Problem: An error occurred while updating splistitem, that is, item. Update (), after elevation of permission.

 

[Problem description]

When updating list items in the list, we often need to useSpsecurity. Runwithelevatedprivileges (Delegate(){}ToItem. Update ()But sometimes this will cause errors.

 

Solution 1]

1.SetItem. Update ()After the permission is upgradedSiteAnd text in the elevation of permissions:

SplistList =Null;

Spsecurity. Runwithelevatedprivileges (Delegate()

{

Site =New Spsite(Sitecollectionurl );

Web = site. rootweb;

});

 

List = web. Lists ["Notification library"];

SplistitemItem = List. Items. Add ();

IItem [title] ="123 ";

Item. Update ();

 

2.After the permission is upgradedListitemSimilar errors may also occur and can be solved in the same way:

Protected VoidPage_load (ObjectSender,EventargsE)

{

 

Spsecurity. Runwithelevatedprivileges (Delegate()

{

Updateitem ();

}

);

}

 

VoidUpdateitem ()

{

SpsiteSite =New Spsite("Http: // ssjin073: 9032");

 

SpwebWeb = site. rootweb;

 

//Force set context object

Httpcontext. Current. items ["Httphandlerspweb"] = Web;

 

Web. allowunsafeupdates =True;

SplistList = web. Lists ["Mainlist"];

 

SplistitemItem = List. items [0];

 

Item ["Title"] =Datetime. Now. tostring ();

 

Item. Update ();

 

Web. Dispose ();

Site. Dispose ();

}

 
The second method comes from:Http://www.cnblogs.com/jianyi0115/archive/2008/04/11/1148827.html