C#

public static System.Collections.Generic.IList<System.Collections.Generic.IList<T>>
MakeCombinations<T>
(
    params System.Collections.Generic.IEnumerable<T>[] Values
)
{
    System.Collections.Generic.List<System.Collections.Generic.IList<T>> result =
        new System.Collections.Generic.List<System.Collections.Generic.IList<T>>() ;

    if ( Values != null )
    {
        result.Add ( new System.Collections.Generic.List<T>().AsReadOnly() ) ;

        for ( int i = Values.Length - 1 ; i >= 0 ; i-- )
        {
            if ( Values [ i ] != null )
            {
                System.Collections.Generic.List<System.Collections.Generic.IList<T>> temp =
                    new System.Collections.Generic.List<System.Collections.Generic.IList<T>>() ;

                foreach ( T t in Values [ i ] )
                {
                    foreach ( System.Collections.Generic.IList<T> many in result )
                    {
                        System.Collections.Generic.List<T> one =
                            new System.Collections.Generic.List<T>() ;

                        one.Add ( t ) ;

                        one.AddRange ( many ) ;

                        temp.Add ( one.AsReadOnly() ) ;
                    }
                }

                if ( temp.Count > 0 )
                {
                    result = temp ;
                }
            }
        }
    }

    return ( result.AsReadOnly() ) ;
}

System.Collections.Generic.IList<System.Collections.Generic.IList<string>> c =
MakeCombinations
(
    new string[] { "Blonde" , "Brunette" , "Redhead" , "Black" }
,
    new string[] { "Blue" , "Brown" , "Green" }
,
    new string[] { "A" , "B" , "C" , "D" , "DD" , "DDD" }
) ;

jbradshaw wrote:

One we came up with was to convert the document to jpgs, one page per image, and then scroll through them. This works but the library I looked at (http://www.aspose.com/) is slow (about 2 seconds a page).

igalep132 wrote:

now it stucks when the event rises

dataGridView3.Invoke(new MethodInvoker(delegate
                    {
                        dataGridView3.Rows.Add((object[])s);
                    }));

igalep132 wrote:

the whole application freezes.

igalep132 wrote:

i'll be glad to learn

igalep132 wrote:

what exactly i need to look for ?

igalep132 wrote:

what was wrong with the invoker ?

dataGridView2.Invoke(new MethodInvoker(delegate
    {
        dataGridView2.Rows.Add((object[])s);
    }));

dataGridView2.InvokeRequired
dataGridView2.Invoke

this.InvokeRequired
this.Invoke

this.InvokeRequired<br />
this.Invoke