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HomeHomeDevelopment and...Development and...Building ExtensionsBuilding ExtensionsModulesModulesCalls to UserProfile.GetProfileProperty Causing Page to CrashCalls to UserProfile.GetProfileProperty Causing Page to Crash
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8/19/2016 1:11 PM
 

Since updating to DNN 8 I've had a strange problem with some custom modules we've developed. A few of our custom modules allow viewing profile information for several users on a site (in some cases 50-100 users). Since the update pages using UserInfo.FirstName, UserInfo.LastName, or any other properties that call to the UserProfile object run extremely slowly - enough to crash the page if there are several such calls. Any idea why this might be happening or what could be done about it?

As an example, here's one piece of code that causes problems:

foreach (Reservation r in reservations)
{
    UserInfo user = UserController.GetUserById(PortalId, sr.StudentID);
    r.Name = user.LastName + ", " + user.FirstName;
}

Thanks in Advance.

 
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8/23/2016 7:38 AM
 
you might check performance of the database by using SQL Server Profiler, however, retrieving user data one by one, each resulting in multiple database calls, is always far from optimal for performance (event though Admin > User Management is using same approach)

Cheers from Germany,
Sebastian Leupold (Microsoft MVP)

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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8/31/2016 6:24 PM
 

My understanding is that UserInfo objects are stored in memory via the caching provider. Is that no longer the case? Also, it seems strange that the UserInfo.FirstName and UserInfo.LastName call out to the Profile object while DisplayName just grabs directly from the Users table, especially since FirstName and LastName are columns in the Users table as well. 

 
New Post
9/1/2016 3:06 AM
 
the userinfo, membership and profile objects are retrieved one by one and cached, however, the number of calls might be larger than optimal.

Cheers from Germany,
Sebastian Leupold (Microsoft MVP)

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
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