How Build Lambda Expression Tree with multiple conditions

Question

Note: I know it's much simple to create this using dynamic linq but I want to learn.

I want to create a lambda that "finds": Name=David AND Age=10.

 class Person     {        public int Age { get; set; }        public string Name { get; set; }     }      var lambda = LabmdaExpression<Person>("Name", "David", "Age", 10);  static Expression<Func<T, bool>> LabmdaExpression<T>(string property1, string value1, string property2, int value2) {       ParameterExpression parameterExpression = Expression.Parameter(typeof(Person), "o");      MemberExpression memberExpression1 = Expression.PropertyOrField(parameterExpression, property1);      MemberExpression memberExpression2 = Expression.PropertyOrField(parameterExpression, property2);       ConstantExpression valueExpression1 = Expression.Constant(value1, typeof(string));      ConstantExpression valueExpression2 = Expression.Constant(value2, typeof(int));       BinaryExpression binaryExpression1 = Expression.Equal(memberExpression1, valueExpression1);      BinaryExpression binaryExpression2 = Expression.Equal(memberExpression2, valueExpression2);       var ret1 =   Expression.Lambda<Func<T, bool>>(binaryExpression1, parameterExpression);      var ret2 =   Expression.Lambda<Func<T, bool>>(binaryExpression2, parameterExpression);      } 

Answer 1

Expression andExpression = Expression.AndAlso(binaryExpression1, binaryExpression2);  return Expression.Lambda<Func<T, bool>>(andExpression , parameterExpression); 

Edit - comment

You just chain together all your expresions

so in order to get this expression X AND (Y OR (Z OR Q))

Expression ZorQ = Expression.OrElse(zExp, qExp); Expression YorZorQ = Expression.OrElse(yExp, ZorQ); Expression XandYorZorQ = Expression.AndAlso(xExp, YorZorQ);