Am I missing something about LINQ?

Question

I seem to be missing something about LINQ. To me, it looks like it\'s taking some of the elements of SQL that I like the least and moving them into the C# language and usin

Answer 1

Before:

// Init Movie
m_ImageArray = new Image[K_NB_IMAGE];

Stream l_ImageStream = null;
Bitmap l_Bitmap = null;

// get a reference to the current assembly
Assembly l_Assembly = Assembly.GetExecutingAssembly();

// get a list of resource names from the manifest
string[] l_ResourceName = l_Assembly.GetManifestResourceNames();

foreach (string l_Str in l_ResourceName)
{
    if (l_Str.EndsWith(".png"))
    {
        // attach to stream to the resource in the manifest
        l_ImageStream = l_Assembly.GetManifestResourceStream(l_Str);
        if (!(null == l_ImageStream))
        {
            // create a new bitmap from this stream and 
            // add it to the arraylist
            l_Bitmap = Bitmap.FromStream(l_ImageStream) as Bitmap;
            if (!(null == l_Bitmap))
            {
                int l_Index = Convert.ToInt32(l_Str.Substring(l_Str.Length - 6, 2));
                l_Index -= 1;
                if (l_Index < 0) l_Index = 0;
                if (l_Index > K_NB_IMAGE) l_Index = K_NB_IMAGE;
                m_ImageArray[l_Index] = l_Bitmap;
            }
            l_Bitmap = null;
            l_ImageStream.Close();
            l_ImageStream = null;
        } // if
    } // if
} // foreach

After:

Assembly l_Assembly = Assembly.GetExecutingAssembly();

//Linq is the tops
m_ImageList = l_Assembly.GetManifestResourceNames()
    .Where(a => a.EndsWith(".png"))
    .OrderBy(b => b)
    .Select(c => l_Assembly.GetManifestResourceStream(c))
    .Where(d => d != null)  //ImageStream not null
    .Select(e => Bitmap.FromStream(e))
    .Where(f => f != null)  //Bitmap not null
    .ToList();

Or, alternatively (query syntax):

Assembly l_Assembly = Assembly.GetExecutingAssembly();

//Linq is the tops
m_ImageList = (
    from resource in l_Assembly.GetManifestResourceNames()
    where resource.EndsWith(".png")
    orderby resource
    let imageStream = l_Assembly.GetManifestResourceStream(resource)
    where imageStream != null
    let bitmap = Bitmap.FromStream(imageStream)
    where bitmap != null)
    .ToList();