How to update tree node values by using update button

Question

In my project am I using update button for edit and save the values of tree node. Here I can edit and save the values of tree node. after click the node in tree view that data was not shown. Here I can move to another child node and then click the updated node then only it will showing the data. I want to view that updated data after click on the update button . How can I do this please help me. 

 

 

Thanks in advance.