Programmatically searching files and folders inside specified Document Library

By request I'm developing a custom WebPart where it's possible for the user to search files and folders inside a document library, i made a GridView to list the files (working ok I'm not searching), a TextBox for input and a button.

My document library structure is something like this:

• Document Library
  • Child Folder 1
  • Child Folder 2
    • Grand Child Folder
    • Image.jpg

When using the search I created, I type the name 'Image'. But it always returns nothing (SPListItemCollection.count is always 0).

For the search, i'm using the following code:

SPQuery query = new SPQuery(); query.ViewAttributes = "Scope='RecursiveAll'"; String caml = @"<Where> <Contains> <FieldRef Name='Title' /> <Value Type='Text'>{0}</Value> </Contains> </Where> <OrderBy> <FileRef Name='ID' Ascending='True' /> </OrderBy>"; query.Query = String.Format(caml, "Image"); SPListItemCollection resultGetItems = list.GetItems(query); 

Anyone can help me with this one? i can't seem to get it working.

Thanks a lot.