SqlTrackingQuery Constructors

public:
 SqlTrackingQuery();

public SqlTrackingQuery ();

Public Sub New ()

Remarks

The parameterless constructor initializes ConnectionString to a null reference (Nothing in Visual Basic). You must set ConnectionString before you call GetWorkflows or TryGetWorkflow or an InvalidOperationException will be thrown.

public:
 SqlTrackingQuery(System::String ^ connectionString);

public SqlTrackingQuery (string connectionString);

new System.Workflow.Runtime.Tracking.SqlTrackingQuery : string -> System.Workflow.Runtime.Tracking.SqlTrackingQuery

Public Sub New (connectionString As String)

Parameters

Exceptions

Examples

The following code example demonstrates how to use the SqlTrackingQuery to create an instance of the SqlTrackingQuery class.

This code example is part of the Workflow Monitor SDK Sample from the DatabaseService.cs file. For more information, see Workflow Monitor.

internal bool TryGetWorkflow(Guid workflowInstanceId, out SqlTrackingWorkflowInstance sqlTrackingWorkflowInstance)
{
    SqlTrackingQuery sqlTrackingQuery = new SqlTrackingQuery(connectionString);
    return sqlTrackingQuery.TryGetWorkflow(workflowInstanceId, out sqlTrackingWorkflowInstance);
}

Friend Function TryGetWorkflow(ByVal workflowInstanceId As Guid, ByVal sqlTrackingWorkflowInstance As SqlTrackingWorkflowInstance) As Boolean
    Dim SqlTrackingQuery As New SqlTrackingQuery(connectionString)
    Return SqlTrackingQuery.TryGetWorkflow(workflowInstanceId, sqlTrackingWorkflowInstance)
End Function

Remarks

The ConnectionString property is initialized to connectionString.

See also

• Workflow Monitor