How to handle multiple ResultSets, each with multiple Rows? IDataReader.NextResult() ending Read()

Question

How to handle multiple ResultSets, each with multiple Rows? The call to NextResult() breaks the while loop.

Some of my SPs return multiple ResultSets. I

Answer 1

You need to create two nested loops.

• The outer loop should iterate over result sets and should have NextResult at the end
• The inner loop should iterate over rows in a result set and should have Read at the beginning.

Something like:

using (IDataReader reader = ...) { 
  // Process all result sets
  do {
    // Process all elements in the current result set
    while (reader.Read()) { 
      ArrayList row = new ArrayList(); 
      for (int j = 0; j < reader.FieldCount; ++j) { 
        object rowValue = reader.GetValue(j); 
        row.Add(rowValue); 
      } 
      // TODO: Do something with 'row'
    }
  } while (reader.NextResult())
}