Question

i am updating a sql server 2008 database using c# like this:

foreach (DataRow row in dt.Rows)
{
    faxstatus = row.ItemArray[5].ToString().Contains("0000") ? "Faxed" : "Error";

    query = 
        @"update FileLog set
        FaxStatus=" + "'" + faxstatus + "'," +
        "FaxedPageCount=" + "'" + row.ItemArray[1] + "'," +
        "dtFaxed=" + "'" + row.ItemArray[2] + "'," +
        "BiscomCode=" + "'" + row.ItemArray[5] + "', " +
        "RetryCount=" + "'" + row.ItemArray[4] + "' " +
        "where CONVERT(VARCHAR(255), JobID) =" + "'" + row.ItemArray[3] + "'" +
        " and FaxStatus<>'Faxed'";

    command = new SqlCommand(query, myConnection);
    command.ExecuteNonQuery();
    NumberOfRecordsUpdated++;

}

i would like to know whether it is possible to return how many records were updated?

Answer 1

Capture and use the result of ExecuteNonQuery to an integer. That method returns the number of records affected by the operation.

See SqlCommand.ExecuteNonQuery Method.

That being said, how much do you trust your datasource? Enough to bet your data integrity on it? I’d be remissed if I didn’t implore you to explore parameterized queries. A using statement would also be warranted so that your disposable resources (SqlConnection, SqlCommand, etc.) are properly dealt with.