Adding two text box to sum text box

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VB

VB12

Hello,

Can someone help me adding two text box without clicking a button.
example:

textbox1 = (1)
textbox2 =(50)
textboxsum = (51) <--- automated sum from textbox1 and textbox2

i have already values on textbox1 and textbox2, I want the two values of textbox automatically computed on textboxsum.

textbox1 and text2 values came from my database.



thanks in advance

What I have tried:

Note:
textchange event works but i need to manually input the values on text box in order to get the sum.