ScheduledItem.IsScheduledItem Method

Artigo
07/24/2014

Confirms that a SPListItem item is a valid instance of the ScheduledItem class.

Namespace: Microsoft.SharePoint.Publishing
Assembly: Microsoft.SharePoint.Publishing (in Microsoft.SharePoint.Publishing.dll)

Syntax

'Declaration
Public Shared Function IsScheduledItem ( _
    sourceListItem As SPListItem _
) As Boolean
'Usage
Dim sourceListItem As SPListItem
Dim returnValue As Boolean

returnValue = ScheduledItem.IsScheduledItem(sourceListItem)

public static bool IsScheduledItem(
    SPListItem sourceListItem
)

Parameters

sourceListItem
Type: Microsoft.SharePoint.SPListItem

SPListItem to check for validity.

Return Value

Type: System.Boolean
true if the SPListItem is a ScheduledItem; otherwise, false.

Exceptions

Exception	Condition
[System.ArgumentNullException]	The sourceListItem parameter cannot be a null reference (Nothing in Visual Basic).

Remarks

This method confirms that the SPListItem is a member of a document library that supports scheduling, and that it has start and end dates, which are required for scheduling.

Examples

This sample sets a start and end date for a ScheduledItem object and schedules the item so that it is published when the start date is reached and it is unpublished when the end date is reached.

Before compiling and running this sample, verify that the SPListItem is a list item in a document library that supports scheduling.

using ScheduledItem = Microsoft.SharePoint.Publishing.ScheduledItem;
using SPModerationStatusType = Microsoft.SharePoint.SPModerationStatusType;
using SPListItem = Microsoft.SharePoint.SPListItem;
using DateTime = System.DateTime;

namespace Microsoft.SDK.SharePointServer.Samples
{
    public static class ScheduledItemCodeSamples
    {
        public static void SetDatesAndSchedule(SPListItem listItem, 
          DateTime startDate, DateTime endDate)
        {
            // Set the input parameter values with
            // your own values.
            
            //
            // validate the input parameters
            if (null == listItem)
            {
                throw new System.ArgumentNullException("listItem");
            }

            // Get the ScheduledItem wrapper for the SPListItem
            // that was passed in.
            //
            ScheduledItem scheduledItem = null;
            if (ScheduledItem.IsScheduledItem(listItem))
            {
                scheduledItem = ScheduledItem.GetScheduledItem(listItem);
            }
            else
            {
                throw new System.ArgumentException
                  ("The document library containing this SPListItem must support scheduling", 
                  "listItem");
            }

            // Set and save the date values.
            scheduledItem.StartDate = startDate;
            scheduledItem.EndDate = endDate;
            scheduledItem.ListItem.Update();

            // Schedule the item so that the StartDate and EndDate
            // take effect.
            scheduledItem.Schedule();
        }        
    }
}

Imports ScheduledItem = Microsoft.SharePoint.Publishing.ScheduledItem
Imports SPModerationStatusType = Microsoft.SharePoint.SPModerationStatusType
Imports SPListItem = Microsoft.SharePoint.SPListItem

Namespace Microsoft.SDK.SharePointServer.Samples
    Public NotInheritable Class ScheduledItemCodeSamples
        Private Sub New()
        End Sub
        Public Shared Sub SetDatesAndSchedule(ByVal listItem As SPListItem, ByVal startDate As Date, ByVal endDate As Date)
            ' Set the input parameter values with
            ' your own values.

            '
            ' validate the input parameters
            If Nothing Is listItem Then
                Throw New System.ArgumentNullException("listItem")
            End If

            ' Get the ScheduledItem wrapper for the SPListItem
            ' that was passed in.
            '
            Dim scheduledItem As ScheduledItem = Nothing
            If ScheduledItem.IsScheduledItem(listItem) Then
                scheduledItem = ScheduledItem.GetScheduledItem(listItem)
            Else
                Throw New System.ArgumentException ("The document library containing this SPListItem must support scheduling", "listItem")
            End If

            ' Set and save the date values.
            scheduledItem.StartDate = startDate
            scheduledItem.EndDate = endDate
            scheduledItem.ListItem.Update()

            ' Schedule the item so that the StartDate and EndDate
            ' take effect.
            scheduledItem.Schedule()
        End Sub
    End Class
End Namespace

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