Question

1. I have SQL Server 2000, it doesn’t support MultipleActiveResults.
2. I have to do multiple inserts, and it’s done with one connection per insertion.
3. I want to begin a transaction before all insertions and finish it after all insertions.
4. How do I do it?

Answer 1

What is the reason you don’t use one connection and multiple commands (actually one command recreated in loop)? Maybe this solution will work for you:

public static void CommandExecNonQuery(SqlCommand cmd, string query, SqlParameter[] prms) {     cmd.CommandText = query;     cmd.Parameters.AddRange(prms);     cmd.ExecuteNonQuery();     cmd.Parameters.Clear(); }  static void Main(string[] args) {     string insertQuery =          @"INSERT TESTTABLE (COLUMN1, COLUMN2) " +              "VALUES(@ParamCol1, @ParamCol2)";     using (SqlConnection connection = new SqlConnection(connectionString))     {         using (SqlCommand command = connection.CreateCommand())         {             SqlTransaction transaction = null;             try             {                 // BeginTransaction() Requires Open Connection                 connection.Open();                  transaction = connection.BeginTransaction();                  // Assign Transaction to Command                 command.Transaction = transaction;                 for (int i = 0; i < 100; i++)                     CommandExecNonQuery(command, insertQuery,                          new SqlParameter[] {                          new SqlParameter("@ParamCol1", i),                          new SqlParameter("@ParamCol2", i.ToString()) });                 transaction.Commit();             }             catch             {                 transaction.Rollback();                 throw;             }             finally             {                 connection.Close();             }         }     } } 

Also see
Sql Server Transactions – ADO.NET 2.0 – Commit and Rollback – Using Statement – IDisposable