net-core(DynamicExpresso.Core)

==============================（Install - Package DynamicExpresso.Core）======================================

var whereExpression = $"m.{queryField}==\"{queryValue}\"";

string whereExpression = "customer.Age > 18 && customer.Gender == 'F'";

var interpreter = new Interpreter();
Func<Customer, bool> dynamicWhere = interpreter.ParseAsDelegate<Func<Customer, bool>>(whereExpression, "customer");

Assert.AreEqual(1, customers.Where(dynamicWhere).Count());

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string whereExpression = "customer.Age > 18 && customer.Gender == 'F'";

var interpreter = new Interpreter();
Expression<Func<Customer, bool>> expression = interpreter.ParseAsExpression<Func<Customer, bool>>(whereExpression, "customer");

Assert.AreEqual(1, customers.Where(expression).Count());

可以通过这个包直接构建表达式树。