private Expression<Func<PageElement, bool>> ActiveLanguageCheck(byte lang) {<br /> return pe => pe.PageElementLanguages.Where(<br /> y => y.Active).Select(y => y.LanguageId).Contains(lang);<br /> }

public static Expression<Func<T1, TResult>> ToSimpleFunc<T1, T2, TResult>(Expression<Func<T1, T2, TResult>> f, T2 value)<br /> {<br /> var invokeExpression = Expression.Invoke(f, f.Parameters[0], Expression.Constant(value));<br /> return Expression.Lambda<Func<T1, TResult>>(invokeExpression, f.Parameters[0]);<br /> }