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SPListItemVersionCollection Class

Represents a collection of SPListItemVersion objects.

Inheritance Hierarchy

System.Object
  Microsoft.SharePoint.Administration.SPAutoSerializingObject
    Microsoft.SharePoint.SPBaseCollection
      Microsoft.SharePoint.SPListItemVersionCollection

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

Syntax

<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel := True)> _
<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel := True)> _
Public NotInheritable Class SPListItemVersionCollection _
    Inherits SPBaseCollection

Dim instance As SPListItemVersionCollection
[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
public sealed class SPListItemVersionCollection : SPBaseCollection

Remarks

Use the Versions property of the SPListItem class to return the collection of versions for a list item.

Use an indexer to return a single version from the collection. For example, if the collection is assigned to a variable named collListItemVersions, use collListItemVersions[index] in C#, or collListItemVersions(index) in Visual Basic, where index is the index number of the version in the collection. The lower the value of index, the more recent the version.

Examples

The following code example iterates through the items in a list and restores the previous version of the items if a field in the current version equals a specified value.

Dim list As SPList = New SPSite("http://MySiteCollection").AllWebs("MyWebSite").GetList("http://MySiteCollection/MyWebSite/Lists/MyList")
Dim listItems As SPListItemCollection = list.Items

Dim item As SPListItem
For Each item In listItems
    If CStr(item("Title")) = "MyValue" Then
        Dim versions As SPListItemVersionCollection = item.Versions

        If versions.Count > 1 Then
            versions.Restore(1)
        End If
    End If 
Next item
SPList oList = new SPSite("http://MySiteCollection").AllWebs["MyWebSite"].GetList("http://MySiteCollection/MyWebSite/Lists/MyList");

SPListItemCollection collListItems = oList.Items;

foreach (SPListItem oListItem in collListItems)
{
    if ((string)oListItem["Title"] == "MyValue")
    {
        SPListItemVersionCollection collListItemVersions = 
            oItem.Versions;

        if (collListItemVersions.Count > 1)
        {
            collListItemVersions.Restore(1);
        }
}

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

SPListItemVersionCollection Members

Microsoft.SharePoint Namespace