linq expression in vb.net

Posted by Thurein on Stack Overflow See other posts from Stack Overflow or by Thurein
Published on 2010-05-11T03:21:37Z Indexed on 2010/05/11 3:24 UTC
Read the original article Hit count: 305

Filed under:
|

Hi,

Can any body translate the following c# code to vb. I have tried telarik code converter but I got problem at expression.call and it won't compile at all.

private static IOrderedQueryable<T> OrderingHelper<T>(IQueryable<T> source, string propertyName, bool descending, bool anotherLevel)
{
    ParameterExpression param = Expression.Parameter(typeof(T), string.Empty);
    MemberExpression property = Expression.PropertyOrField(param, propertyName);
    LambdaExpression sort = Expression.Lambda(property, param);

    MethodCallExpression call = Expression.Call(    
        typeof(Queryable),
        (!anotherLevel ? "OrderBy" : "ThenBy") + (descending ? "Descending" : string.Empty),
        new[] { typeof(T), property.Type }, // error line
        source.Expression,
        Expression.Quote(sort));

    return (IOrderedQueryable<T>)source.Provider.CreateQuery<T>(call);
}

thanks Thurein

© Stack Overflow or respective owner

Related posts about LINQ

Related posts about lambda-expressions