Using Telerik version 2011.3.1115.35, facing a problem when using DBContentProvider.cs, thats is
RadEditor1.ImageManager.ContentProviderTypeName = typeof(DBContentProvider).AssemblyQualifiedName;

On debug found that ResolveRootDirectoryAsTree is calling multiple times and files are not populating in ImageDailog list for ViewPaths = "Root", however returnValue contains the list of retreived files already uploaded.
Note:in old version same code working for IE8 in compatibility mode.

public override DirectoryItem ResolveRootDirectoryAsTree(string path)
{
      DirectoryItem returnValue =
                    new DirectoryItem(GetName(path), GetDirectoryPath(path), string.Empty, string.Empty, fullPermissions, GetChildFiles(path),
                    GetChildDirectories(path));
              
      return returnValue;
}

Why ImageDialog not showing the files and upload button also remains disabled

Hi Syed,

Could you please verify that you are using the DBContentProvider from this code library?

The provided code snippet differs a bit from the code of the of the content provider from the code library's one. Could you please check if fullPermissions contains PathPermissions.Read?

Regards,
Dobromir
the Telerik team