protected void lbnDeleteVersions_Click(object sender, EventArgs e)
{
FileController fileCtrl = new FileController();
foreach (GridViewRow row in gridVersions.Rows)
{
CheckBox chkSelect = (CheckBox)row.FindControl("chkSelect");
if (chkSelect.Checked == false)
continue;
File file = fileCtrl.Get(Int32.Parse(row.Cells[0].Text));
if (file != null)
{
//check if at least one version exists
FileController ctrl = new FileController();
List<File> parentFileVersions = ctrl.GetVersions(file.ParentID, UserId, PortalId, PortalSettings.AdministratorRoleId, "");
if (parentFileVersions.Count > 1)
{
//2 or more versions exist, delete version
FileConfigurationController configCtrl = new FileConfigurationController();
List<FileConfiguration> configs = configCtrl.GetItems(PortalId) as List<FileConfiguration>;
fileCtrl.DeleteVersion(file, configs[0].FilesLocation);
}
else
{
//1 or fewer versions exist, do not delete and show error message
ShowUserErrorMessage("Can't delete last version. At least one version of the file must exist.");
}
}
}
BindVersions(fileCtrl.Get(Int32.Parse(this.Request.QueryString["ID"])));
}