wpf error: in main dispatcher routine

Question

when i use datagrid in the WPF, and add a new row, when i input the data to cells,

sometime i will get an exceptio like :

Error in main dispatcher routine:Exception message :Recursive call to Automation Peer API is not valid.

Stack trace:

Metho:GetChildren;File;Line:0

.....

.....

谁遇到过这种问题？