Sir
I want to know about the codes to create a scientific calculator in vb.net with examples

Can you please give us a list of operation you would like us to produce answers for.

Here are some simple things.

Roots (Square root of 4) can be written as powers:

EXAMPLES (The Carat [^] is the Shift of 6. It simply means the following number is index of the previous number)

SQRT(4) = 4 ^ 1/2 = 2
3rdRT(8) = 8 ^ 1/3 = 2
4thRT(8) = 16 ^ 1/4 = 2

There is also a Math.SQRT function I think.

Sins, Cos, Tans can be found in Math.Sin()/Cos()/Tan()