DevForce Community Forum : getting an Entity Original and Current Versions http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : getting an Entity Original and Current Versions Tue, 14 Apr 2026 22:35:15 -700 Thu, 24 Feb 2011 00:53:18 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2526 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ getting an Entity Original and Current Versions : Hi Vijaya, There's no specific... http://www.ideablade.com/forum/forum_posts.asp?TID=2526&PID=10052#10052 Author: sbelini
Subject: 2526
Posted: 24-Feb-2011 at 12:53am

Hi Vijaya,

There's no specific method to accomplish that, but you could create one using reflection:
 
public Entity RetrieveEntity(Entity entity, EntityVersion version) {
  var entityType = entity.GetType();
  var resultEntity = Activator.CreateInstance(entityType);
  foreach (var entityProperty in EntityProperty.GetEntityProperties(entityType)) {
    if (entityProperty.GetType().Name.Contains(typeof(DataEntityProperty).Name)) {
      var value = ((DataEntityProperty)entityProperty).GetValue(entity, version);
      TypeDescriptor.GetProperties(resultEntity)[entityProperty.Name].SetValue(resultEntity, value);
    }
  }
  return (Entity)resultEntity;
}
 
However, note that the retrieved entity with the original or current values is a Detached entity with the same Id as the Entity you are trying to retrieve values from. (i.e. you shouldn't be trying to attach it to the EM)
 
Can you explain why you are trying to get the whole entity rather than the properties? Are trying to "roll back" the entity? (if that's the case the above wouldn't be the correct approach)
 
Please provide details on what you are trying to do, so I can better understand your issue and help you.
 
Silvio.
]]> Thu, 24 Feb 2011 00:53:18 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2526&PID=10052#10052 getting an Entity Original and Current Versions : Hello, I know that we can find... http://www.ideablade.com/forum/forum_posts.asp?TID=2526&PID=10030#10030 Author: vijayaleads
Subject: 2526
Posted: 22-Feb-2011 at 1:19pm

Hello,

I know that we can find the Current and Original values of a property in an Entity using the GetValue method
For Example if my Entity is an Address with properties First Line,ZipCode and State

i can write something like

Address.PropertyMetaData.ZipCode.GetValue(address,EntityVersion.Current) and Address.PropertyMetaData.ZipCode.GetValue(address,EntityVersion.Original) to get the current and original ZipCode

But what I want to find out is if there is a way to get the Original and Current values of the Entity (Address) instead of a property?

Thanks for the help,
Vijaya



Edited by vijayaleads - 22-Feb-2011 at 1:21pm]]> Tue, 22 Feb 2011 13:19:57 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2526&PID=10030#10030