Check if no error then only show one field

[rrhirani]

I have 3 Column fields in the form. A, B and C.

I need to show C field if And B has valid value means no error message for A and B.

AND(ISNOTBLANK(A), ISNOTBLANK(B)) will not work in my case because I have customized valid if for both A and B. It’s not only blank check but entered value I am checking with DB also. There are many conditional expressions for both A and B so for field C, I do not want to combine it and write again for C.

I need expression like, AND(ISVALID(A), ISVALID(B))

So it will be good if I can just check if A has valid value and B has valid value then show field C.

Any suggestions would be great.