edition Date: June 2013

Part Number: 371361K-01

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Owning Palette: Sessions VIs

Requires: Full Development System (Windows)

Deletes the HTTP session variable associated with the name key. You can create session variables by first establishing an HTTP session with the Create Session VI and then using the Write Session Variable VI to create the variables.

Note  For more information about concepts in this topic, refer to the Web services introduction and tutorial.

LabVIEW Web Service Request is an identifier used by Web Services VIs to reference a specific HTTP request. LabVIEW Web Service Request works similarly to a refnum in LabVIEW, allowing you to wire together Web Services Vis within your application. You must wire Web Services Vis to the LabVIEW Web Service Request control or an existing value from the LabVIEW Web Service Request out terminal of another VI.

When you use Web Services VI(s) within a Web method VI, you must assign the original LabVIEW Web Service Request control to the connector pane of the Web method VI.
key identifies the session variable to delete. This value must match the key value used to create the session variable with the Write Session Variable VI.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
LabVIEW Web Service Request out is an identifier that VIs on the Web Services palette use to reference a specific HTTP request. Use LabVIEW Web Service Request out to wire together Web Services Vis within your application.
error out contains error information. This output provides standard error out functionality.

 

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