private void AddIdentity(string name, string version, string hintPath) { if (name.Length == 0) { throw new AddInLoadException("Identity needs a name"); } foreach (char c in name) { if (!char.IsLetterOrDigit(c) && c != '.' && c != '_') { throw new AddInLoadException("Identity name contains invalid character: '" + c + "'"); } } Version v = AddInReference.ParseVersion(version, hintPath); if (primaryVersion == null) { primaryVersion = v; } if (primaryIdentity == null) { primaryIdentity = name; } identities.Add(name, v); }