public override bool FileExists(string virtualPath)
{
if (IsPathVirtual(virtualPath))
{
SampleVirtualFile file = (SampleVirtualFile)GetFile(virtualPath);
return(file.Exists);
}
else
{
return(Previous.FileExists(virtualPath));
}
}
protected void GetData()
{
DataSet ds = spp.GetVirtualData();
// Clean up the path to match data in resource file.
string path = VirtualPath.Replace(HostingEnvironment.ApplicationVirtualPath, "");
path = path.TrimEnd('/');
// Get the virtual directory from the resource table.
DataTable dirs = ds.Tables["resource"];
DataRow[] rows = dirs.Select(
String.Format("(name = '{0}') AND (type='dir')", path));
// If the select returned a row, the directory exists.
if (rows.Length > 0)
{
exists = true;
// Get children from the resource table.
// This technique works for small numbers of virtual resources.
// Sites with moderate to large numbers of virtual
// resources should choose a method that consumes fewer
// computer resources.
DataRow[] childRows = dirs.Select(
String.Format("parentPath = '{0}'", path));
foreach (DataRow childRow in childRows)
{
string childPath = (string)childRow["path"];
if (childRow["type"].ToString() == "dir")
{
SampleVirtualDirectory svd = new SampleVirtualDirectory(childPath, spp);
children.Add(svd);
directories.Add(svd);
}
else
{
SampleVirtualFile svf = new SampleVirtualFile(childPath, spp);
children.Add(svf);
files.Add(svf);
}
}
}
}