OleDbConnection conn = comm.Connection;
conn.Open();
DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
conn.Close();
OleDbConnection conn = comm.Connection;
conn.Open();
DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
conn.Close();