Concatenation is allowed using Boolean AND, OR, and NOT operators. You can use parentheses to group clauses and force precedence. The AND operator has precedence over other operators. For example:
(LastName = 'Smith' OR LastName = 'Jones') AND FirstName = 'John'
When you create comparison expressions, the following operators are allowed:
<
>
<=
>=
<>
=
IN
LIKE
The following arithmetic operators are also supported in expressions:
+ (addition)
- (subtraction)
* (multiplication)
/ (division)
% (modulus)
For more details visit below link
https://docs.microsoft.com/en-us/dotnet/api/system.data.datacolumn.expression?view=net-6.0