If invoke the method save of ViewMode<T>, the UI will rebind to the BO. if the T is BLB , i don't want the user to find the new or just edited row after click the save button.
but i override the method Save as below:
public override void Save(object sender, ExecuteEventArgs e)
but the UI can't refresh. and continue to add new row and click save, will popup a error:Edit level mismatch in AcceptChanges
how can i do?
You must remember that the save operation returns a new object. This is why the rebind occurs - because there's a whole new object to which the UI must bind.
There are a couple options. One is to use a dynamic list, so each individual row is saved as the user leaves the row. Another is to use a diffgram technique to save the changed data, without moving the object graph to the app server and back (theres a sample in the Samples download that demonstrates this).
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