private void InitializeProviders() { providers = new List <ActiveDirectoryMembershipProvider>(); StringBuilder strBuilder = new StringBuilder(); for (int i = 0; i < connectionStrings.Length; ++i) { string currentStr = connectionStrings[i].Trim(); ActiveDirectoryMembershipProvider provider = new ActiveDirectoryMembershipProvider(); try { NameValueCollection currConfig = new NameValueCollection(config); currConfig["connectionStringName"] = currentStr; provider.Initialize(strProviderName, currConfig); providers.Add(provider); } catch (Exception e) { strBuilder.Append(currentStr + ": " + e.Message + "\n"); if ((i == connectionStrings.Length - 1) && (providers.Count == 0)) { throw new Exception(strBuilder.ToString(), e); } } } }