Expression Trees

/* Basic equals expression */

//Line by line
ParameterExpression pe = Expression.Parameter(typeof(Object), "x");
Expression left = Expression.Property(pe, typeof(Object).GetProperty("PropertyName"));
Expression right = Expression.Constant("value");
Expression expression = Expression.Equal(left, right);
var lambda = Expression.Lambda<Func<Object, bool>>(expression, pe);

// Short hand
  var param = Expression.Parameter(typeof(Object), "x");
  var exp = Expression.Lambda<Func<Object, bool>>(
      Expression.Equal(
          Expression.Property(param, "PropertyName"),
          Expression.Constant("value")
      ),
      param
  );