I have a stored proc that returns the result of a JOIN from a SQL Server database. The data represents products and parts. It's possible to have one or many products returned, and all the parts that correspond to each product. So it will either be a many to many, or a one to many.

Once the data is in ADO, I want to be able to determine of I got back more than one product. So far I have to following code, but to me it seems rather inefficient:

bool bMultiProductDS = false;

// Get the first prod number
string sFirstProductNumber = dsResults.Tables[0].Rows[0]["Product_Number"].ToString().ToLower();

// Define a variable to hold subsequent product numbers
string sNextProductNumber = "";

// Define a row counter
int iRow = 0;

// Loop once for each row in the firs table
foreach(DataRow oRow in dsResults.Tables[0].Rows)
{
    // Skip the first row
    if (iRow == 0)
    {
        iRow++;
        continue;
    }

    // Get the next product number
    sNextProductNumber = oRow["Product_Number"].ToString().ToLower();

    if (sFirstProductNumber != sNextProductNumber) ;
    {
        bMultiProductDS = true;
        break;
    }
}