/// <summary>
/// Maintain sort on data source and rebind.
/// </summary>
/// <param name="direction">The direction of the sort.</param>
private void SortGridView(String direction)
{
// Get current data source as datatable and define a view.
DataTable dt = HList.ToDataTable <Blob>(this.BlobFileList);
DataView dv = new DataView(dt);
if (!String.IsNullOrEmpty(this.GridViewSortExpression))
{
// If necessary, sort data source based on sort expression.
dv.Sort = this.GridViewSortExpression + direction;
}
// Rebind file list.
this.gvUploads.DataSource = dv;
this.gvUploads.DataBind();
}