public static DirectoryEntry CreateIsapiFilter(string parent, string localPath, string filterName, out bool created)
{
created = false;
DirectoryEntry directoryEntry = null;
DirectoryEntry result;
try
{
bool flag;
using (DirectoryEntry directoryEntry2 = IisUtility.FindOrCreateWebObject(parent, "Filters", "IIsFilters", out flag))
{
if (flag)
{
directoryEntry2.CommitChanges();
IisUtility.CommitMetabaseChanges(IisUtility.ServerFromWebSite(IisUtility.WebSiteFromMetabasePath(directoryEntry2.Path)));
}
directoryEntry = IisUtility.FindOrCreateWebObject(directoryEntry2.Path, filterName, "IIsFilter", out flag);
if (flag || (directoryEntry.Properties["FilterPath"].Value is string && (string)directoryEntry.Properties["FilterPath"].Value != localPath))
{
directoryEntry.Properties["FilterPath"].Value = localPath;
flag = true;
}
string text = (string)directoryEntry2.Properties["FilterLoadOrder"].Value;
if (text == null || text.Length == 0)
{
directoryEntry2.Properties["FilterLoadOrder"].Value = filterName;
}
else if (!IsapiFilter.IsFilterInLoadOrder(text, filterName))
{
StringBuilder stringBuilder = new StringBuilder(text);
stringBuilder.Append(",");
stringBuilder.Append(filterName);
directoryEntry2.Properties["FilterLoadOrder"].Value = stringBuilder.ToString();
}
directoryEntry2.CommitChanges();
IisUtility.CommitMetabaseChanges(IisUtility.ServerFromWebSite(IisUtility.WebSiteFromMetabasePath(directoryEntry2.Path)));
created = flag;
result = directoryEntry;
}
}
catch (Exception)
{
if (directoryEntry != null)
{
directoryEntry.Close();
}
throw;
}
return(result);
}