Mr. AIS4U
Thanx for your response, but as you told me that you try it on your screen. I also tried it like you did, it is working fine. But i'm saving data in MS Access Database.
I think you did'nt try it, please just press Enter key (keyascii=13) in text box 2 or 1 and look at the result. on key press event it simply added the same value which is already in textbox 1 or 2 into the result.
It was my typing mistake, i have textbox3.text instead of textresult.text..
help, plz