Instantiating a StringBuilder won't take that much time. There is ReadAhead option available on Windows 8, but I don't see any way to know if there is more data.

>Hi everybody,
>
>I know that NextResult() method of the SqlDataReader will get next result. However, is there a way to find out if SqlDataReader has multiple results or not?
>
>In particular, I have the following code
>
>

> StringBuilder result = new StringBuilder(returnMessage);
>
>               while (sqlDataReader.NextResult())
>               {
>                  result.AppendFormat("\r\n{0}", GetFormattedReturn(sqlDataReader, returnType, out recordCount));
>               }
>               returnMessage = result.ToString();

>
>However, there is no need to create a new instance of the StringBuilder if the reader has only a single result set. I did a very quick google search and didn't find a way to find out by some property if the reader has multiple results.
>
>Do you know if there is such a property or there is another way to handle the above efficiently?
>
>Thanks in advance.