Formats the account name based on the supplied parameters for provider and user.
|FormatAccountName(String)||Retrieves a concatenated string containing the provider and user values in order, separated by a colon (":"). This method retrieves the concatenated string based only on the user name.|
|FormatAccountName(String, String)||Validates the provider and user string values. If these strings are valid, this method concatenates the provider and user values in order, with a colon (":") between them, and returns the concatenated string.|