IDataSource.Cancel()

Description:

The Cancel method cancels an ongoing asynchronous call made with a Landmarks Service API method.

This is a synchronous method.

Syntax:

result = so.IDataSource.Cancel(criteria);

Arguments:

criteria:

This is an object with the TransactionID property (number). criteria.TransactionID specifies the transaction ID of the asynchronous call to cancel. The transaction ID is the result.TransactionID value that was returned as part of the result of the initial call.

Return value:

The Cancel method returns an object that contains an error code and an error message.

**Table:** Return value properties for Cancel
Property	Description	Value
`result.ErrorCode`	This is a number that specifies a predefined error code.	See Service API error codes.
`result.ErrorMessage`	This is a text string that describes the error.	See Landmarks Service API error messages.

Example code:

For the complete source of a sample widget that demonstrates how to use this Service API, see the full example.